Archive for the ‘Rodways Repco Recollections’ Category

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An Australian daily broadsheet newspaper ad to promote Repco’s 1967 Grand Prix successes…

Thats Michael Gasking giving the 1967 F1 RB740 V8 ‘a tug’ on the Maidstone, Melbourne dyno before shipping the usually still warm engine off to the Brabham Racing Organisation in Guildford, England.

Credit…

Michael Gasking Collection

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The Story of the Repco-Brabham V8 Racing Engine as conveyed in Repco Technical News Volume 12 No 2, November 1965…

This gem is from Michael Gasking’s Collection and is reproduced in all of its glory, this is the 1966 Tasman/F1 engine later more commonly referred to as ‘RB620’, its internal Repco Parts Co project code was ‘620’. It will be difficult to read on your ‘phone, a bit easier on a larger device!

We have covered this engine already in primotipo, click on the links at the end of the article for these stories. Just a couple of ‘editorial comments’ or observations.

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RB620 and F1…

No mention is made of the engines F1 application so late in the piece, the new 3 litre F1 began on 1 January 1966. Brabham and Repco were playing their cards, understandably, close to their chest. Remember the RB620 V8 first ran in a car at 3 litres not 2.5, at Goodwood before racing in the non-championship South African GP, at Kyalami on 1 January 1966.

Melbourne motoring journalist Chris de Fraga, well known and respected by generations of Victorian enthusiasts is credited with first reporting Repco’s F1 plans in the Melbourne ‘Age’ in early October 1965, a report denied by Repco at the time. This document dated November 1965 was presumably circulated in that month or the following one.

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Jack’s Lovechild…

Brabham’s parentage of the project is ignored in this largely technical treatise of the engine, Jack’s involvement not ‘front and centre’ in this public document given the need for F1 confidentiality.

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‘The Men’…

The duo credited with the engine in the brochure are Chief Engineer of the Repco Parts Group, Frank Hallam and Project Engineer Phil Irving, the only guy missing, as stated above is Brabham. Its worth musing for a bit about the roles these three men played in the championship winning RB620.

In simple terms Jack was the engines conceptual designer- he pitched the Repco board a simple engine using the F85 Olds block as a base whose completed dimensions were to fit the existing BT19 chassis. Phil designed it, inclusive of its drawings. Jack provided both conceptual design and practical feedback to Phil on regular visits to Irving who was based near Brabhams early in 1964 as he progressed the engines design. All of the ‘RB620’ drawings were done by Phil and signed by him according to ex-Repco engineer and Repco Historian, Nigel Tait who has seen and reviewed them all in the process of archiving them with RMIT University, Melbourne, in recent years. Hallam was Repco Brabham Engines Pty. Ltd. General Manager and Chief Engineer. His role was primarily a management one although he had engineering oversight, his direct design and engineering input into RB620 something Hallam has sought to grab a greater share of down the decades.

After Irving’s death, Hallam in his book ‘Mr Repco Brabham’ comprehensively dumps all over Irving and seeks to take more credit than he is due for the ‘RB620’ engine inclusive of positioning Irving as its ‘draftsman’ – ‘draftsman casual’ in the employee list in his books Appendix. In fact all of the ‘Drawing Office Personnel’ listed are described as ‘draftsman’ despite several being degree qualified engineers. Hallam, on the other hand, formally qualified as a motor mechanic, lists himself as General Manager/Chief Engineer. The positioning he inaccurately seeks to convey is clear. In that context its interesting to see Phil’s title as ‘Project Engineer’ in this Repco publication of the day.

The very well known F1 engine designer and manufacturer John Judd joined the Repco Brabham Engines Maidstone design team at Jack Brabham’s behest in 1966. He pretty much unwittingly walked into a storm in terms of the final breakdown in the progressively declining working relationship between Hallam and Irving. Judds arrival at Maidstone was unannounced by Frank to Phil, the design leader at the time, thereby lighting the fuse for a final confrontation which was becoming increasingly inevitable.

Judd got the ‘rounds of the kitchen’ from Phil when he joined RBE according to both Phil’s autobiography and Frank’s book but Judd has this to say about Irving’s contribution to ‘RB620’ in a recent ‘Vintage Racecar’ magazine interview;

‘When Jack returned (to the UK) from the (1966) Tasman  series, he asked if I could go to Melbourne almost immediately, and work with Repco designing parts toward the next year’s engine. That lasted for about four months and I was back again for six months in 1967 working on the 1968 4-cam engine.’

‘The original 1966 engine had been designed almost 100% by Phil Irving of Velocette and HRD fame with input from Jack and Ron Tauranac, but Phil didn’t fit in well with the Repco corporate structure and fell out with his boss Frank Hallam. My insertion into an already fragile situation led to Phil leaving after I had been there two months or so, and to his replacement by Norm Wilson. Looking back at Jack’s 1966 World Championship winning engine, I believe it was largely the product of one man, Phil Irving, to an extent that is and will remain unique.’

Don’t get me wrong, Hallam played a vastly important role in marshalling Repco corporate resources to assemble the men and modern machines to build World Championship winning engines in 1966 and 1967. He was also a wonderful foil between the demanding requirements of the Repco Board and the daily dramas in Maidstone of building and servicing racing V8 engines so far from Brabham Racing Organisation’s Guildford base. But his contribution is more management than engineering detail of RB620 when objectively looked at in the context of all the published evidence and the views of those there at the time.

The antipathy between Irving and Hallam was and is well known, few Repco people want to go ‘on record’ about the topic, which is both understandable and frustrating at the same time. They, rightfully, recognise the contributions of both men. Irving’s book is respectful of Hallam, Hallam’s of Irving not so and was published well after Phil’s death- the shit-canning of Irving is grubby and un-Australian really. If you are going to ‘have a crack’ do so when the other dude can defend himself. Hallam’s book was contracted by him from Simon Pinder, the author. It is not objective as such (neither is Irving’s autobiography of course) but does add much to fill in the RBE story, the long interview with ’67 RB740 designer Norman Wilson is gold for example,  but the books quality varies from gold to ‘merde’ depending upon the chapter. One needs quite a lot of Repco knowledge to pick the chapters to treasure and those to treat with rather more circumspection.

Nigel Tait told me that Jack Brabham was very angry with a fair bit of the contents of the book- it would have been a good idea for the great man to have read its contents before writing the publications foreword! I will explore the relationship between Irving and Hallam, and Hallam’s claims, in detail, soon. In short, this Repco corporate piece puffs up Hallam’s racing background and downplays Irving’s, ‘twould be interesting to know who ‘signed off’ the content of this document before it’s publication.

Enjoy ‘The Story of The Repco-Brabham V8 Racing Engine’, its sensational. Wish I had it when Rodway Wolfe and I tackled the articles linked below 2 years ago!, having said that we have included a good bit of granular stuff not included in this official publication, so read together are not a bad crack at the ‘RB620’ subject…

Bibliography…

Repco, ‘Vintage Racecar’ magazine, ‘Mr Repco Brabham’ Simon Pinder

Credits…

Michael Gasking Collection

Tailpiece: Repco Brabham Boys, Longford, March 1966…

Phil Irving, with collar and tie chats to Brabham whilst Frank Hallam at right susses the Brabham BT19’s suspension. Not sure what Roy Billington is up to. Note the long inlet trumpets of the Tasman 2.5 RBE620 V8. Its the engines 3rd race, South African GP then Sandown Tasman the week before Longford. Jack was 3rd with overheating and low fuel, Jackie Stewart won in a BRM P261 from Graham Hill’s sister BRM. Its 6 or 7 March 1966. BT19 was Jack’s F1 championship winning 1966 car, still in Oz owned by Repco (oldracephotos.com/Harold Ellis)

 

 

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Melbourne’s finest trying to keep enthusiastic shoppers under control out front of ‘Georges’, Collins Street in 1965…

The car is, I think, Bib Stillwell’s Brabham BT11A Climax. The occasion some type of promotion between Georges luxury department store and Repco or Bib Stillwell Holden. Stillwells switched from Holden to Ford in 1966 before all you Melburnians correct me, clearly the crowds are fascinated by the presence of a ‘Grand Prix’ car in Melbourne’s busiest and most up-market shopping strip.

For over a century Georges was the place the ‘great and the good shopped’, an incredibly conservative joint, its intriguing to speculate just what the promotion may have been, automotive products are not at all what Georges stocked! String-backed gloves maybe and flat-caps but nothing grubby or grimy at all.

I think its Bibs car. The color scheme is right, his dealership/workshop was in Kew, not far away. He usually raced wearing #6, this car carries #3 but that’s neither here nor there. For Repco, Brabhams were badged ‘Repco Brabham’ at the time and the Coventry Climax FPF engines by that stage were largely built in Richmond under licence from CC so there were good associations to Repco’s brand.

When is it?, not sure exactly. Bib raced his BT11A from the Tasman Series 1965, he took the last of his four Gold Stars in it that year and then retired, so I guess it’s 1965…

Georges, for the curious…

http://www.georgesoncollins.com.au/

Credit…

Nigel Tait, many thanks for another tid-bit from your Repco archives

 

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(Gasking/Repco)

‘Scuds’ was the nickname of David McKay’s Ferrari, Porsche and Volvo dealership on Sydney’s North Shore…

Here is the team with its Brabham BT23A Repco ‘740’ 2.5 V8 at Warwick Farm in 1967’ish. Not sure of the exact date, but it looks warm and Cusack carried #7 in the Hordern Trophy on 3 December 1967 so my tip is that weekend. He finished behind Frank Gardner’s Alec Mildren owned Brabham BT23D Alfa Tipo 33 V8, its race debut and John Harvey’s Brabham BT11A Climax.

Mind you, Cusack carried the same number in the 18 February ’68 Tasman Round won by Jim Clark’s Lotus 49 Ford DFW, Greg was out on lap 4 with brake problems. Upon a closer look, the car in the shot below, during the Tasman round does not have the green band at its noses tip, so let’s go for the shot above as pre Hordern Trophy.

From the left is the beautifully liveried Holden HR Station Wagon tow car, it’s probably toting the big 186cid 3 litre ‘six’ and ‘three on the tree’ manual tranny. Mechanic Bob Atkin, later a Director of SV, then El Supremo McKay and driver Greg Cusack. Greg was a very successful Ford dealer himself in Canberra. He was said to have been as quick as anyone on his day but ‘those days’ didn’t happen often enough! The trailer is a ‘Rice’ rated then and eagerly sought after now.

Top period shots, luvvem!

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Cusack at the Farm during the ’68 Tasman round in the SV BT23A (oldracephotos.com)

Credits…

Michael Gasking Collection/Repco, oldracephotos.com, oldracingcars.com

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Dave Charlton fettling his Brabham BT11 to which he has just bolted a ‘brand spankers’ 3 litre Repco F1 RB620 V8…

I must admit this shot as a ‘who, what, where and when’ had me tossed! I thought the face was familiar, but given it was from Nigel Tait’s Repco Photographic Archive I figured it was an RBE technician installing the little V8 into one of Jack’s Tasman cars in Melbourne. Completely wrong! The installation of engine to chassis was done in South Africa, exactly where I am intrigued to know.

But at the back of my brain I did recognise the driver although its Charlton’s Lotus 72 days which resonate with me most. This Brabham, the BT11 was a very successful ‘Intercontinental’ model in Tasman racing and in South African National Formula racing. Bought for Charlton by South African enthusiast Aldo Scribante, it was originally delivered with the ubiquitous 2.5 litre Coventry Climax FPF 4 cylinder engine.

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Charlton in the Climax engined Brabham BT11, Q8 and unclassified. Pedro Rodriguez won the race in a Cooper T81 Maserati, South African GP 1967 (Dave Kent)

Dave did the full South African season in it in 1966, not really challenging local rival John Love’s Brabham BT20 Repco. After cranking in the Repco V8 he won the ’67 Rand Autumn Trophy race. Into 1968 he raced on in the BT11, Love updated to an ex-works Lotus 49, the rivalry between the two drivers over the years intense and fair.

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1968 South African GP, Dave in Scribante’s Brabham BT11 Repco. Q14 and DNF gearbox, the race won by Jim Clark’s Lotus 49 Ford, the great Scots last GP win (Doug Brown)

Charlton was a South African citizen but was born in Yorkshire in 1936, migrating to SA with his mother in his early teens.

He first rose to prominence after winning the 1960 SA GP sportscar supporting race in an Austin Healey 100/6. He later raced an ex-Whitmore Lotus 22 in Europe without much success and returned to SA with a depleted bank balance. Some great drives in a Lotus 20 Ford twin-cam bought him to Scribante’s notice and the rest as they say is history; South African F1 champion from 1970-75, 13 championship Grands Prix appearances. He died in February 2013.

After claiming a number of wins in the Brabham over the following season Charlton upgraded to a Lotus 49C Ford taking the 1970 South African F1 title (and 12th place in the South African GP). In a renta-drive he drove a factory Brabham BT33 in the ’71 South African GP, his engine failed mid-race.

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The two great rivals in South Africa for over a decade; John Love March 701 Ford 2nd and Charlton Lotus 49C Ford 1st, Leeukop Corner, Highveld 100, 1971 Kyalami (Brian Watson)

He went to to the UK to collect a Lotus 72D, racing it in the 1972 British Grand Prix at Silverstone, in spite of losing practice time to mechanical issues he qualified 13th.  His engine dropped on to seven cylinders on the warm-up lap, but the car won him the domestic SA championship for three consecutive seasons.

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1972 British GP, Charlton leading one of the McLarens into Druids Hill, Lotus 72D Ford, DNF gearbox, the race won by Fittipaldi’s works 72D (Brian Watson)

For 1974 Charlton’s Scuderia Scribante team acquired McLaren M23/2, which Peter Revson had driven to victory in the 1973 British Grand Prix. Charlton dominated the domestic scene to a new level despite Ian Scheckter’s pace in a Lotus 72. Charlton took six wins and won a fifth consecutive championship.

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Kyalami 1972, perhaps the Highveld 100 but help welcomes from South African enthusiasts. #2 John Love Surtees TS9, #1 Charlton Lotus 72D and #3 Willie Ferguson Brbham BT33, the blue McLaren M10B Chev perhaps Kipp Ackerman (Brian Watson)

The following year Scheckter raced a Tyrrell 007 and Charlton won twice but eight podiums in a year of consistency won him the title again. He sold the M23 on to Aussie John McCormack, who converted it to Formula 5000 spec and notched up further successes in the domestic Gold Star championship, while Charlton switched to Formula Pacific and won that for four consecutive seasons.

Click here for my article on McLaren M23/2 which has some material on Charlton’s racing of that great car; https://primotipo.com/2014/07/24/macs-mclaren-peter-revson-dave-charlton-and-john-mccormacks-mclaren-m232/

Charlton died in February 2013 aged 77.

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Charlton during the 1973 South African GP @ Kyalami with his Lotus 72D all nicely balanced on the throttle (Stuart Dent)

Etcetera…

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Charlton at Kyalami in the BT11 still Climax engined in 1967 (Ken Stewart)

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Charlton this side in the BT11 Repco with John Love in his BT20 Repco in 1968 (Dave Kent)

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Carlton again in the BT11 Repco (Deon Smit)

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Paid guest drive of the works Brbham BT33, inside Denny Hulme’s McLaren M19, SA GP 1971 (Deon Smit)

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Charlton at the wheel of a factory Lotus 72, 1971 British GP (unattributed)

Credits…

Nigel Tait Collection, Repco Ltd Archive

Tailpiece: The flag drops-Luki Botha Brabham Repco, John Love Cooper Climax and on the far side Dave Charlton Brabham BT11 Repco, 1967 Coronation 100 …

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(Deon Smit)

 

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(Gasking)

Repco workshop customer point of sale ‘take-away’ from 1962/3…

Given the sophistication of todays online marketing driven by complex algorithms using the reams of data we all hand over, unknowingly, in our daily routines its interesting to look at how it was once done, and still is to an extent I guess.

This quite eye-catching piece, with its complex die cut is sophisticated for its day and was no doubt scooped up in large numbers by the trade customers who frequented the various outlets of Repco’ burgeoning global empire. Repco’s retail outlets, well known to Aussies as a weekend DIY supply destination came later.

Former Repco engineer Michael Gasking has given me access to his extensive archive to share with you, this is the first of many more interesting Repco timepieces from Michael. Many thanks to him!

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(Gasking)

It’s a few years before the Repco-Brabham ‘RB620’ V8 program but Ron and Jack’s cars were called and badged ‘Repco-Brabham’ and the technical relationship was just extending to the maintenance and parts back up of the Coventry Climax FPF engine by whom Repco were licensed to make parts.

So the link between R&D, testing and racing is well travelled but neatly done I reckon, to see and hold this marketing timepiece is a joy so I thought it worth sharing.

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Brabham’s BT4 awaits its Climax engine during the ‘1963 Internationals in Australia, at the Repco Richmond facility. Its a nice ‘reveal’ of Ron Tauranac’s spaceframe chassis of the day. BT4 is the Intercontinental variant of the 1962 F1 Coventry Cliamx FWMV V8 engined BT3 (Repco/Gasking)

Brabham chassis ‘F1-3-62’…

Inevitably my eyes were drawn to the cars chassis number. Its to the left and under the steering wheel on the dash, its with this stuff where my anal side kicks in. Wonder which car it is, thought i…

Allen Brown’s oldracingcars.com is one of my favourite bibles for such important minutae. No joy there, there was only one BT3 built, Jack’s first MRD built F1 weapon and that’s chassis ‘F1-1-62’ . The subsequent 1962 built BT4’s all have ‘IC’, Intercontinental in Brabham lore, chassis prefixes so it’s a bit of a mystery that I am sure one of you can solve.

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Roy Billington and Jack Brabham fettle the 2.7 litre ‘Indy’ Coventry Climax FPF of Brabham’s BT4 ‘IC-2-62’ prior to the start of the 1963 AGP at Warwick Farm. He won from Surtees Lola Mk4A Climax and McLaren’s Cooper T62 Climax, all three of them using CC’s of 2.7 litres in capacity (SMH/Tait)

It doesn’t follow that the cockpit shot at the articles outset is one of Jack’s cars of course. He sold three BT4’s in Australia to Messrs Davison, McKay and Stillwell. Lex’s ex-Brabham ’62 AGP winning car and Bib’s were based in Melbourne’s Armadale and Kew, both pretty close to Repco’s HQ in St Kilda Road so seem likely subjects for their PR Department or Ad Agency’s photographers. But neither of the chassis numbers work. Mind you Bibs BT4 was ‘IC-3-62’ I wonder if a bit of sixties ‘photoshop’ made it ‘F1-3-62’. Anyway, that’s a theory until one of you can blow it out of the water!…

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Brabham, Brabham BT4 Climax, Warwick Farm, 10 February 1963. En-route to winning the AGP (Aussie Homestead)

Credits…

Michael Gasking Collection, Nigel Tait Collection, Repco, Sydney Morning Herald, oldracingcars.com, Aussie Homestead

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(John Arkwright)

Check out the view Maxxy!

Niel Allen and Max Stewart having a contretemps at Skyline, Mount Panorama, Bathurst, Easter 1969…

The bucolic terrain of New South Wales Central Tablelands stretches into the distance, the view probably not what the two drivers were focussed upon at the time. The race was the ’69 Bathurst Gold Star round, the field of which was substantially reduced by this first lap prang. The incident happened when Max misjudged his braking behind John Harvey, locked a brake and boofed the fence in his Mildren Waggott 1.6. Niel was right up Max’ chuff in his ex-Piers Courage McLaren M4A Ford FVA 1.6 and couldn’t avoid him. Out of shot is Queenslander Glynn Scott’s Bowin P3 FVA who also joined in the fun!

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Nice butt shot of Harvey’s BT23E; note wing mounted to cars uprights at rear, ‘RB740’ ‘between the Vee engine’ and oil cooler up in the breeze (oldracephotos.com)

Here (above) is a shot of Harve’s Bob Jane owned Brabham BT23E Repco, it was Jack’s works ’68 Tasman car, sold to Bob at the end of the series then raced by John in the following years. In fact it wasn’t a lucky car for Harvey, he had a big accident at the same Easter meeting in ’68 when an upright broke, rooting the car and John. He was in hospital for quite a while after the prang, his speed undiminished when he returned to racing Jane’s stable of racers, sports-racers and tourers.

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Harvey’s BT23E at Bathurst after his big practice accident on 14 April 1968 (Dale Harvey)

Click here for an article on this car;

https://primotipo.com/?s=brabham+bt23e

These fellas are favourites; property developer Allen was later as quick as Australia’s F5000 ‘Gold Standard’ Frank Matich without nearly as many seat miles, Stewart a multiple ‘Gold Star’ (1971/4) and AGP winner (19734/5) and Harvey a winner in everything he raced; speedcars, single-seaters, big sportscars and touring cars, the Bathurst enduro included.

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Start of the Bathurst ’69 Gold Star race: front row comprises Max’ yellow Mildren Waggott, Niel Allen McLaren M4A FVA and on the inside Leo Geoghegan’s Lotus 39 Repco. The blue car behind is Glynn Scott’s Bowin P3 FVA and Harvey’s red Brabham BT23E, the torque of which clearly gobbled up Stewart and Allen on the steep climb up the mountain for Max to nearly run into him heading down the mountain. The white car is Henk Woelders’ 3rd placed Elfin 600 Ford t/c. You can just see Jacks red Brabham on the outside beginning his charge. He had fuel feed problems in practice so was off grid 7 with times well below the cars potential (Neville McKay)

The race was won by Jack Brabham’s F3 based Brabham BT31 Repco on a rare Gold Star Australian appearance fitted into his European program. This little jigger was powered by a 2.5 litre ‘830 Series’ SOHC, 2 valve Repco V8. Easter Bathurst is an historically significant meeting in Repco terms; it was Jack’s last Repco race and win in Australia. Brabham’s last International Repco races were those contested by he and Peter Revson in the USAC Championship that year in Brabham BT25’s powered by Repco ‘760 Series’ 4.2 litre DOHC, 4 valve, methanol fuelled V8’s.

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Brabham between Skyline and The Dipper, BT31 Repco during the race (Dick Simpson)

Check out, rather than repeating myself these articles on the BT31;

https://primotipo.com/2015/02/26/rodways-repco-recollections-brabham-bt31-repco-jacks-69-tasman-car-episode-4/

and on Brabham’s 1969 and 1970 seasons;

https://primotipo.com/2014/09/01/easter-bathurst-1969-jack-brabham-1970-et-al/

This article was inspired by Lindsay Ross uploading quite a few images of this meeting on his oldracephotos.com Instagram page, check it out, they pop up a post every day or so. It seemed an idea to put the images floating around of this meeting in one place. I’ve an Instagram page too, as well as Facebook, just key ‘primotipo’ into the respective search engines and follow the prompts. The FB page has quite a lot of shots I don’t use on primotipo so may be worth a look every few days.

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Brian Page in BT23A with ‘740 Series’ Repco, DNF with broken exhaust on lap 15 in the ex-Brabham/Scuderia Veloce machine (oldracephotos.com)

The first lap accident ruined what could have been an interesting race, Jack cruised to an easy race win by 1.5 minutes from Harvey’s car and Henk Woelders F2 Elfin 600B Ford t/cam.

Historically interesting is that this meeting was on the weekend of 7 April 1969, high-wings were banned globally at Monaco on the GP weekend of 18 May 1969, so it’s interesting to see the ‘Australian State of the Art’ in terms of fitment of said aero devices immediately before they were banned. Brabham tried the ‘bi-wing’ below setup on his BT31 in practice but raced with only a rear wing fitted.

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Of arcane interest, perhaps (from the master of the arcane and tangential) is that all of Jacks ‘works’ Repco engined Tasman cars competed in this race bar one…

Brian Page’s BT23A(1) is JB’s ’67 Tasman car, Harve’s BT23E(1) is the ’68 weapon and Jack raced BT31 the car, late arriving in Australia, which did the ’69 Sandown round only.

Missing is BT19(F1-1-65) the chassis in which Jack won the ’66 World F1 Drivers and Constructors titles, and in 2.5 litre ‘620 Series’ engined form, raced in the ’66 Tasman Series, putting valuable pre-GP season race miles on Repco’s ‘brand-spankers’ V8 at Sandown and Longford.

The only car not in Oz now is BT23E(1) which was, and still may be in the US.

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Jack Brabham guiding BT19 (F1-1-65) into The Viaduct, Longford on his way to 3rd place during the South Pacific Trophy on 7 March 1966, the third race for the new RB ‘620 Series’ V8. The race was won by Jackie Stewart’s BRM P261

Whilst on the arcane it occurs to me is what a versatile, influential and successful design Ron Tauaranac’s BT23 space-frame was in the Brabham Pantheon…

’twas Ron’s clean sheet design for the new for ’67 1.6 litre European F2; it’s variants won a million F2 races over the following years in the hands of aces like Rindt but also in the care of privateer ‘coming-men’. Mind you it didn’t ever win the title despite winning 6 of the ten championship rounds in 1967, ‘graded drivers’ like Rindt were ineligible for championship points. Matra and Lotus took the ‘works entry’ approach more seriously than Jack and Ron during these years, in any event, as a customer racing car the BT23’s won lotsa races, the 1968 Rindt driven BT23C the most successful car of the year.

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Jochen Rindt typically all ‘cocked up’ on the way to a win in the 9 July 1967 ‘GP de Rouen-les-Essarts’, Brabham BT23 Ford FVA. 1.6 litre F2 formula one of great chassis, it not engine diversity, Ford’s Cosworth FVA won every title from 1967 to 1971. F2 was 2 litre from ‘72 (unattributed)

From an F1 perspective the ’67 World Championship winning BT24 Repco was a ‘beefed up’ BT23, to the extent that Ron initially raced his BT24’s with an FT200 Hewland, the Maidenhead gearbox gurus ‘F2 box’ but found that tranny overstressed with ‘740 Series’ Repco V8 torque tearing away at its gizzards, its CWP in particular. I won’t bang on about the BT24 now as I’m in the process of writing an article about the ’67 Brabham/Repco winning season and go into much BT24 detail. Suffice it to say that the F2 BT23 begat the F1 BT24, my favourite Brabham.

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Denny Hulme jumping his BT24 Repco at the Nurburgring during his ’67 Championship winning season. He won the German GP by 40 seconds from Jack (unattributed)

From an Australian viewpoint the BT23 Repco Tasman cars were very important as they provided much needed cars on skinny local grids…

The Tasman Series 2.5 Formula grids were ‘chockers’ with cars and stars, the domestic championship contained quality but not quantity. Budgets for these relatively expensive cars were hard to find in the sixties and Australia’s march to Touring Car domination was already well underway so ‘taxis’ were starting to absorb sponsorship budgets previously devoted to real racing cars.

Funnily enough, even though there was a swag of Repco engined BT23’s running around it was Alec Mildren’s, one off, 2.5 litre Alfa Romeo Tipo 33 V8 engined BT23D(1) which took a Gold Star. Frank Gardner raced this car in the ’68 Tasman, it was then taken over by Kevin Bartlett, the Aussie ace took the ’68 Gold Star in it. Repco never won a Gold Star title, a topic to explore at some stage during the Repco series of articles I am gradually writing with Rodway Wolfe and more recently Nigel Tait’s help.

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Simply sensational Dick Simpson shot of Kevin Bartlett in BT23D Alfa, Hell Corner Bathurst Easter 1968, KB was walking away with the race until a broken rear upright ended his run. Dominant in this car in ‘68/9 (Dick Simpson)

Delving deeper into this BT23 tangent, whilst a BT23 Repco never won a Gold Star, a BT23 Waggott nee Mildren did…

Denny Hulme raced a works F2 Brabham BT23(5) FVA in the ’68 Tasman Series comprehensively boofing the car in the New Zealand Grand Prix at Pukekohe on 6 January, the series opening round.

Denny’s chassis was Jochen Rindt’s Winkelmann Racing entry in ’67, he won 9 Euro F2 races in it including the Rouen event pictured above. Another car (BT23-2) was sent from England for Denny to race in the rest of the series. Feo Stanton and Ian Rorison of Rorstan Racing bought the wreck and sent it to Rennmax Engineering in Sydney for Bob Britton to repair.

Instead of doing so Bob made a jig from the bent frame and sent a new chassis, the Rorstan Mk1 back to the Kiwis. Seven cars were built on the BT23 jig; the Rorstan, Mildren, two Rennmax BN2 and three BN3’s. Of these the Mildren, so named by Alec Mildren, the Sydney Alfa Romeo dealer, team owner and former Gold Star champion was the most successful. The Britton jig was also put to good use over the coming years repairing cars like Harvey’s bent BT23E!

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Max Stewart ‘harry flatters in top gear’ heading down Surfers Paradise main straight and about to guide his 2 litre Waggott powered Mildren missile under the fast right hander and Dunlop Bridge. 9th in the ‘Surfers 100’ Tasman round in 1970 against the F5000’s. Graham McRae’s McLaren M10A Chev won the race but Bartlett’s 2 litre Mildren Mono Waggott was 2nd on this power circuit (Dick Simpson)

So…the Mildren pictured resting against the Skyline Armco fencing at this articles outset is a BT23 design. Max Stewart was prodigiously fast in the Mildren Waggott, he was one of those guys who seemed to get quicker as he got older, in ’69 he was quick, by the mid-seventies he absolutely flew in his Lola F5000’s. He was one of the very small number of blokes in Oz who squeezed absolutely everything out of these, big, demanding, fast, spectacular, fabulous 500bhp V8’s.

Bartlett, Matich, Allen, John McCormack, Bruce Allison, Warwick Brown, John Walker and Stewart in my book were the F5000 aces with Matich, if I have to pick one, the first among equals. Mind you, on sheer speed Alf Costanzo who came relatively late to the F5000 party could have been ‘the one’. Its an interesting topic to debate, end of F5000 tangent!

One of the pit sights which always amused me, and admittedly small things amuse small minds was big Max, he wasn’t a ‘fat bastard’, but he was 6’2”, crammimg himself into one of his cars before setting off for the dummy grid. If there was a taller bloke than Max in F5000 globally I’d be intrigued to know his name. He must have given away at least 10Kg to the rest of the grid before he even plopped his arse into the tight aluminium monocoque confines of the F5000 Lolas in which he excelled.

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Max was big of stature and heart; here he is after winning the Rothmans International Series ‘Sandown Cup’ on 20 February 1977, his last big win, Lola T400 Chev, sadly not too long before his untimely death at Calder, 19 March 1977 (Ian Smith)

By the time Merv Waggott was building 2 litre variants of his superb DOHC, 4 valve, Lucas injected, bespoke aluminium blocked engines they were outright winners in 2.5 litre Tasman Formula events in the hands on the Mildren Duo, Messrs Bartlett and Stewart. The first Gold Star for F5000 was in 1971; Max’ Mildren Waggott won the Gold Star with about 275bhp from his close mate Bartlett in a much less nimble and reliable 500bhp McLaren M10B Chev in a year of speed and consistency. I don’t care what anyone says, F5000’s driven to their limit were always a little brittle.

So, to join the dots, a BT23 design did win the Gold Star albeit called a Mildren. Stewart’s Mildren Waggott and Bartlett’s Mildren ‘Yellow Submarine’ Waggott are tangents too far for this article and a wonderful future topic, there is a sensational article to be written there with Kevin Bartlett’s first-hand assistance on both chassis’ and engine if I ask him nicely…

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Merv Waggott changing plugs in his baby, Wigram 1970. Bartlett’s Mildren Mono ‘Yellow Submarine’ Waggott (Bill Pottinger/the Roaring Season)

Merv Waggott changing plugs in one of his superb jewels. An all alloy, DOHC, gear driven 4 valve Lucas injected circa 275bhp 2 litre engine. Its in the back Of Kevin Bartlett’s Mildren ‘Yellow Sub’ Waggott, shot is in the Wigram paddock, 1970 Tasman round on 17 January on 7 December. KB had a lousy meeting, not setting a practice time and DNF on lap 6 with engine dramas, Stewart was 3rd though in his car, Matich the winner in his McLaren M10A Chev.

The Waggott 2 litre engine was first built in late 1969 and initially developed circa 250bhp, its output later circa 268-275bhp with about 160 lbs/ft of torque. It raced to a win in KB’s hands in the ‘Sub upon debut in the ’69 ‘Hordern Trophy’ at WF, KB won again at the 1970 Warwick Farm Tasman round ahead of all the F5000’s and 2.5 Tasman Formula cars.  2 litre Waggotts won Australias’ Gold Star in 1970 for Leo Geoghegan (Lotus 59) and Stewart in ’71 as noted above.

An article about Merv and his creations is a wonderful feature for another time. Briefly for international readers Waggott’s Sydney shop built race winning engines from the 1950’s, checkout the article below on the WM Special/Cooper T20 Waggott Holden twin-cam 6 cylinder raced by Jack Myers and tested by Stirling Moss in the late ‘50’s as some background.

https://primotipo.com/2015/02/10/stirling-moss-cumberland-park-speedway-sydney-cooper-t20-wm-holden-1956/

Winding the clock forward, as the ANF1 2.5 litre formula spluttered on in the late sixties a ‘battle to the death’ was fought for the new ANF1 category in Oz between opposing forces who supported either F5000 or 2 litre F2. The latter to commence in Europe from 1 January 1972, F5000 commenced in Europe in 1969 and was born in the US as Formula A earlier still.

Waggott engines were initially of 1600cc, then later 1860cc and used the ubiquitous Ford Cortina block, same as Cosworth’s 1’6 litre FVA wherein Keith Duckworth tested his design ideas in advance of finalising his DFV design. In 1600 form the Waggott would have been Euro F2 legal, it used a production block as the regs required. The 1.6 litre F2 started in ’67 and ended in 1971 when it grew to 2 litres. There were a few FVA’s racing in Australia, the 1.6 Waggott more than a match for them, no Waggott’s, sadly, ever raced in Euro F2.

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Lance Ruting studio shot of one of the engines, Ford block by the look of it so 1600 or 1860 (autopics.com)

Waggott 2 litre engines used a bespoke aluminium block as the stock cast iron Ford block maxxed out at about 1860cc. Beyond that the pistons kissed! Mike Hailwood’s Surtees TS10 won the ’72 Euro F2 Championship running Brian Hart built Ford BDA’s of 1850cc, those competitors running greater capacity than that had unreliability. The final Euro 2 litre F2 regs required production blocks from 1972-75 until ’76 when ‘racing engines’ were allowed. So, in the earliest years of the class the Waggott was ineligible.

Merv’s engines could have raced in F2 from ’76 but he had long before told CAMS to ‘shove it’ after F5000 was chosen (probably rightly given the backing of Ford, Holden and Repco who were building V8’s/wanting to develop an F5000 variant of the Holden engine in Repco’s case) as Australias’ new ANF1 from the 1971 Gold Star competition.

Had the ingenious, beautifully built little engine been Euro F2 Championship legal in 1972 Sydney’s Waggott Engineering had the winning engine! The engines were tried, tested championship winning donks ready to pop into any car. 275bhp and a big fat torque curve, Kevin Bartlett quoted the usable rev range of 6800-8750rpm, would have done the trick in 1972, the BMW M12 changed the F2 game from ’73 of course.

A wonderful ‘mighta-been’ all the same. Merv could have ‘stolen the F2 march’ in 1972 in much the same way Repco did in F1 with its Olds F85 production block based ‘620 Series’ V8 in 1966…

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Max Stewart on the way to winning the ‘Angus & Coote Trophy’, the 1971 Oran Park Gold Star round on 27 June. Mildren Waggott 2 litre, Graeme Lawerence was 2nd in a Brabham BT30 FVC, the little cars succeeding as the F5000’s fell away (Dick Simpson)

Credits…

John Arkwright, oldracephotos.com, Dick Simpson, Dale Harvey, Bill Pottinger/The Roaring Season, Ian Smith, Neville McKay, autopics.com.au

Bibliography…

oldracingcars.com, F2 Register

Tailpiece: A Lotus to end an article on Brabhams…

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Leo Geoghegan’s Lotus 39 Repco with ‘830 series’ Repco V8, started from the Bathurst ’69 pole but out on lap 12 with a gearbox problem, his time would shortly come with this car, winning the JAF Japanese GP later in 1969 amongst a classy field (oldracephotos.com)

Click here for an article on this ex-Clark chassis;

https://primotipo.com/?s=lotus+39

Finito…

 

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Introduction…

As Brabham, Tauranac and Denny Hulme scanned the competitive landscape as 1966 unfolded they formed the view that a similar formula to ’66 stood a good chance of success in 1967. A small, light, responsive chassis, this time designed around the engine. Remember that Jack’s successful ’66 mount, BT19 was an adapted, unraced 1965 GP car Tauranac designed around the stillborn Coventry Climax Flat-16. Ron’s ’67 BT24 was and is a superb car, its race record we shall review in an article about Brabham Racing Organisation’s (BRO) successful ’67 season.

In terms of the engine, keeping it simple and light had paid big dividends for Repco Brabham Engines Pty. Ltd. (RBE) in the first year of the 3 litre formula.

The fortunes of Ferrari, BRM, its H-16 engine the antithesis of the Brabham Repco’s in terms of weight and complexity and the Maserati V12 were well covered in my article on the ’66 season. Dan Gurney’s Weslake V12 engine showed promise but reliability continued to be an issue. The Ford Cosworth DFV didn’t race until the Dutch GP in June 1967. Brabham’s needed more power of course, too much power is rarely an issue, but they figured they needed less power than most others on the grid. If Jack and Denny started the season with a reliable, just quick enough package BRO could retain their title as others sought to make what were ultimately potentially quicker, more sophisticated multi-cylinder, multi-cam cars reliable. Click here for my article on Jack’s successful 1966 season; https://primotipo.com/2014/11/13/winning-the-1966-world-f1-championships-rodways-repco-recollections-episode-3/

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The beautifully fast, light, forgiving championship winning Brabham BT24 Repco 740 ahead of Chris Amon’s Ferrari 312 at Le Mans during the ’67 French GP. Denny 2nd to Jacks winning sister car, Amon DNF with throttle linkage failure (Automobile Year)

They were an intensely pragmatic group of racers in this Brabham/Repco senior mix…

Repco’s Charlie Dean, Phil Irving, Norman Wilson (designer of the ’67 RBE740 Series V8) Brabham and Tauranac all built winning cars (and bikes in Phil’s case) themselves, as in built with their own hands. Dean created the extraordinary series of Maybach Grand Prix cars, look at my Stan Jones article for much detail about this series of racers built by Charlie and initially raced by him, and then later by Stanley with much success. Norman Wilson built a Holden engined special in his youth covered in brief at the end of this article. Tauranac and his brother Austin built and raced the ‘original’ Ralts before Ron joined Jack in the UK in 1961.

Dean, Wilson, Tauranac and Brabham had been/were drivers. They knew what it took to win races. They understood winning was as much about torque as power. Handling was essential, the circuits then were all far from just requiring top end power, what was needed at Monza was different to the blend of corners and contours at Brands. All had driven cars and lost races due to unreliability. They understood a balanced package was critical, that whatever power they had needed to be put to the road. The point I make is that these guys were practitioners not theorists on ‘an engineering jolly’.

The RB group were about the application of sound pragmatic engineering practice, they didn’t have to think deeply about this stuff it was part of their DNA given the ‘build and develop it yourself’ school from whence they came. These guys weren’t ‘university engineers’ (which is not to say they lacked formal qualifications) but very practical chaps. Let the others chase ‘engineering perfection’ as they saw it, ‘an evolution of what we have is probably enough to do the trick’ was the correct thinking.

It was a whole different ballgame they confronted at the same time in ’68, but this was mid-’66, the game-changing DFV was still a distance away…

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Repco studio shot of the front of the amazingly compact ’67 championship winning ‘RBE740’, SOHC, 2 valve ‘between the Vee exhaust’, circa 330bhp V8. The ‘mix and match’ of engine parts described in the text is proven by use of 620 water pump, 630 chain timing cover, oil filter American ‘Purolator’, note oil pump below the dry sump pan, and up top the ends of aluminium water cooling rails, Bosch distributor and Lucas fuel injection trumpets (Tait/Repco)

1967 Engine Design Deliberations…

Ex RBE Engineer Nigel Tait; ‘By July 1966 the World Titles had already been ‘wrapped up’ for the year so the team were already thinking about the engine for 1967. Phil, Jack and Ron were all keen on the idea of getting the exhausts out of the airstream to clean up the car in terms of better aerodynamics and also for ease of plumbing the exhausts which otherwise had to negotiate the tubular chassis frame’. The 1966 BT19 championship winning chassis did not present a very effective frontal profile, its exhausts well out in the breeze.

Colin Chapman was far from the first chassis man to be prescriptive about design elements of an engine, as he was to Keith Duckworth in relation to the Ford Cosworth DFV, particularly in relation its integration with ‘his’ chassis.

Between the Vee exhausts had been raced successfully by BRM with its P56 1.5-2 litre family of V8’s in recent years. Ferrari also chose the same approach with its ’67 3 valve V12, its fair to say it was an F1 design trend of the time. In some ways Ferrari’s approach was better than Brabham’s as Ron maintained outboard springs and shocks on both the front and back of his ’67 BT24 chassis. Ferrari, as they did in 1966, used a top rocker and inboard front spring/shock presenting less resistance to the air at the front of the car at least. Ferrari went outboard at the back like Brabham. (and the rest of the grid)

rb 620 and 740

Old and new; ’66 RB620 305 bhp V8 left and ’67 RB740 330 bhp V8 right, F1 champions both. 740 was 3 inches shorter, 4 inches wider across the heads and 15 lbs lighter than 620. Dimensions otherwise the same; 25.5 inches long, 17.25 inches wide across the bellhousing (Repco)

Conceptual Design of the Heads…

RBE Chief Engineer Norman Wilson; ‘ It would have been Jack’s idea to put the exhausts in the centre (of the Vee). Jack asked if it could be done. I remember when i started designing them i spent a lot of time, probably 3 or 4 days, just drawing one cylinder up to try and prove that you could fit everything in. See you have got a whole row of head studs, you have got to have water passages between the port. The whole idea was to prove that you could get the inlet port in, exhaust port and all the head studs. That was a giant task to figure out in a way’.

‘It meant putting the outer row of studs underneath the exhaust ports. I don’t think i have the layout now but i remember spending a huge amount of time and finally i went to Frank Hallam (RBE General Manager) and said i think we can do it. And thats how the 40 Series heads started’. ‘To manage to get everything on one side and the thing is unlike most engines we built as we wanted big ports. So to fit all these big ports in plus the port wall, plus the bolt bosses was a major task. I think it took about three days work for me to fit everything in a rough layout’.

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Jack’s BT24 Repco 740 being fettled during ’67, circuit unknown. ‘Box is 5 speed Hewland DG300 transaxle, note rubber ‘donuts’, Lucas injection ‘bomb’ or fuel pump to the right of the box, also rear spaceframe chassis diaphragm. Getting the exhausts outta the airstream shown to good effect in this shot (unattributed)

The ’40 Series’ Between the Vee 1967 Cylinder Heads Design Detail…

‘…the new cylinder heads retained parallel valves but they were now in line with the cylinder axis (instead of at 10 degrees to the axis as on the ’66 20 Series heads and were flush to the head face’ said Wilson. ‘The 40 Series heads used the Heron head design. In this design the cylinder head is flat and the piston has the combustion chamber in the top of the piston (a bowl in piston arrangement). The other feature of the 40 Series head is that it had a tall inlet port. It had a fairly long, relatively straight section there on Jack Brabham’s suggestion. He had received some highly secret information from Honda that this was the way to go. In hindsight i don’t think so. All these things are better in hindsight, but that’s how we did it’

‘The Heron head, i think everyone agreed, had to be the way to go because the Cosworth SCA (F2 engine) was 1000cc and was putting out 120bhp. At the time in F2 it was winning everything. I think it put out 123bhp. Now if you are looking at a 3 litre engine, thats 369bhp. And at that time that would have been been looking for us a fairly exciting sort of figure. The other point about the Heron head is it allowed us to have a single camshaft which we wanted to have the low weight, simplicity and ease of manufacture’.

‘The 40 Series head was purely made for the car. No other reason. It put the exhausts down the centre of the Vee…thats what Ron wanted, he made the car so why not get what he wanted’.

‘The highest output of the 740 Series 3 litre was only a bit over 330bhp. This horsepower rivalry between the different engine manufacturers at the time, the horsepower numbers were really irrelevant. At the time Maserati claimed about 500bhp, but they were adding on about 100bhp to make up for the exhaust gas pollution in the test cell. But really its about the area of horsepower curve’. ‘If they had 500bhp they would be leaving us behind a lot quicker than they are leaving us behind!’ was a quip Rod Wolfe recalls Jack making to the boys in the RBE engine assembly area on one of his trips to Australia in 1967.

‘One of the philosophies was for the engine to always have a wide power range and good power at the bottom end of it which suited the light car. So if ours was 330bhp there was no way other cars had 400-500bhp claimed. Our power was distributed much more evenly across a wider range of revs. Thus Denny Hulme would say it was great to drive a Repco Brabham because he could overtake competitors in the corners as if they were ‘tied to a fence’.

There were some problems with 40 Series head porosity during ’67 as ex-RBE machinist/storeman Rodway Wolfe recalls; ‘Norm did a fantastic job to even succeed with the casting and it proved to be a great engine in larger capacity too, bigger valves etc…we were able to fit very large valves without too many seat problems. The 40 series did have a lot of porosity problems with the ports, some we scrapped as the ports actually broke through when we were porting them and there was not the welding equipment available that we have nowadays to repair them. Porosity, a big drama, as i say, one of my jobs was to send the castings to ‘Nilsens Sintered Products’ in Richmond where they placed the heads in a vacuum and impregnated them with hot resin. Vacuum impregnation solved some of these problems’.

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Brabham on the Warwick Farm grid, WF Tasman round in 1967. In relation to the cooling duct feeding the engine Rodway Wolfe comments ‘There were a few heat problems in the valley of the engine with the 40 series as the fuel metering unit was also located in the valley but small heat shields seemed to correct this problem and it was not an issue once the car was on the track of course’. It seems these ducts were used in the ’67 Tasman rounds on the 640 engines used by Jack and Denny and subsequently sporadically on the 740 engines, Le Mans for example (Bruce Wells)

A typically pragmatic decision to the heads was made in relation to the 1967 Repco block…

Remember that the ’66 engine used a heavily adapted version of the Oldsmobile F85 aluminium block. Repco still had a swag of unused blocks sitting in Rod Wolfe’s Repco store at Maidstone. The blocks had been successful, a world title proof enough of their effectiveness, but the machining and adaption required to make them an effective race tool meant they were expensive but still sub-optimal. But it wasn’t all plain sailing with the block however much it may have seemed so from the outside, Tait; ‘For much of 1966 we had serious blowby issues due to distortion of the dry sleeves and it was not until almost the end of that year that we went to wet sleeves. The F85 Olds blocks came with dry sleeves in situ’.

Repco’s race engine commercial ends were to be served by building and selling engines for Tasman use and for Group Seven sportscars, burgeoning at the time globally; 2.5 litres was the Tasman Formula capacity limit, the F85 ‘maxxed out’ at 4.4 litres which was the capacity used for the sportscar engines. Repco’s first sale of a customer engine was the 4.4 litre 620 Series unit sold to Bob Jane for his Elfin 400.

So Repco decided to ‘have their cake and eat it too’. The new bespoke ‘700 Series’ block would allow all of the F85 ‘600 Series’ bits and bobs to attach to it; heads, timing case, sump the lot. So Repco could gradually use its stock of F85 blocks for Tasman and sportscar use whilst ‘700 Series’ blocks were used in F1 for 1967 and more broadly in capacities up to 5 litres subsequently. As engines were rebuilt the 600 blocks were replaced progressively by 700 series units, 600 blocks ceased to be used when there were none left. Typically practical, sensible and parsimonious Repco!

Whilst the ‘700 Series’ block design decision, to allow 600 hardware to be attached was a ‘functional’ pragmatic decision the aluminium block itself was also improved being redesigned to increase rigidity. The new block design was commenced by Irving, he and others say, prior to his departure from RBE, but the completed block is his replacement as Chief Design Engineer, Norman Wilson’s design.

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The post Phil Irving RBE design team; L>R GM Frank Hallam and Engineers Norman Wilson, Lindsay Hooper, John Judd and Brian Heard (Repco)

Phil Irving’s departure by resignation or sacking by RBE GM Frank Hallam is an important part of the RBE story and will be dealt with in a separate article. I explore not just the difficult relationship between these two characters but also the broader issues of the leadership of Repco, CEO Charles McGrath’s key enduring support of the RBE program and the appointment of Bob Brown as the Director responsible for RBE instead of alternatives including Charlie Dean at the projects outset. The antipathy between Hallam and Irving was partially about personality but also about politics and legacy in terms of who is responsible for what of the RB620 design and build. More on this topic very soon.

For now lets just focus on the RB740 engine which in no way shape nor form was negatively impacted by Irving’s departure…whilst noting that their probably would have been no 740 had it not been for the success of Jack and Phil’s RB620, JB as the engines conceptual designer and PI as its detail designer and draftsman…

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Machining the RB700 block, note the stiffening ribs referred to in the text (Wolfe/Repco)

Norman Wilson; ‘When i went there (to RBE from Repco Research) John Judd (who had been seconded to Repco by BRO in the UK) had done a new crankcase. So i asked to look at it and John showed it to me and i said we can’t make it. It was impossible because it was the basis of a whole new engine. It became a mutual decision (by the design team) that we make a crankcase that went underneath, on top of and behind exactly what we had’. ‘We couldn’t have made a crankcase, head and timing case all at once. So we made a crankcase and then we did the 40 series heads. We had to have a timing case with the heads but it meant we didn’t have too much to do at once and we just kept progressing’.

Wilson;’The new crankcase was designed from scratch but was also designed so it could accommodate the 20 series cylinder head if we wanted to. It was critical being a fairly small outfit that we had the maximum amount of interchangeable flexibility between all the components that we made. So the 700 series crankcase was designed to overcome the problems that we had seen or experienced with the Oldsmobile F85 600 series crankcase. It had wet liners, that in part was due to the fact that it was easier to cast the cylinder block with a wet liner design in that it simplified dramatically the coring required for the casting of the block’.

‘The Oldsmobile engine showed it had main bearing problems so we altered the main bearing arrangement to be much more rigid. We extended the studs up through into the centre of the Vee with nuts on top to take some of the load up through to the top of the block. The unfortunate part of that was the design was right but people would always do the nuts in the top up tight. And of course what would happen was the cylinder block being aluminium would expand more than the stud and would eventually break it. What they should have done, and no one would listen, was do them up at a much lower torque so when the engine got hot it would put the right load on the stud’.

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RBE Boys, Maidstone, undated but circa 1966/7. Back L>R Kevin Davies, Eric Gaynor, Tony Chamberlain, Fred Rudd, John Mepstead, Peter Holinger. Middle; Vic Mosby, Howard Ring, Norman Bence. Front; David Nash, Rodway Wolfe, Don Butler (Tait/Repco)

‘The front bearing panel of the block was made stronger because this had proved to be a weakness with the Oldsmobile block. The back of the block was made with the same stud pattern as the Olds block so that all the existing gearbox adaptors could be used. The block was made with the idea of making it as light as possible and that was one of the critical things in design. In the end Frank suggested we put some diagonal ribbing on the 700 series crankcase walls to strengthen them’. ‘The sidewalls of the crankcase were actually bolted to the main bearing caps…cross bolting (and strengthened the crankcase considerably). So i felt the diagonal ribbing was really quite irrelevant. …Frank wanted it and, you know, he was a pretty good boss to work for, so thats what we did’.

‘The other thing about the block was that later when we made the 4.2 litre Indianapolis engines (760 Series DOHC, 4 valve V8 in 1968/9) we could alter the sealing arrangements, in fact the later F1 engines (’68 860 Series) were the same, so we used Cooper rings instead of head gaskets. Cooper rings sealed the combustion chamber and O rings sealed the water passages. But we also then had a groove around the outside of the Cooper ring joined with a shallow slot to the edge of the head so if one Cooper ring leaked slightly there was no way it would pressurise the cooling system’.

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RBE700 Series block, note the cross bolted 5 main bearings (Repco)

‘With the Indianapolis engine (760 Series 4.2) those grooves came out of the inside of the Vee. So you could run your engine in the pits and you could put your finger over the end of each groove and you’d know if any of the Cooper rings were leaking slightly. The 700 block was the same height as the Olds F85 block. And the 800 block (860 F1 and 830 Tasman 2.5) was a (1.5 inches) lower one to make the engine smaller.’

The 700 Series block apart from being stronger was also 15 Kg lighter than the F85 ‘600 Series, Norman Wilson again; ‘The F85 block was designed to be diecast on a diecasting machine, it was perhaps a bit thicker in spots just to make it easier to cast. We got rid of a considerable amount of aluminium around each cylinder…The Repco block didn’t have all the bosses down the centre along the block for the cam-followers. It didn’t have the cam-bearings for the centre camshaft (of the F85) We didn’t have the stiffener plate on the bottom. The bearing caps were bigger but they were done a bit better and they were probably no heavier than what was there. And in all the places where strength was not required we just skinned them down as much as we could’.

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(Wolfe/Repco)

Most of the components for the engine were made by Repco subsidiary, Russell Engineering, few were contracted out.

Wolfe; ‘Most of the RBE engine components were made at the Maidstone factory. The pistons and rings however were other Repco companies and the crankshafts Laystall in the UK but no other F1 engine constructor made their own pistons and rings in 1966, even Ferrari used Hepolite pistons so Repco were unique’.

Harold Clisby’s engineering business in South Australia cast many of the heads. Kevin Drage, the senior engineer at Castalloy, the Clisby subsidiary who made the heads recalled that around 120 cylinder heads of four types’ 30,40, 50 and 60 Series were cast by the company over the period of the RBE program.

The 30 Series head was detailed by John Judd and was two valve with inlet and exhaust ports on either side of the head, ‘crossflow’ inlets between the Vee and exhausts out the side. 40 Series (the ’67 championship winner) heads were detailed by Norman Wilson which had inlet and exhaust ports on the same side of the head, between the Vee exhausts.

Drage recalls that; The two valve 30 and 40 Series heads were soon followed by the four valve 50 and 60 series designs. John Judd drew these up with the 50 Series design having diagonally tangentially ported inlet and exhaust valves resulting in 16 inlet trumpets and 16 exhaust pipes, the 60 Series design having siamesed inlet and exhaust ports’. The 50 Series heads which were built and dyno tested and the 60 Series 1968 F1 4 valve, DOHC design are a subject of a future article. The fact that RBE persevered so long, at GM Frank Hallam’s insistence with the 50 Series heads delayed development of the 60 Series design, to RBE and BRO’s cost during the ’68 F1 season.

The Commonwealth Aircraft Corporation at Fishermens Bend, not too far from RBE’s Maidstone factory made the alloy crankcases and timing covers, note that Wilson went to double-row timing chains with RB740 compared with the single chain of RB620.

Ex-Repco engineer George Wade is often given credit for the camshafts but Rod Wolfe says; ‘we made the camshafts for all of the engines, George Wade profiled them to various specs but we turned the billets with a mimic tracer on our Tovalieri lathe. The very first 620 cams were cast iron but were changed to steel in 1966’.

Lucas fuel injection was of course again used, as well as a Bosch distributor.

Summary of RBE740 F1 3 litre engine specifications/suppliers…

Bore/Stroke; 3.5X2.55 inches, capacity 2996cc. Power 330bhp@ circa 8400rpm, weight 350 pounds

Compression ratio 12:1, valve sizes 1 13/16inches inlet /1 1/2 inches exhaust, valve angle vertical, valve lift .40. Valve timing 50, 70, 50, 70

Pistons, rings and main bearings by Repco, big end bearings supplied by Vandervell

Lucas fuel injection, Bosch coil and distributor, Champion plugs, Esso fuel and oil and Borg and Beck clutch

Denny Hulme and Jackie Stewart, Levin NZ Tasman 1967 (Digby Paape)

Denny Hulme DNF ignition and Jackie Stewart 2nd in their ‘between the Vee’ exhaust Brabham BT22 ‘640 Series’ Repco and BRM P261 respectively Levin, NZ 14 January 1967 (Digby Paape)

Racing the 640: 1967 Tasman Series…

The first race of the 1967 GP season was the South African GP at Kyalami on January 2, Jack and Denny raced 620 Series V8’s, the 740 was running late due to delays in patterns being made for the 700 crankcase. Its an interesting observation given that Hallam told Brabham by letter dated 23 September that the 700 patterns were half finished. In any event, the engine was late so made its debut in the Tasman Series, or more specifically 640 Series engines did; the new heads atop the 600 Series/F85 Olds blocks.

jack south africa

Brabham giving his 620 engined BT20 some welly at Kyalami during the South African GP at Kyalami on 2 January 1967, he was 6th from pole with Denny 4th from grid 2. Pedro Rodriguez won in a Cooper T81 Maserati (unattributed)

RBE staff numbers during the Christmas/New Year 1966/7 period swelled to 37, 23 engines being assembled during this period. Frank Hallam records that due to the great amount of dismantling, assembly and experimentation that took place only four 2.5 litre motors raced in the Tasman Series. The 640 series 2.5 litre Tasman engines gave circa 265bhp@8500rpm.

Brabham’s full ’67 F1 season i will cover in a separate article, here we look at the Tasman races for the 640 and early season F1 races of the 620 and 740.

gasking and bton, pre sandwon

RBE’s Michael Gasking and BRO’s Roy Billington and another mechanic prepare Brabham’s ‘RB640’ 2.5 V8 engined BT23A before the Sandown Tasman round on 26 February 1967, DNF ignition. Repco Maidstone factory (Wolfe)

If you take the view that the ’67 Tasman was a warm up for the ’67 World Championship then it was a success for Brabham and RBE. The 40 Series heads were thoroughly race tested during the annual Australasian summer contest.

Equally important was Jacks mount, his car designated BT23A was an adaptation of Ron Tauranac’s very successful new 1967/8 BT23 F2 design, which won dozens of races in Ford Cosworth FVA 1.6 litre F2 spec. The Tasman BT23A was effectively the prototype of the BT24 which went on to win the ’67 titles, so the Tasman ‘blooded’ both the chassis and engine well before the F1 season. The reliability which flowed from this development process won RBE and BRO the ’67 championships, the Lotus 49 Ford Cosworth DFV was well quicker but had not had the development miles the Brabham Repco’s had…

Jim Clark took the 1967 Tasman title in an F1 Lotus 33 fitted with a stretched to 2 litre Coventry Climax FWMV V8 engine, a quick, reliable, well proven combination. Clark took 3 wins, Jackie Stewart 2 in a similar F1 BRM P261. But the stretched to about 2.1 litres P56 V8 stressed the BRM transmission to its limits, the ‘tranny its weakness that summer. Jack was equal 3rd on the points table to JYS with 1 win.

Jim Clark, Lotus 33 Climax, NZ Tasman, Levin 1967

Jim Clark Lotus 33 Climax, Levin International winner, 14 January 1967 (Digby Paape)

Jack and Denny contested all rounds of the championship with the exception of Teretonga, the last Kiwi event. Jack took a win at Longford and Denny 3rd at Wigram his best. Brabham had a lot of unreliability but the problems weren’t in the main engines; for Denny a radiator hose at WF, gear selector at Sandown and electrical problems at Longford and for Jack a driveshaft breakage at Teretonga and ignition dramas at Sandown.

Denny Hulme, Brabham BT22 Repco, 1967 NZ Tasman, Levin

Denny Hulme’s pretty, effective, Brabham BT22 ‘640’ Repco, Levin 1967. DNF ignition (Digby Paape)

At that stage Repco hadn’t sold customer Tasman 2.5 engines of any type, the engines were made available later in the year in time for commencement of the domestic Gold Star series (640 & 740 Series 2.5 V8’s) in the meantime the more important business of getting the 3 litre ‘740 Series’ V8’s into Tauranac’s exquisite little BT24 was the priority.

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Jack from Denny in BT20’s; Jack’s 740 engined and Denny’s 620, Denny won both heats and Jack the final giving the 740 the first of its many wins in 1967. Oulton Park ‘Spring Cup’, 15 April 1967 (Brian Watson)

The first F1 event of the European ’67 season was the Race of Champions at Brands Hatch on 12 March. Dan Gurney won both heats and the final in his Eagle T1G Weslake, Jack was 9th a ’66 spec 620 engined BT20 with Denny DNF, similarly equipped.

The ‘Daily Express Spring Cup’ at Oulton Park followed on 15 April, Brabham ‘cleaned up’ in BT20’s; Denny won both heats and Jack the final taking a great race win for the new 740 3 litre V8 with Denny 2nd in a 620 engined ’66 chassis.

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Jack proved the speed of the new RB740 V8 at Monaco, its championship race debut, plonking it on pole but it went bang with a broken conrod in the races 1st lap, car is Jack’s beloved ‘old nail’ Brabham BT19, his ’66 championship winning chassis. Denny won in ‘last years’ quick and reliable BT20 Repco ‘620’ (unattributed)

BRO fitted its first 740 Series engine just in time for the Monaco GP on May 7. Apart from the delays caused by late patterns for the blocks, Repco Die and Tool Co forged conrods developed faults. After being unable to establish why the Repco rods were failing the team went the Carillo route, the team using these tried and true products…despite not being made in Oz! Rod Wolfe; ‘We did discover that the champfer at the bolt heads did not match the bolt radius under the head of the bolt and even when tensioned correctly they were not seating properly resulting in a couple of failures’.

The definitive RB ‘740 Series’ engined Brabham BT24 didn’t appear until Jack gave the chassis/engine combination its championship debut at the Belgian GP, Spa on June 18. This was 2 weeks after the Ford Cosworth DFV V8 took the first of 155 GP wins, the 1967 successful Brabham GP season a Repco story for next time…

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‘Black Jack’ at La Source during the ’67 Belgian GP. Both he and Denny retired with engine problems in BT24 and BT19 respectively. Dan Gurney took a famous and well deserved win in his Eagle T1G Weslake V12, 18 June. Compact nature of the F2 derived BT24 clear (unattributed)

Repco 1966/7 promotional film…

Check out this great footage, the first half covers Brabham’s victorious 1966 F1 season, the other bit the ’67 Tasman season, the debut of the 640 Series V8’s including some factory footage of the engines build.

Etcetera…

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Rodway Wolfe ‘The dyno test house at the rear of the Repco Maidstone factory. The silver drum on the side was the fuel tank which was changed when needed. The walls of the building were very thick…when the engines were running at full noise you could hold your hand against the wall and get a massage! Fascinating!’ (Wolfe)

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Repco 640 2.5 V8 power; Jack all cocked up in Warwick Farm’s Esses during the AGP, Warwick Farm 19 February 1967. Brabham was 4th in his BT23A, Stewart won from Clark and Frank Gardner in BRM P261, Lotus 33 Climax and Brabham BT16 Climax respectively (unattributed)

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Repco works Brabham Repcos’ on the move, Tasman Series, Longford, Tasmania 1967. ‘Rice Trailers’ the ducks guts at the time, tow cars are Holden ‘HR’ Panel Vans, 3 litre straight OHV 6 cylinder engines and ‘3 on the tree’ column shift manual ‘boxes (Ellis French)

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Sandown Tasman, 26 February 1967, Brabham, Brabham BT23A Repco, Stewart BRM P261 and Hulme on the outside, Brabham BT22 Repco, all DNF! Jack with ignition, Stewart crown wheel and Hulme gear selection problems. Clark won in a Lotus 33 Climax. You can see the ducts directing cooling air between the Vee shown in an earlier shot (unattributed)

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Jack hooks into the Viaduct ahead of Jim and Denny in David Chintock’s impression of the ’67 Longford Tasman round which Brabham’s BT23A won (Wolfe/Racing Car News)

Etcetera: Norman Wilson RBE740 Chief Designer…

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Norman Wilson in the study of his St Kilda, Melbourne bayside home in early 2016 (Greg Smith)

Its interesting context to Wilson’s work at Repco Brabham Engines to look at the car he built as a ‘youngster’ before his ‘glory years’ as part of the Maidstone team. The car is both innovative and practical in its adaptation of proprietary parts, a combination applied in his later work.

As the cars current owner Greg Smith observes ‘the Norman Wilson Special is a beautiful study of a late fifties racing car with its Mercedes’ styling and layover engine, side vents and knock-off wire wheels’

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‘Norman Wilson Spl’ in the foreground at Templestowe Hillclimb in then outer eastern Melbourne. Pat Hawthorne’s Lycoming Spl behind. The carbs are Webers, sidedraft right angle alloy castings (Greg Smith)

Norman started his 6 cylinder Holden engined ‘Norman Wilson Spl’ around 1956 aged 29/30. The chassis is a spaceframe, front suspension Wilson’s using inverted Holden uprights and wishbones, his own cross member and geometry. Steering is rack and pinion. The rear end is a ‘cut and shut’ Holden with an offset diff to lower the driver, springs are quarter elliptics with some neat locating links.

The clever bit was laying the Holden engine over at 30 degrees to the horizontal to both lower both the centre of gravity and bonnet line. By the time the car was finished Norman had moved to Repco, where it was completed and furnished with 3 large, single throat Webers Charlie Dean bought for Maybach but never fitted to it when that car was fuel injected. The ‘box was Jaguar, the beautiful aluminium body built by Barry Hudson who also did the Ian Mountain (Peugeot) Spl.

Norman raced the car, mainly in Victoria from 1960-63, it passed through several hands before being ‘chopped up’ in the late ‘60’s. With the interest in historic racing growing, and knowing the historic significance of the car and driver, reconstruction was commenced by Graemme Brown in Adelaide in the mid 1980’s, its first run in 1997. The car is currently being rebuilt by Victorian racer, engineer and raconteur Greg Smith to its precise period spec from whom this history and photos were provided. There is a whole lot more to this incredibly clever car built by Wilson in his youth, we will do a feature on it when Greg is close to its completion, I’ve seen it, the thing is sensational, Smithy will race it during 2017. I also plan to write more about Norman Wilson’s career, too little is known about this fella, now 91. so important in the Repco story.

Bibliography…

Recollections of Rodway Wolfe and Nigel Tait

Norman Wilson quotes from Simon Pinder’s ‘Mr Repco Brabham’, Doug Nye ‘History of The Grand Prix Car’, ‘Phil Irving: An Autobiography’

Kevin Drages comments from ‘The Nostalgia Forum’

Greg Smith’s photos and details of Norman Wilson and the ‘Norman Wilson Spl’

Photo Credits…

Rodway Wolfe and Nigel Tait Collections, Repco Ltd archive

Autocourse, Digby Paape, David Keep, Bruce Wells/The Roaring Season, David Keep/oldracephotos.com, Automobile Year, Ellis French, David Nash

Tailpiece: Jack Brabham guides his Brabham BT23A Repco into the Viaduct on his way to victory in the ‘South Pacific Trophy’, Longford 5 March 1967. He takes the first of many ’40 Series’ Repco 1967 wins…

jack longford

 

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(Dick Simpson/oldracephotos.com)

Frank Matich’s 5 litre, quad cam, 580bhp Repco V8 powered sports racer ‘SR4’ was one of Australia’s most powerful and the most successful sports-racer car ever built…

Here Frank charges the big bellowing racer across the top of Mount Panorama during the 1969 Easter Bathurst meeting. The circuit is wild now, it would have been staggering to guide this missile around the circuit then, its surface and safety features, note the proximity of eucalypts on the tracks edge, not quite what they are now!

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Paddock shot of SR4, Calder 1969, some of the competition were more recent than this group! (Ian Pope)

Introduction…

Built for the 1968 CanAm series, both the chassis and engine were late so Matich didn’t ever follow up his exploratory 1967 CanAm part-season in his 4.4 litre Repco powered SR3, instead belting the local opposition into oblivion with the SR4 in 1969.

First raced at Warwick Farm on 1 December 1968, Matich won the 3 round 1969 Australian Sportscar Championship with a perfect score; wins at Warwick Farm, Surfers Paradise and Sandown, in 2nd place was West Australian Don O’Sullivan in Frank’s old SR3 Repco. In between he raced in front of thrilled crowds who were drawn to see the fastest car in Australia regardless of category.

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Matich leads the pack at Warwick Farm, date unknown 1969, SR4 Repco (Tait Collection)

‘The car was last raced about May 1970 at Warwick Farm, Frank was second to Niel Allen’s Elfin ME5 Chev, he drove the car gently as the engine had a vibration which a subsequent tear down at Repco revealed was the front of the crank cracking’ recalls Derek Kneller, an ex Matich engineer/mechanic from 1969-74. ‘The car was kept under a dust sheet in the Artarmon (Sydney) workshop until after the Tasman Series in 1971 when FM asked us to clean it up, it hadn’t been used for 8 months, we delivered it by trailer, still with the engine fitted, to Repco in Maidstone, Melbourne’.

SR4 was then used as a display piece, never to be raced again until the ‘modern era’ when it was restored by its owner, former Repco engineer Nigel Tait who has had a connection with the car since its construction. This bulk of this article is by Nigel, the photos are mainly from his vast archive of shots of this wonderful, very significant Australian racing car.

This piece is a biggie and comprises numerous parts;

.Historical context for the building of SR4; the earlier SR3 (3 chassis) in particular a summary of its 1967 CanAm program

.Biography of Nigel Tait

.Nigel’s story of the cars design, construction, specifications, race record and restoration

.SR4 specifications

.Etcetera; SR4 related snippets

.How competitive would SR4 have been in the ’68 CanAm had it crossed the Pacific as originally intended, this section designed to stimulate discussion amongst Australian enthusiasts of the period!

.Matich Cars; list of all cars built by FM’s business

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Early shot of SR4 when still fitted with a ZF ‘box, LG Hewland fitted later in the year, suspension and engine as per text (Repco)

Frank Matich and Matich Cars…

Matich was one of Australia’s drivers who was as quick as the best in the world during the early sixties Tasman 2.5 Formula when the locals went head to head with the internationals in near enough to identical cars.

Frank then focused on sportscars from 1966 to 1969, as we shall see.

In 1969 Matich returned to single-seaters, F5000 and again proved to be the equal of if not better than the best in the world winning races in Australasia and the US before retiring at the end of the ’74 Tasman Series.

In addition, his team designed and built world class sports and F5000 cars from late 1966 to early 1974. His cars won races after that, John Goss took an exciting 1976 Australian Grand Prix win at Sandown in an A51/3 Repco chassis for example.

A list of the cars Team Matich built is at the end of this article.

I have written some pieces about Frank before, rather than than provide background again click on these links, the best quick career summary is this one, sadly an obituary;

https://primotipo.com/2015/05/11/frank-matich-rip/

See this pictorial though;

https://primotipo.com/2015/05/27/jaguar-c-type-xkc037/

This monster piece is mainly about his F5000 racing but also includes earlier career material;

https://primotipo.com/2015/09/11/frank-matich-matich-f5000-cars-etcetera/

And this one is about his 1966 Elfin 400 Traco or the ‘Traco Oldsmobile’ as he named it;

https://primotipo.com/2015/05/28/elfin-400traco-olds-frank-matich-niel-allen-and-garrie-cooper/

The latter article about the Elfin 400 is the most important in the context of the Matich SR4, the 400 evolved into the Matich SR3, the SR3 to the SR4…

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Matich awaits the start of practice, Road America, 3 September 1967. SR3 Repco (Friedman)

Matich SR3…

The first Matich SR3 Traco Olds was built in late 1966 to replace the Elfin 400 Traco Olds upon which it was based. According to some close observers, including at least one of FM’s mechanics the SR3 chassis was ‘tube for tube’ identical to the Elfin 400 albeit strengthened with the learnings of racing the car from the start of ’66 until it was sold to Niel Allen later that year.

The aerodynamics of the SR3 were entirely different to Garrie Cooper’s 400 design and are a function of the 400’s shortcomings and FM’s ongoing absorption of global design and aerodynamic/styling trends. The 400’s ‘aero’ deficiencies are examined in detail in my Elfin 400 article above.

can am 1967

FM a happy-chappy in the Road America paddock, 1967 (Friedman)

This section is not a detailed article about the 3 SR3’s FM’s team built but rather a summary to provide context about the SR4’s build.

The first CanAm Series was won by John Surtees in a Lola T70 Chev in 1966 but there had been professional sportscar races on America’s West Coast back into the 1950’s.

During the 1.5 litre F1 years (1961-65) big brutal ‘Group 7’ sportscars powered by ever increasing in size ‘stock block’ American V8’s thrilled crowds with their speed on both sides of the Atlantic. The best of the worlds drivers contested the races, rich prize money the reward for success in events of 200 miles, GP length, duration.

Frank Matich had ample opportunity to hear first hand during the Tasman Series about the US scene from Jim Clark, Graham Hill, Jackie Stewart, Bruce Mclaren, Phil Hill and Jack Brabham all of whom contested CanAm races, not least Bruce who had also been building Cooper based cars and McLaren/Elvas to contest the races for years.

Matich determined to contest the 1967 CanAm to test his mettle against the best in the world knowing their was little point being ‘king of the kids’ in Oz. The reality is that whilst the domestic single-seater Gold Star competition had some depth, in sportscars their was little at all.

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Naked SR3 Repco in the Road America paddock, 1967. Spaceframe chassis RBE ‘620 Series’ 4.4 litre, SOHC, Lucas injected, 400bhp V8 (Friedman)

Repco were also finally selling their engines to customers (as against providing works engines to Brabham with which Jack had contested the ’66 Tasman and won the ’66 F1 World Title) so Frank figured the 4.4 litre, sohc, ‘620 Series’ 400bhp V8 would be a much more competitive proposition than the highly stressed aluminium, pushrod Olds V8 engines he used in the Elfin 400/Traco Olds and his first SR3.

It was a big ask.

McLaren had persevered with the lightweight aluminium Oldsmobile engines until 1966 when he fitted 6 litre cast-iron Chevs to his spaceframe McLaren M1B. His 1967 M6A, a joint design effort between Bruce and Robin Herd were stunning, simple, monocoque cars superbly driven by Bruce and Denny Hulme to 5 wins from 6 races with Bruce taking the drivers and McLaren the manufacturers titles. The ‘Bruce and Denny Show’ rolled on thru to the end of ’71 when Porsche finally ended the party.

Matich raced two SR3 chassis in a limited campaign in the ‘Non Works McLaren’ class!

As a warm-up Matich won the RAC Trophy at Warwick Farm on May 4 and the ‘Australian Tourist Trophy’ at Surfers Paradise on 21 May 1967 from Alan Hamilton’s Porsche 906 and Glynn Scott’s Lotus 23B Ford. The SR3 was Olds powered.

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Matich SR3 Repco leads a group of cars, John Cannon in a McLaren M1B Chev the car behind him, Road America 1967. FM retired with a stone thru his radiator on lap 15, Denny Hulme won in a McLaren M6A Chev (Friedman)

The 1967 CanAm started at Road America, Wisconsin on 3 September and finished with the sixth and last round at Las Vegas on 12 November, the well oiled McLaren Team crushed the opposition winning all but the final round which ’66 champion John Surtees took in a Lola T70 Chev.

McLaren deservedly won the title from Hulme despite Denny winning 3 rounds (Road America, Bridghampton, Mosport) and Bruce 2 (Laguna Seca, Riverside).

Matich and his small team contested the Road America, Bridghampton, Laguna Seca and Riverside rounds. Fundamentally the car, sweet handling as it was, was outgunned. Its 400bhp Repco having way too little grunt and lacked the reliability for these Grand Prix length sprints of 200 miles.

At Road America the SR3 qualified on 2:22, 18th  to McLarens pole of 2:12.6, retiring on lap 15 with a radiator holed by a stone. In the glorious Hamptons in New York on 17 September he qualified 15th 1:33.49 to Hulme’s 1:29.85, but again DNF this time with fuel starvation.

Frank’s team missed the Mosport, Canada round on 23 September which Hulme’s M6A won.

In California for a couple of races FM gridded 13th at Laguna Seca on 1:05.07 to McLarens blistering pole of 1:02.69, a race Bruce won. Interestingly the Ferrari P4/350 CanAm (a P4 lightened, modified and increased in capacity) did their first ’67 event, Amon finished 5th but qualified behind Matich in 16th on 1:05.77.

Matich and Amon, the latter in in David McKays Ferrari P4/350 CanAm had some sensational scraps that Australian summer in the sportscar races which supported the Tasman Series rounds with the Repco powered car demonstrably quicker than the exotic, long distance derived V12 powered Ferrari.

matich riverside

Matich, wife Joan his mechanics, Peter Mabey at left and Firestone technicians on the Riverside pit apron, CanAm 29 October 1967, John Surtees Lola T70 Mk3B Chev behind. Bruce won the race, Matich crashed and Surtees DNF with ‘rear end’ problems (unattributed)

Still in California, at Riverside on 29 October McLaren won, Hulme was on pole with 1:39.30, Matich 20th on 1:45 and Amon 15th on 1:44.40. Frank crashed out on lap 20. With that the team decamped back to Oz to prepare for the Tasman Series encounters with Amon, with Matich winning each of these battles. Click here for an article on the Ferrari P4/CanAm 350 ‘0858’ inclusive of the Matich/Amon battles;

https://primotipo.com/2015/04/02/ferrari-p4canam-350-0858/

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Jack Brabham, Brabham BT19 Repco and a very young Nigel Tait at the Sandown Tasman meeting, the second race outing for the first ‘RB620’ engine, 2.5 litres in Tasman spec, 27 February 1966. The young engineer had just graduated from the Royal Melbourne Institute of Technology and has ‘landed on his feet at Repco Brabham Engines. Tait maintains this car for Repco all these years later. One of a kind BT19 is Jack’s 1966 championship winning mount (Australian Post)

Nigel Tait…

Having qualified in Mechanical and Automotive Engineering at Royal Melbourne Institute of Technology Nigel commenced work at Repco in 1966 as an Engineering Cadet. His first placement, you can be lucky!, was in the engine laboratory in Richmond where the Repco Brabham engines were built and tested. He helped to plan and implement the move of the Repco Brabham project to another plant, in Maidstone, this involved manufacture of shadow boards for the new machine tools being installed for further manufacture of the racing engines.

He progressed to assist the head engine builder (Michael Gasking) with assembly, dynamometer running of the engines and worked on BT19 (Jack’s ’66 championship winning chassis) when it was being prepared for the ‘620 Series’ 2.5 litre Tasman V8 for Jack Brabham to use at the ’66 Sandown Tasman meeting. He also worked with other project engineers on test and development of the range of engine components being manufactured at the various engine parts manufacturing factories of the Repco empire for fitment to the race engines.

These project engineering tasks continued for some years and included a 4 month transfer to England to work in some of the companies to which Repco was licensed.

By the mid 70’s Nigel was running the engine laboratory in Richmond, which had become the Repco Engine Technical Centre. In conjunction with the University of Melbourne he supervised a major Federal Government contract for the testing and evaluation of diesel and petrol engines running on alcohol fuel mixtures. He also spent some years as chief engineer of the engine parts plant at Richmond before returning to the engine laboratory, which became his base as Chief Engineer of Repco’s Engine Parts Divison.

He was closely involved with original equipment product development and sales to local car companies and travelled throughout Australia and New Zealand extensively giving product knowledge lectures and writing technical articles. He made a significant contribution to the engine component design sections in the Repco Engine Service Manual (later to be reissued as the ACL Engine Manual).

The division was sold to a management buyout group in 1986 and became ACL (Automotive Components Limited). Nigel was one of the 9 in the buyout group and continued in the role of chief engineer until his retirement in 2005.

matcih sr4

The Matich SR4: One of Australia’s most famous and successful racing cars. Here Matich slices the car, with typical pinpoint accuracy into Warwick Farm’s Esses, 4 May 1969. Interesting in an historic context, hi-wings were banned during the Monaco GP weekend of 18 May…

Overview..

 Frank Matich had already won the Australian Sports Car Championship four times by the time he commenced work on the SR4; he won in a Lotus 19 in 1964, Elfin 400/Traco Olds in 1966 and in the Matich SR3 in 1967/8.

He had competed in the USA in 1967 as recounted earlier. His dominance of sports car racing in Australia was legendary and led to the catchphrase: ‘Doing a Matich’. (Pole position, winning, fastest lap time and lap record). Frank’s record with the SR4 is impressive.  He raced at Bathurst, Calder Park, Catalina Park, Sandown, Surfers Paradise and Warwick Farm.

SR4 took nineteen starts for 15 wins, one second with eight outright lap records and winner of the 1969 Sports car Championship.

SR4 Owners..

Rothmans Team Matich (1968-1970), Repco (1970-1986) Automotive Components Limited (1986-2005) and Nigel Tait (from 2005)

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SR4 in Repco’s Maidstone, Melbourne workshop in 1971, great shot of the nose/spoiler assy and carefully ducted, both ‘in and out’ of radiator, suspension as per text. Note front lights mandated by Oz rules (Jay Bondini)

Build, sponsorship and first ownership..

It’s not certain who actually owned the SR4 as built. It was constructed at Frank Matich’s workshop in Sydney and as far as I know largely funded with sponsorship from Rothmans (tobacco) and perhaps others. The engines belonged to Repco.

Some time after the first logbook was issued from CAMS it was mislaid and Frank wrote to apply for another, stating ownership as ‘Rothmans Team Matich’. In his book ‘Historic Racing Cars in Australia’ John Blanden wrote that ownership transferred to Rothmans while the car was still in competition, that’s the period from December 1968 to January 1970. It’s also known that Rothmans made a practice of owning the cars that Matich raced under their sponsorship.

The car was retired in early 1970 so that Frank could concentrate on F5000. Repco wanted the car to use as an advertising tool and in return, it is my understanding, that an arrangement was made for the car to be transferred to Repco’s ownership in return for ongoing supply of engines and sponsorship for F5000, these being made at the old Repco Brabham plant in Maidstone. (That’s where I started work for Repco in 1966 as a cadet engineer). This division was renamed Repco Engine Development Company (REDCo) under General Manager Malcolm Preston.

Frank Hallam, Repco Brabham’s General Manager, and incidentally my first boss, had by then been transferred to Repco Research, and one day acidly described to me his life out there as ‘a career careering between obstacles’. He wasn’t happy about being put out to pasture.

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Shot as above after delivery to Repco in Maidstone, Melbourne. Note wing spec then, it would be interesting to know which meetings it competer in this spec, noting changes were ongoing apart from those mandated by the FIA from the ’69 Monaco GP weekend, hi-wings banned from then (Jay Bondini)

Anyway, the car was sent down from Sydney to Repco in late 1970 (I was working for Repco in England at the time so can’t be sure of dates) and was first placed at the Repco Apprentice Centre in North Melbourne. Then it was sent to Maidstone to rest, for some years, in a room next to the REDC0 drawing office. It was in a forlorn state with an empty engine and at the time of little interest to Repco or anyone really.

Anyway once REDCo had closed down after F5000 had finished (at least for Repco) I had the car and all of the Repco Brabham/REDCo drawings and files and other hardware transferred to our Richmond engine laboratory that I supervised. Another division of Repco was to occupy the Maidstone building but not the two engine dynamometer cells, which I was to run, not very successfully as it turned out, on a commercial basis.

By that time Don Halpin had transferred from the Maidstone plant of Repco Engine Parts to our Richmond laboratory and he undertook a cosmetic restoration of the car so that Repco could use it for trade displays and shows etc. It was not a running vehicle at this stage since there was no engine, only a few parts to make it look OK.

Various divisions of Repco used the car for displays as intended and the car also spent quite some years on public display at the Birdwood Museum in the Adelaide Hills, and then the Auto Museum in Launceston, Tasmania.

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BP advertisement photo is pit straight, Sandown Park, Melbourne (BP)

From Repco to ACL..

During the early 80’s Repco underwent considerable change in its upper management and ownership. (You could read ‘corporate raiders’!). By about 1985 Repco had sold off some of its manufacturing divisions, Repco Research, the Brake and Clutch Division and the machinery manufacturing division and it became clear that manufacturing was of no interest to the Board. Clearly the factories manufacturing engine parts in Melbourne, Brisbane and Launceston were next to be offloaded. Indeed while the Repco Board instructed the Divisional General Manager of this division to advise his staff that it was not for sale, it on the other hand instructed him to find a buyer!

So in August 1986 a management buyout team comprising 8 of its senior staff (including myself), and our Divisional General Manager, purchased the whole division from Repco. At a price of $A28 million and with very little equity and huge borrowing, the team pulled off what was the largest management buyout of its type in the country’s history. There were almost 1,000 employees spread over 5 states. My role was to continue as chief engineer.

The new company adopted a name that was actually one of Repco’s 1960’s takeover targets, ACL, and the new company became ‘Automotive Components Limited’. (Repco had no need to use this name and allowed its use by us).

All of the assets of the then Repco Engine Division were transferred to the new company, these included the Repco Brabham BT19 and all associated drawings, items and trailer and also the Matich SR4 which was still in its cosmetically restored state. So the Matich became the property of ACL from August 1986.  ACL continued to display the car publicly including the museum in Launceston and other venues.

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SR4 in the Birdwood Museum, Adelaide Hills, at this stage the ‘cosmetic’ restoration had been done by Don Halpin as per text, car not ‘a runner’  (The Roaring Season)

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Niel Allen’s ex-Matich Elfin 400 Chev (named Traco Olds by Matich) ahead of FM’s SR4 and Bevan Gibson’s ill-fated Elfin 400 Repco, sadly Bevan died during this race, Easter, Bathurst 1969. This event is reported in full in the Elfin 400 article, a link for which is at this articles outset (Dick Simpson)

An engine was found..

Towards the mid to late 90’s with the growth of interest in historic racing there were numerous approaches made to ACL to buy it. These were made direct to the Board or sometimes to myself, and always we advised that the car was not for sale, but would be restored once an engine could be located.

Luckily that did happen. Aaron Lewis, who is prominent in historic racing circles and the owner of some magnificent cars, advised me that Les Wright of Sydney had a 4.2 litre Repco Brabham engine in his Brabham Buick. CAMS had advised that this was not the way the car was originally raced and that Les would need to remove the engine and obtain the correct Buick engine to obtain a CAMS permit to race the car. On behalf of ACL I bought the engine for $30,000. Les ran it on the floor and it worked pretty well so was transported to Melbourne. This was circa 2000.

At last we had an engine and I was able to have the car brought back to life. Jim Hardman (ex F3 racer, mechanic, engineer and builder of the superb Hardman F2 cars of 1980) undertook this restoration, which was essentially to make it mobile, look good and be safe for display and demonstration running.  This work was undertaken by Jim at his rented area within Heckrath Engineering in Cheltenham and paid for by ACL.

I sent the body to Richmond TAFE who had offered to spray it. It turned out to be a very poor job where even the colour was wrong and I had to engage a panel beater near us at Maidstone (Houdini) to do it again. More about the colour later.

Once in running condition at Heckraths Jim Hardman became the first person to drive the car for over 30 years. Albeit this was in Bricker Road, Cheltenham on a quiet weekend morning, a quick blast lest the local police took interest!  More ‘legal’ trials were held at Calder in outer Melbourne, with Jim doing most of the driving though I squeezed myself into it several times.

Subsequently the car was displayed many times from around 2002 to 2005, at Motorclassica, the Australian Grand Prix, various circuits and trade shows and even at a Repco function.

Jim made up a seat for me and I took it to several meetings at Eastern Creek, Winton, Phillip Island etc and we also used it as a display vehicle for our numerous company functions. When Jim drove it at Phillip Island it dropped valves in both heads (probably stones down the intakes) and we had to undertake a fairly extensive rebuild. (Not having wire screens on the inlet trumpets was a bad mistake, as others have also learned).

Assembling Repco Brabham engine

Repco engine assy area, Maidstone factory, Melbourne in early 1968, the engine towards the front is  a 3 litre ‘860’ F1 engine, behind are ‘760s’, capacities unknown (Repco)

Engines..

 The whereabouts of the original 5 litre ‘760 Series’ engine used when Frank Matich raced the car is unknown. I doubt that it came back to Repco. There is some suggestion that it resides somewhere as the base of a coffee table and I hold out hope that one day this engine might come to light, if only as an important part of the car’s history for the next generation.

4.2 litre: I’ve already explained how we came by the 4.2 litre engine ex Les Wright. The 4.2 litre ‘760 Series’ quad cam engines were made only for Indianapolis for Jack Brabham and for Peter Revson. I think there may only have been two or perhaps three, the records are not clear. The engine in the ex Revson BT25 of Aaron Lewis is undoubtedly the one from that car. Sir Jack Brabham told me that one of his engines used in his 1968 BT25 Indy car that he lent to Goodyear ‘disappeared’ and I have a feeling that the engine I have might be this one.

It is as original though as a result of the dropped valve at Phillip Island one of the bores had to be honed slightly oversize to remove some marking and hence the piston and rings in this cylinder are a little larger. Otherwise the engine is as run by Les and still has the same cams etc. It runs on Avgas. I use 50 cc of two stroke oil per 20 litres of Avgas for lubrication of the metering unit.

Its output would be around 550 BHP at about 8,000 RPM but I have never pushed it beyond 6,500 RPM. I have rebuilt it a second time just as a check and little work was needed.

Assembling valve train for quad cam Repco Brabham engine

Peter Reilly assembling an ‘860’ 3 litre F1 engine valve train assy, the engines problem area!, refer to the text, beautiful workmanship clear. ‘860’ the only gear driven cam engine, ’20 and 40′ Series driven by chain (Repco)

5 litre: Some years ago I discovered that I had enough parts from which to commence build of a 5 litre ‘760 Series’ engine. I had a block of the right type (to take the Cooper rings rather than head gaskets). Crankshaft Rebuilders made sleeves and a crankshaft, rods were made by Argo, pistons by Special Pistons Services and the heads that I had were completely rebuilt at Head Stud Developments. Luckily I had the gear casings all of the gears (the quad cam engines have gears, not chains) and a spare sump of the right type with integral oil pressure and scavenge pumps.

Build of this engine took me about 2 years including the time for manufacture of the parts by Crankshaft Rebuilders. A much larger than original torsional vibration damper was made for me by Tuffbond in Sydney.  Minimizing crankshaft torsional vibration protects the valve gear and camshafts etc. as well as being better for the crankshaft itself.

Actually the engines used by Frank were of 4.8 litre capacity, the bores being reduced slightly to overcome sleeve cracking due to being too thin. I have made my engine to true 5 litre capacity with the steel sleeves and was able this way to utilize off the shelf ring sizes. Also I had the rods made to 6” length which enabled the use of much shorter and lighter pistons in keeping with modern engine design practice.

The result is a very nice engine with noticeably more torque. Though I have not had it on a dyno it would no doubt see around 600 BHP, though as with the 4.2 I do not use any more than 6,500 at which point the cams are in and there is plenty for me!

The 5 litre encountered what I thought was a mild overheat at Geelong* in 2014 so I have rebuilt this over 2015/6. There was no bore damage but the crankshaft needed grinding and otherwise the engine is in good condition and ready now for further use.

*Note: I have learn’t that apart from needing a better bleed for the cooling system (now done) I have let the engine rev too slowly upon first start up. The water pump speed is only half engine revs so now I run the engine at 2,000 RPM from any cold start to make sure the coolant is flowing properly.

 Reverting to the 4.2 litre engine in Aaron Lewis’ BT25, it is currently in build and it would be nice to see it running. (at the time of uploading this article Aaron has run the car at Eastern Creek, Sydney) At this stage the two quad cam Repco Brabham engines (and now Aaron’s) that I have for the SR4 are the only Repco quad cams that run, anywhere.

I have nearly enough parts to commence a third engine build but this would have to be with a block that uses head gaskets and these would need to be re-torqued thus would need either a dynamometer run or engine removal from car after first run.  Or with luck I’ll find another Cooper ring type block.

Sale from ACL to Nigel Tait..

I was still hard at work as ACL’s Chief Engineer up until my retirement in July 2005. Consequently outings with the car and indeed also the BT19, were rare and had to fit in with my work rather than being at my will.

With retirement imminent it became obvious that with no one else at ACL interested in the two cars we’d have to consider their future. Repco had a first option to buy BT19 and it was decided to sell this back to them around June 2005, for $1.3M.  I had been looking after it since it was bought from Jack Brabham in 1970. Repco asked if I would continue to be its carer/minder, which I do to this day.

The Matich was to be sold and my bid was the highest, thus securing for me a car that i’d been looking after virtually since its acquisition by Repco. I paid my company $160,000 for it and the various spares and display material and engines, (including the 3 litre quad cam ‘850’ diagonal port engine). I also purchased the trailer that was made for us by MRT Trailers, for $10,000.

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Spaceframe chassis back at Jim Hardman’s shop after sand blasting and stove-enamelling (Tait)

As earlier mentioned the first restoration by Don Halpin was to allow the car to be on static display.The second, once we had the engine from Les Wright, was by Jim Hardman and resulted in the car’s first outing in 30 years.

Once I had purchased the car in 2005 Jim advised that we should undertake a complete bare frame restoration and rebuild. Jim still had the facility at Heckrath’s and i was able to devote some time to the menial tasks such dismantling, cleaning the frame ready for spraying and running around getting parts etc as needed.

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Chassis, big and butch to take the big Repco’s power and torque, quoted weights of ’68 McLaren M8A and Matich SR4 similar. Given the Repco engine was way lighter than the ally’ block Chevy of the M8A, the difference in weights is a bit of a mystery as Tait quotes the Matich bare frame at 38Kg (Tait)

 

 

Hardman replaced all of the aluminum skins, undertray, all firewalls etc and repaired and strengthened the frame as needed. In fact there was no real problem with the frame, one part of the outrigger on one side had partially cracked and the bar that was the top mounting for the seat belt upper harness was too small. Everything else was terrific. A great testament to its builder, Henry Nehrybecki.  I photographed all stages of the restoration and rebuild which took exactly 6 weeks from the May Winton meeting to being ready for Speed on Tweed later that year.

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Wishbone front suspension, coil spring/Armstrong damper and ventilated front discs, steering rack also in situ, Matich designed, CAC cast (Tait)

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Big radiator in place, 3 pot calipers are Girling (Tait)

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Front suspension, radiator and ducting detail, quality of workmanship clear (Tait)

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Heart of the matter in place as is Hewland LG600 ‘box, car first raced with a ZF. Rear suspension period typical; single upper link, lower inverted wishbone, coil spring/dampers (then Koni now Armstrong) and twin radius t rods for fore and aft location. Note big oil reservoir and beefy rear chassis diaphragm above ‘box (Tait)

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And now the body (Tait)

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Proud custodian Nigel Tait with SR4. Jim Hardman an outstanding race mechanic/engineer and car builder ‘in period’ and now a restorer of similar calibre (Tait)

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The view of FM’s SR4 derriere all the other drivers saw (Tait)

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Australian Champion driver John Bowe aboard SR4 at Calder (Tait)

Multiple Australian Champion John Bowe expressed interest in doing a track test for ‘Unique Cars’ magazine. This was shortly after our 2006 rebuild. He planned on a run at Calder for this but that day could not be scheduled as intended. Instead John’s first drive of the car ended up on the road circuit at Murwillumbah’s Speed on Tweed. Organised by Roger Ealand, who so sadly we have just lost, this event ran for several years and in fact culminated in its final event with a stage of the Repco Rally being held also on the same circuit, but at night.

John drove the car for its 4 or 5 runs but even after the first he requested some suspension changes, which had an immediate effect. Subsequently John’s planned track drive at Calder came off and he drove numerous laps following a camera car and some at speed. A successful day and John loved the car. His only request was for the height of front and rear to be changed to change the undertray height to be higher at the back to improve downforce.

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My Licence.

I have a level 2S licence. In my earlier days of racing it was the equivalent of a Level 1, but some 25 years ago I lost one eye resulting from an infection during a skiing holiday in New Zealand. That’s one reason why my driving is limited to display regularity and super sprint etc but the other reason is quite pragmatic; there are few drivers around, and I’m not one of them, who could handle this car to its full potential.  With over 600 BHP and a weight of just 625kg the car commands great respect.

elfin 400 bathurst

Start of the fateful race which took Bevan Gibson’s life, Easter, Bathurst 1969. Gibson in Bob Jane’s red #6 Elfin 400 Repco, Niel Allen #2 alongside in his Elfin 400 Chev and Matich to the right in the hi-winged SR4 (Wayne McKay)

Contact with Frank Matich..

 I took the car to Eastern Creek in Sydney on several occasions in the years before and after its bare frame restoration in 2006.

Frank was at some of these meetings and was delighted to see and hear it in action. He was full of praise for the standard of the restoration and for my efforts in bringing it back to life. We spent quite some time discussing technical aspects of the car and he noted that someone had replaced the Koni shock absorbers with Armstrongs, a pity he said because he set the Konis with very little bump and mostly rebound, something that I can’t do with the Armstrongs.  Frank was apologetic that somehow his people had done a cleanup in his factory and had discarded many spares including patterns and wheels etc that he would have given me. These were good conversations and it was fun also to meet his daughter Katrina and his granddaughter Paige and to have photos of all with the car. He said that he was glad the car was in good hands.

Unfortunately relations deteriorated somewhat in Frank’s latter years when he claimed that he had not sold the car to Repco and wanted it returned! This after a period of over 30 years since Repco’s acquisition during which there had been no communication from or to Frank and with the car having been through two changes of ownership.

Subsequently Frank’s attention was drawn to the reference in John Blanden’s book stating that ‘It initially ran with Rothmans signage and subsequently Rothmans acquired ownership of the car’.

 There was no further communication on this issue. It was disappointing but didn’t diminish my admiration for Frank as a brilliant driver and one of the great legends of Australian motor sport. To this day I can recall the car running at Sandown and steaming into Peter’s corner (I was an official there) with all brakes locked up, tyres smoking when the throttle had apparently stuck.  That was a great era.

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Matich ‘locks em up’, a stuck throttle the cause, on Sandown’s pit straight just before Peters/Torana corner in 1969 (Tait Collection)

Henry Nehrybecki..

Henry was the builder of the car, at least the chassis and suspension and no doubt he had a team of helpers. Indeed I’ve heard that some of the time during the build Henry was not well and Bobby Britton (of Rennmax Engineering) may also have been involved.

I had numerous discussions with Henry in the early days after we got the car going and took it to Eastern Creek. He was thrilled the car was back in action after being out of circulation for 30 years. A small coincidence is that Henry’s granddaughter Gabrielle lives in Melbourne and is in the same friendship group as my daughter and her friends.

Derek Kneller; ‘Henry drew and fabricated the chassis, the conceptual design of which was Frank’s and his, Bob Britton was also involved. The chassis was then transferred to Franks facility, the Castle Cove BP Garage in Eastern Valley Way, which comprised a ‘servo’, the race ‘shop and Firestone racing tyre warehouse. It was in late ’69 that FM switched from testing and selling Firestones to Goodyear’.

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John Mepstead and Matich ponder the SR4’s brakes in the Sandown paddock after its big brake lock-up. Mepstead an ex-Repco mechanic/engineer hired by FM to look after the car in ’69 (Tait Collection)

‘Peter Mabey assembled SR4 at Castle Cove, he had been with FM for some years including the SR3 race program in the ‘States. After that Peter looked after the Servo side of the business before returning to the race side of things on the F5000 program with me. SR4 was maintained and race prepared in 1969 by Tony Williams and John Mepstead on the chassis and engine respectively’.

Others to drive the Matich SR4..

Apart from Frank there have been no others to drive it in any competition except John Bowe and Laurie Bennett. We will not count my many demonstration drives, super sprints and regularity events and even in the Top Gear event at the Melbourne Showgrounds.

As earlier mentioned John drove it at Speed on Tweed just after its 3rd restoration. Laurie drove it at Mallala in one Super Sprint. His Elfin 600 had expired and I let him take it out. Effectively he won this having started last on the grid and passed all of the others by the last lap, while being stuck in 2nd gear.

Bill Hemming and David Hardman (Jim’s son) also enjoyed some practice laps at Mallala and Winton respectively. Also Brian Sampson who would have loved to own the car took it for a few laps at Winton after the third restoration. He really enjoyed it however we had a problem with a badly set up throttle mechanism which made it difficult to drive.

My beautiful picture

On the Calder dummy grid in 1969, #34 an Elfin Streamliner (Ian Pope)

The body was made in Sydney by JWF Fibreglass. It was not intended to be this way. The plan was for it to be made from aluminum and they went a long way towards completing this but the task became too hard and too slow. What had been made was used as a mould for the fiberglass body. This was one of the reasons the car didn’t go to the 1968/9 CanAm, the other was that Repco was late with the engine.

When we restored it at ACL it was strengthened with some extra layers internally as it was very flimsy and cracked in many areas. It’s a little heavier but still OK.

I’ve mentioned earlier the colour. After the debacle of the Richmond TAFE attempt we’d lost the original colour since every panel was by now the odd purple colour, so there was no colour match possible. Houdini Panels suggested an off the shelf colour common to a road car of the time and as it looked more vibrant and could be retouched more easily I chose this.

It appears there were two bodies, or at least two rear sections. When the car raced at the Easter Bathurst meeting Frank had the very high wing and it was attached to the rear hubs by uprights that went through holes in the body.  After Bathurst the car reverted to low wing, no wing and various iterations in-between, but always body mounted. The wing on the car now is about 300mm above the rear deck and I am not sure if the car competed in this way or if the wing was experimental in the latter stages of the car’s life with Frank.

Just last December (2015) I found another rear body section for the car. It came to light in an outer suburban junk yard along with the body from Colin Hyams’ T190 Lola F5000. How these came to be at this property is something we’ll never know. Anyway I bought the Matich rear body (for much more than it is worth), as it is definitely the one Frank used at Bathurst, with the holes for the wing supports and is the original dark blue. It still has the Repco and other stickers on it. I don’t intend to use this but it would fit straight on still having the original brackets.

Chassis number..

The chassis was number 07. When I decided to have a brass plate made I asked Henry if he knew what the chassis number was and he advised it was number 1 so I had the plate made this way. He was probably referring to the fact that it appears another chassis was made, very similar to mine, but never actually made into a car. So Henry was thinking about SR4 chassis of which mine was the first. I suppose I could re-engrave the plate on my car.

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SR4 in the Surfers Paradise paddock, note the car is now fitted with a Hewland LG500 ‘box rather than the ZF in the earlier rear shot (Tait Collection)

Gearbox..

 The car was made with a ZF. It seems the side plates of this gearbox were not strong enough and also the 4 speed Hewland LG500 that replaced it was more common at the time and ratio changes were easier. There is a reverse but to set up the adjustment to get this compromises engagement of the forward gears so it does not go into reverse at all. I don’t have any spare ratios. The only places 4th gear is used is at Eastern Creek, Calder, briefly, the back straight at Pukekohe, NZ and the Grand Prix circuit at Albert Park. Also Sandown and Phillip Island. Given a good straight the car would reach 200 mph.

Derek Kneller; ‘I helped fit the Hewland LG gearbox to SR4. We were converting Frank’s F5000 M10A McLaren to M10B spec, i built the first of these at McLaren’s before leaving the UK for Oz. A DG300 Hewland was fitted to the M10A, the LG was popped from the M10A into SR4. Henry Nehrbecki fabricated a new rear cross-frame with a bellhousing designed by us and cast by Commonwealth Aircraft Corporation in Melbourne, we made a pattern which we could adapt for a Chev or the Repco. The change in ‘box was around November 1969’.

Tyres..

Very early in the piece Kris Matich (of Goodyear in Sydney) tried to find tyres of the original size as raced by Frank but these were no longer available. I have used Avons, supplied by Russell Stuckey and they are F5000 fronts (with treads cut by Russell) and a sports car category treaded tyre imported from Japan. The sizes are: Front: 10.5/23/15 Rear: 15/26/15

These are a little smaller in outer diameter than raced by Frank and we have set the suspension up to suit. Any difference in ratio is of no consequence.

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FM after winning the ASSC round at Surfers Paradise on 18 May 1969, time for a new set of raceboots Frank! Note air reliefs atop SR4 RHS guard (Tait Collection)

Roll bar..

The roll bar height is too low for me since my seat was made for me to sit further away from the pedals. It was marginal in height for Frank. For my purposes it is OK but will need to be rebuilt in accordance with CAMS standards in due course. I think this will require a bare frame exercise.

Brakes..

These are as raced but I have slightly softer pads for quicker warm up. John Bowe felt that these might be too soft for serious racing.

Fuel tank..

The car was raced with a large bladder tank in the left pod. This was not serviceable, Jim Hardman made an aluminium tank of about 30 litres capacity and foam filled it. The car uses about 1 litre per kilometre so a larger tank would be needed for any serious racing.

Ignition..

A Lucas Opus system was on the 4.2 engine ex Les Wright though most likely Frank raced with a Bosch twin point distributor.  The Opus modules are no longer serviceable. John Heckrath made up a special distributor so the Bosch module could be hidden inside the Opus unit and this worked well. There was some initial hilarity when it was discovered that the donor distributor from a V6 Holden had the wrong number of teeth for a V8! (The timing was only ever right for the first few degrees of engine rotation and had to be retimed numerous times until the oversight was discovered). More recently Performance Ignition made up a Scorcher system and this now works perfectly albeit is not as the car was raced.

Cam covers..

The car raced with cam covers designated ‘REPCO’.  I built my 5 litre engine accordingly but the 4.2 litre engine, being ex Jack Brabham Indy, had ‘REPCO BRABHAM’ cast onto the top. I’ve chosen to leave it this way, i have spares of both types. (An early photo shows the car with Repco Brabham cam covers and also shows the ZF gearbox).

CAMS Certificate of Description (Australias more rigorous equivalent of FIA historic racing certification)..

For what I do with the car a C.O.D. is not needed but I was persuaded that it would be a good idea to have this so the car could be documented as raced, for future reference. A C.O.D. was obtained in 2015. It is # 0.040.03.02.

New Zealand

 I have taken the car to New Zealand twice, both times to Hampton Downs, and on the first occasion to Pukekohe as well. I was included in the demonstration events on each occasion and had plenty of track time with F5000’s and other sports cars. This was especially so at the most recent of the visits to Hampton Downs where there were so few of the big sports cars entered they needed me to make up numbers, at least in the practice, qualifying and even on the warm up lap of every race! The two events were to celebrate Bruce McLaren and Denny Hulme respectively.

Importantly the Matich ran very well and was popular with the locals.

 Future..

My plan is to continue with displays and demonstrations, regularity and Super Sprints as much as possible given my other passion, snow skiing. This sidelines me for most of the winter months in our small apartment at Mount Buller. I hold out hope that I can get the roll bar rebuilt soon, the 5 litre should go back in later this year and it would be nice to make another trip to New Zealand.

My longer term mission is to see the car in the hands of someone with the necessary technical ability, driving skill and passion to continue to present the car, whether racing or not, in the manner that reflects the great legacy for its terrific driver, Frank Matich and Repco for its amazing engines.

Nigel Tait June 2016

MatichSR4promocardtext

This card, and the shot just below was produced by Repco and handed out at race-meetings trade shows and the like in period (Tait)

Matich SR4 specifications…

Engine: Repco Brabham quad cam. Repco designed and manufactured ‘700 Series’ aluminium crankcase/block cast at Commonwealth Aircraft Corporation, Fishermans Bend, Melbourne.

Four valve per cylinder, DOHC, gear driven,  ’60 Series’ aluminum heads designed by Repco and cast at Castalloy in Adelaide.

Lucas mechanical fuel injection system with metering unit driven from the same jackshaft which describes the distributor Port mounted Lucas injectors running at 100psi. Throttle slides for engine control.

Ignition: car was originally raced with a Bosch twin-point distributor, later Lucas Opus and now Scorcher with reluctor in the distributor

Lubrication: pressure and scavenge pumps in the sump interconnected with short shaft, driven from the crank. Oil tank external

Crankshaft made by Crankshaft Rebuilders, Forged pistons by Special Pistons Services, Connecting rods made by Argo, NSW.

Capacity: 4.2 litre ‘Indy’ version Bore: 96mm Stroke 71.9mm

Capacity: 4.8 litre as raced by Matich in 1969: Bore 96.5mm, Stroke 82mm

Capacity: 5 litre Ian Tait built: Bore 96.5mm Stroke 86mm

Chassis: Tubular steel spaceframe: Weight 38 kilograms (bare frame)

Suspension: Front; Lower wishbone, upper camber arms with radius rod. Rear; Reversed lower wishbone with upper camber arm and upper and lower radius rods. Shock absorbers: now Armstrong but raced originally with double-adjustable Koni’s

Steering: Matich manufactured rack and pinion, cast by CAC. Uprights: Matich design and manufactured, steel fabrications

Brakes: Girling, 3 pots per wheel

Wheels: Matich design cast magnesium, front 10.5 by 15”, rear 17” by 15”

Tyres: Avon, front 10.5” by 23” by 15”. Rear 15” by 26” by 15”

Track: front 57”, rear 60”, wheelbase 90”

Body: Fibreglass, manufactured by JWF in Sydney.

Matich SR4 photo from Ian Pope

How competitive would the SR4 Repco have been in the 1968 Can Am Series?…

In ’67 the dominant McLaren M6A weighed 590Kg/1300lbs and was powered by a 6 litre 530bhp Chevy, the ’68 M8A by a 7 litre 620bhp alloy block Chev, the car weighed circa 1350lbs.

On the face of it FM’s ‘760 Series’ 5 litre, 4 valve, DOHC  Repco V8 toting about 580 bhp, the car quoted at 1361lbs would have been ‘in the hunt’. Certainly in relative terms SR4 would have been more competitive than the ‘620 Series’ 4.4 litre, 2 valve, SOHC 400bhp powered SR3 was in 1967.

Whilst the Repco V8 was giving away some power to the Chev, the car similar in weight to M8A, the Matich was potentially a better handling car than M8A given the distribution of the weight. The Repco alloy V8 weighed about 380lbs, the Chev lump circa 550lbs. There was no question about the handling of the Matich cars; ask Chris Amon who’s beautiful handling P4/CanAm 350 Fazz V12 was beaten by Matich in SR3 soundly on every occasion they met during the Australian Tasman rounds in the summer of ’68.

The engines had to last the 200 miles of a CanAm event of course, the Repco ‘860 Series’ F1 engines having major problems in 1968, mainly valve gear related. RBE Project Engineer Norman Wilson’s account of the engine problems in F1 in 1968 is as follows; ‘On a visit to Cosworth after the 860 engine problems Cosworth partner, Mike Costin, said that he realised what our problem was with the valve gear, that it was torsional vibration’.

‘This is where the project started to get unravelled. Frank (Hallam, GM of Repco Brabham Emgines) had sort of admitted the problem but at the time i think Frank had just about left, and Charlie Dean who replaced him wouldn’t understand that the problem was a torsional vibration problem. It was wrecking the cam followers. And the solution to the problem was fairly simple. All we had to do was modify the cam drive like the Cosworth Ford DFV engine and we could have fixed it’.

‘What happens is at certain speeds the front of the camshaft will tend to go a little bit like a tuning fork and as it rotates this front of the crankshaft oscillates back and forth and this oscillation is transferred up through the timing gears. It was making two of the camshafts do the same thing. So when the cam lobes were going around they were ruining the cam followers. The Cosworth has a little spring gizmo in the first timing gear to absorb this so it is not transmitted through the whole system. And Frank realised we needed something like this and we were working on doing that when Charlie Dean arrived on the scene and said it was a lubrication problem.’ This was after the end of the 1968 F1 season mind you, Hallam resigned after Deans arrival, after that disastrous season.

The ‘760 Series’ 4.2 litre, 4 valve, DOHC Repco V8 Indy variant with the same block and heads as the 5 litre finished the Indy 500 in 1969, Peter Revson’s Brabham BT25 finished 5th in the race won by Andretti’s Hawk Ford. Critically, Peter Revson took the only international win for a ’60 Series’ engine when we won the Indianapolis Raceway Park road event in his Brabham BT25 Repco on 27 July 1969.

None of these engines were fitted with the torsional vibration damper or spring gizmo to which Wilson refers. Its said the the bigger ‘760’ engines were simply not revved as hard as their F1 liddl’ ‘860’ brother thereby avoiding the oscillation rev range which was problematic.

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Denny Hulme, McLaren M8A Chev, Laguna Seca 1969 (unattributed)

For Australian enthusiasts a great ‘mighta been’ is how FM would have gone against the mighty papaya ‘Big Macs’ in 1968?…

Would the SR4 have been quick? You betcha, much faster than SR3. Would the ‘760 Series’ engine have finished 200 mile races? Yes again if the similar Indy variant results in ’69 are a guide. Could SR4 have achieved CanAm podiums in ’68?, probably yes.

Could he have won a race? Maybe, if the planets were aligned noting that year the ‘dynamic duo’ didn’t win two rounds; John Cannon took a great victory in the wet in an old M1B McLaren at Laguna and Mark Donohue at Bridghampton in the Penske M6B when both Bruce and Denny had major engine failures. Could FM have prevailed at these events? Sure, SR4 was quick enough to knock both car/driver combinations off.

‘If yer Aunty had balls she’d be yer Uncle’ of course, ifs, buts and maybes mean nothing in motor racing, as in life. The chassis was late. The engine was late. FM didn’t contest the ’68 CanAm and as a result we were all deprived of seeing Matich take on Bruce, Denny and the rest of the CanAm circus all of whom he knew and respected well.

So Frank raced the car in Oz in ’69, crushed the local opposition and then moved into F5000 supported by Repco…

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Rothmans brochure featuring both the old, SR4 Repco and the new, McLaren M10A Chev F5000 in 1969 (Tony Johns via Nigel Tait)

The obvious question is, having missed the ’68 series  why didn’t the car contest the 1969 CanAm instead of being ‘King of The Kids’ in Oz?..

The answer is simple, the Repco Brabham engine program was over, Jack raced a Cosworth DFV in F1 in 1969, the final races in that partnership the Indy races in 1969.

The Repco board decided to close down Repco Brabham Engines Pty. Ltd, there is no certainty Repco would have committed to F1 in 1969 even had Jack wanted them to. Cost was a big issue for Repco throughout 1968, the failure of the engines that year made it easier to withdraw, particularly given the sort of investment which would have been needed to match the reliability and power of the Ford Cosworth DFV. Its impotant to remember that Rindt put ‘860 Series’ F1 powered Brabhams on pole twice in ’68. The 3 litre ‘860’ Repco was potent! With further development there is no reason the ‘860’ F1 engine could not have won races, it proved its speed in Rindts hands in ’68 if not its reliabilty. And every Tom, Dick and Harry raced DFV’s in ’68; McLaren, Lotus and Ken Tyrrell’s Matra International team, pole amongst that lot was an achievement, the Ferrari’s also quick that year.

So, whilst Repco were happy to provide Matich with an engine, they would not back an assault in the US with the resources required. Matich employed ex-Repco engineer John Mepstead to look after SR4 during ’69, he wasn’t provided by Repco. Matich didn’t have the funds to race in the US and had already acquired an M10A Chev McLaren F5000 car in advance, well in advance of CAMS decision to agree the next ANF1 as F5000. 2 litre F2 was the alternative.

There was some ‘dogs bollocks’ from the Matich camp at the time about ‘multi-valve’ engines not being legal in the ’69 CanAm which is rubbish, obfuscation. Count the number of Ferrari’s alone which ran that year, the last time i looked they weren’t powered by pushrod OHV V8’s.

Repco’s commercial interests were best served, they quite rightly believed, by building an F5000 variant of the 5 litre Holden V8 to participate in this rapidly growing category. The engine was an immediate success, Matich won the 1970 Australian Grand Prix in a McLaren M10C Repco that November.

There was not the funds to race an SR4 ‘Stateside, customer F5000 engines were a better commercial proposition for Repco and so an interesting and immensely successful, Repco Brabham Engines Pty. Ltd. chapter of Repco history ended, with a big, quad cam 5 litre bang mind you!

As an aside the last championship won by an RBE engine was Henry Michell’s victory in the 1974 Australian Sportscar Championship aboard an Elfin 360 powered by an ex-Tasman RBE ‘730 Series’ 2.5 litre V8…

The SR4’s 1969 Australian Competitor Set…

The sinfully sexy, wedgy, state of the art, but oh-so-twitchy Elfin ME5 Chev of Niel Allen at Warwick Farm in 1969, below.

Garrie Cooper’s latest big car had a nice, stiff aluminium monocoque chassis but the short wheelbase device, even with Allen at the wheel, very much Matich’s equal in F5000 was never a winning car and with only 480bhp was ‘gutless’ compared to Matich’s 580! Never thought i would say that about a 5 litre injected Chev!

sr me5

(oldracephotos.com)

Bob Jane below in the sensational McLaren M6 Repco at Hume Weir in 1969, le patron at the wheel of the car raced mainly by John Harvey including the Australian Sportscar Championship in 1971/2. Also Repco powered but ‘only’ an SOHC 5 litre ‘740 Series’ V8, Harvey was very much an ace but the car not on the same page as Matich’s beastie. Its time would come…but only after SR4 was popped away as a museum piece within months of its championship win.

sr jane

(oldracephotos.com)

Don O’Sullivan in the hi-winged Matich SR3 ‘3’ Repco slicing into Warwick Farm’s Esses in early 1969. Behind him is Niel Allen in the ex-Matich Elfin 400/Traco Olds, now 5 litre Chev engined car. The chassis of the SR3 was either identical to or very, very similar to Cooper’s Elfin 400 design.

sr sr3

(oldracephotos.com/Dick Simpson)

Matich Cars: The Chassis List…

Matich listed ‘his cars’ by chassis number as below. After discussion with Frank Matich, Darryl Duff who owned one of the SR3’s at the time in the early eighties prepared a document listing ‘Franks’ sportscars. A truncated summary of it is set out below. To that I have added Matich’s single-seaters, all F5000’s the source, Derek Kneller, his engineer/mechanic throughout the entire F5000 period;

sr3 wf

Matich in SR3 ‘3’ Repco ‘620 Series 4.4 litre V8, the last one built, at Warwick Farm in 1968, this is the chassis with which he belted Chris Amon in the ’68 Tasman support rounds, Amon in David McKays/Scuderia Veloce Ferrari P4/Can Am 350 (Dick Simpson)

1.Sports Cars: All of multi-tubular spaceframe construction

#1 Lotus 19B Climax: (the second of FM’s 19’s, highly modified with many Brabham bits and ultimately destroyed in FM’s big ’65 Lakeside shunt)

#2 Elfin 400 Olds: (aka ‘Traco Olds’ first raced Sandown early ’66, still exists)

#3 SR3 (1) Olds/Repco (still exists) Built with 5 litre Traco/Olds, ZF 5 DS-25 ‘box

First race Warwick Farm early ’67, won ’67 Victorian (Sandown) and NSW (Catalina Park) sportscar championships and Australian Tourist Trophy at Surfers Paradise. To Marvin Webster, California, sans engine in June 1967. Tony Settember raced the car for Webster.

#4 SR3 (2) Repco (still exists) RBE ‘620 Series’ 4.4 litre V8 # ‘RB620E22’, from late 1969 Traco/Olds 5 litre from ex-SR3 (1), ZF DS25 ‘box

Built, sold and exported to Kent Price, California US, first raced 3 September 1967, Road America, Elkhart Lake by Matich. Its only US race. Returned to Oz, it was sold on Price’s behalf, by Matich to Malcolm Bailey in 1969. Bailey fitted the ex-Elfin 400/Traco Olds/ SR3 (1) V8 from Niel Allen to the car.

#5 SR3 (3) Repco (still exists) RBE ‘620 Series’ 4.4 litre V8 engine # ‘E25’, ZF 5 DS-25 ‘box

First race by Matich, 17 September 1967 Bridghampton, raced in Oz later in ’67. Won RAC Trophy and Australian Tourist Trophy at Warwick Farm and Mallala respectively in 1968. This is the chassis which beat Amon’s Ferrari P4/CanAm 350 throughout the ’68 Tasman support races. Sold to Don O’Sullivan late in ’68

#6 SR4 Repco: (still exists, ’68 intended CanAm contender, late, only raced ’69 in Oz, won ASSC that year)

#7 SR4B Ford/Lotus twin-cam (still exists, customer car built for John Wood)

image

Matich A51 Repco on the Watkins Glen pit row in 1973 (D Kneller)

2.F5000’s: All aluminium monocoques

Note The Matich Team reskinned their McLaren M10B Repco tub after its Oran Park 1971 practice shunt, their first monocoque experience. Six virtually identical tubs were built by Matich/Commonwealth Aircraft Corporation and built up as follows;

#8 A50 Repco Chassis # ‘001/002’ (1971 AGP and 1972 Gold Star winner, still exists)

#9 A50 Ford # ‘003’ (exported to the US, bits incorporated in sportscar) 1972

#10 A50 Repco # ‘004’ (customer car, John Walker ’73 US L&M later to Jon Davison, still exists)

#11 A51 Repco # ‘005’ (US ’73 L&M Series sold to J Goss, converted to A53 spec, ’76 AGP winner, still exists)

#12 A51/52 Repco # ‘006’ (US L&M Series as A51 converted to A52 spec back at Brookvale in time for the Surfers Gold Star round that September, destroyed in a Warwick Farm testing accident shortly thereafter driven by Bob Muir, scrapped)

#13 A53 Repco # ‘007’ (’74 Tasman car sold to J Goss after FM retirement, still exists)

On the basis of the above the Matich Team built 11 cars; the list above less the Lotus 19B and Elfin 400 which were built in Cheshunt, London and Edwardstown, Adelaide respectively.

FM’s logic of including the Lotus and Elfin as ‘his cars’ is not spelt out in Duff’s document but I suspect FM’s thinking was that he modified the cars to such an extent that they were more ‘Matich’ than Lotus/Elfin which may be true of the Lotus but ‘praps not the Elfin… Both these cars are covered in my ‘Elfin 400’ article the link of which is early in this article.

In Period Race Footage…

SR3.

SR4.

Shot below by Dale Harvey and is at Catalina Park in the Blue Mountains, not Warwick Farm.

Etcetera…

sr 4 drawing

Racing Car News June 1968 (Dalton)

Matich SR4 RCN cover (2)

Racing Car News cover July 1968 (Dalton)

wf poster

1970 Frank Matich Vicki Fry

1970 shot of FM in natty check strides, Vicki Fry and journalist and later motor racing publisher, Chevron Group founder Ray Berghouse. Hewland box missing, nice shot of suspension detail (Ray Berghouse)

Special Thanks…

To Nigel Tait for entrusting me with his manuscript

Derek Kneller for his recollections of the 1969/70 period at Team Matich

Credits…

Nigel Tait Collection, Dick Simpson, oldracephotos.com, Repco Ltd, Dave Friedman Collection, Ian Pope, Jay Bondini, The Roaring Season, Derek Kneller, Dale Harvey, Peter Ellenbogen, Stephen Dalton Collection, Ray Berghouse

Tailpiece: Matich is his local ‘backyard’, aboard the SR4 Repco, Warwick Farm’s Esses, now ‘Bell Star’ equipped, 1970…

mat wf

(oldracephotos.com/Dick Simpson)

 

brabham op circuit

(R Rice)

Jack Brabham shakes down his 1968 Tasman contender the Brabham BT23E Repco for Sydney’s media at Oran Park, 14 February 1968…

Nestled in the back is Repco’s latest ‘RB740’ 275bhp 2.5 litre V8, the Tasman variant of Brabham’s successful 1967 F1 3 litre (330bhp) engine. Denny Hulme took the title from Jack in a BT24.

jack, op

Brabham in the OP pitlane February 1968 (R Rice)

Jack raced the car only at Warwick Farm and Sandown in a very limited ’68 Tasman campaign. The car stayed in Australia; purchased by Bob Jane it was raced by John Harvey, John lucky to survive a huge accident at Bathurst in his first drive of the car after a raer suspension failure. Eventually converted to an F2 car with a Ford twin-cam engine the car was restored in the early-eighties and soon after sold overseas.

barbham op

Jack Brabham at Oran Park, Sydney 1968. He might have raced a Holden Touring car there in the mid-seventies but didn’t in his ‘heyday’. Built in the ’60’s 60Km west of Sydney near Camden, OP was extended in 1974 hosting the F5000 1974 and 1977 AGP’s. Subsumed by Sydney’s western sprawl ‘Oran Park Town’ will house around 25000 people and is in process (R Rice)

bt 23e wf

(Brian McInerney)

Brabham in BT23E in the Warwick Farm pitlane several days after the cars Oran Park debut. The car in front of Jack’s is Pedro Rodriguez’ BRM P261, behind him is the nose of Piers Courage’s McLaren M4A Ford FVA F2 car, third in the race.

Jack was 7th in the ‘Warwick Farm 100’ on 18 February Jim Clark ran away with the race from teammate Graham Hill’s identical Lotus 49 DFW.

Click here for an article on this meeting;

https://primotipo.com/2015/04/14/warwick-farm-100-tasman-series-1968/

At Sandown on 25 February Clark again won the race and the title, Jack’s Repco engine failed. It was a bit of a portent of the year he and Jochen Rindt were to experience with Repco’s, Cosworth DFV challenging new quad-cam 32 valve RB860 V8 which was as problematic as its RB620 and 740 brothers had been reliable…

Credit: R Rice, Brian McInerney, Wirra

Tailpiece: Jack’s BT23E cruisin’ the Warwick Farm paddock…

brabham bt 23e

Brabham, Brabham BT23E Repco, Warwick Farm Tasman meeting 1968, all gorgeous in its turquoise/gold stripe livery (Wirra)