Repco is an Australian automotive engineering/retailer company. Its name is an abbreviation of Replacement Parts Company and was for many years known for reconditioning engines and for specialised manufacturing, for which it gained a high reputation. It is now best known as a retailer of spare parts and motor accessories.
In September 2001 Repco was purchased by a private equity consortium, before again becoming a listed company, this time as a dual listed company on the ASX and New Zealand Exchange.[5][6] Following acquisition of all shares by CCMP Capital in December 2006, Repco was again delisted.[7][8] On 1 July 2013, Repco and the entire Exego group (consisting of Ashdown-Ingram, Mcleod Accessories and Motospecs) were acquired by Genuine Parts Company.[2][9]
In 1964 the Australian/New Zealand Tasman Series was created with a 2,500 cc capacity limit applied to engines. Jack Brabham approached Repco to develop a suitable engine, and together they decided to base the SOHC design on Oldsmobile Jetfire 215ci block with six cylinder-head studs per cylinder. Combined with a short stroke flat-plane crankshaft, Repco designed cylinder heads, camshafts and two-stage chain/gear cam drive, a 2.5 L engine was built in 1965 with its cylinder head cast by Commonwealth Aircraft.
In 1963 the international motor racing body, the FIA, announced that the maximum engine capacity for the Formula One category would be doubled to threelitres to start from the 1966 season. Despite calls for a "return to power" having been made, few teams were prepared as the main engine supplier in the UK, Coventry Climax, decided to get out of race engine building.[14]
Jack Brabham used his friendship with engineer Phil Irving at Repco. He proposed they design and build a 3 L version of the 2.5 L engine by using a longer stroke flat-plane crankshaft.
The Repco board agreed to his proposal in light of the expected rival 2.75L Coventry Climax FPFDOHC engine being of four-cylinder configuration deemed to be near-obsolete, and the plan to build the Cosworth DFV (revealed at the end of 1965 by Ford, its sponsor) was not known yet. A small team at Repco under Phil Irving developed the F1 engine, fitted with two valves per cylinder SOHC heads from the 2.5L version.
The first advantage of this Repco 620 V8 was its compact size and lightness, which allowed it to be bolted into an existing 1.5-litre Formula One chassis. With no more than 310bhp (231kW), the Repco was by far the least powerful of the new 3-litre engines, but unlike the others it was frugal, light and compact.[15] Also unlike the others, it was reliable and due to low weight and power, the strain on chassis, suspension, brakes and tyres was low.[16]
This engine being based on British/American Rover V8/Buick 215 block[17] is a common misconception. The Oldsmobile version of this engine, although sharing the same basic architecture, had cylinder heads and angled valve covers designed by Oldsmobile engineers to look like a traditional Olds V8 and was produced on a separate assembly line. Oldsmobile's intention to produce a higher-powered, turbo-charged Jetfire version led to significant differences from the Buick 215, primarily in cylinder head design: Buick used a 5-bolt pattern around each cylinder where Oldsmobile used a 6-bolt pattern. The sixth bolt was added to the intake manifold side of the head, one extra bolt for each cylinder, meant to alleviate a head-warping problem on high-compression versions. This meant that Buick heads would fit on Oldsmobile blocks, but not vice versa. Changing the compression ratio on an Oldsmobile 215 required changing the heads, but on a Buick 215, only the pistons, which was less expensive and simpler. General Motors later use of parts diagrams drawn for Oldsmobile in Buick parts catalogue showing a six-stud cylinder block sowed further confusion.[citation needed] Later Rover versions of the aluminum block and subsequent Buick iron small blocks went to a 4-bolt-per-cylinder pattern.[relevant?]
Four world titles for the single-camshaft 16-valve
In 1966, the Repco engine was good enough to score three poles for Jack Brabham. In his one-off BT19, it helped him get four consecutive wins and both titles in the nine-race-long season, a unique accomplishment for a driver and constructor. This was his third title.
The 2,995.58 cc V8 Repco had a bore and stroke of 3.50 × 2.375" (88.9 × 60.3mm). Initially it gave about 285bhp (213kW; 289PS). A test-bed figure of 315bhp (235kW; 319PS) at 7,800 rpm with 230lb⋅ft (310N⋅m) torque at 6,500 rpm was obtained. In race trim, about 299bhp (223kW; 303PS) was available. In 1967, the bore and stroke remained unaltered. In that year, 330bhp (246kW; 335PS) bhp at 8,500 rpm was often quoted. A test-bed figure of 327bhp (244kW; 332PS) at 8,300 rpm was recorded. For 1968, a 32-valve version with 400bhp (298kW; 406PS) at 9,500 rpm was planned. Only about 380bhp (283kW; 385PS) at 9,000 rpm was achieved.
In 1967 the competition had made progress. Repco produced a new version of the engine, the 700 series, this time with a Repco designed block. Brabham scored two poles early in the year, but then the new Ford Cosworth DFV V8 appeared in the Lotus 49, setting a new pace with its 410hp (310kW) at 9,000 rpm, with Jim Clark and Graham Hill taking all poles in the rest of the season. As the Lotus was still fragile, the Brabham drivers scored two wins each. Brabham used new parts on his cars, which was not always helpful, so Denis Hulme collected more results and the title, followed by Brabham himself, who again won the constructors' title.
The double-camshaft 32-valve
The new Ford engine, which was made available to other teams in 1968 also, convinced Brabham that more power was needed. With hindsight Brabham commented that the single cam motor's reliability may have been enough to supplant the more powerful Cosworths as late as the 1968 season. A new version of the Repco V8, with gear-driven double-overhead camshafts and four valves per cylinder, was produced for 1968 to maintain its competitiveness. A figure of 400bhp (298kW; 406PS) at 9,500 rpm was targeted but only about 380bhp (283kW; 385PS) at 9,000 rpm was achieved. The season was a disaster as it proved very unreliable due to insurmountable valve gear unreliability. There was also a 4.2-litre derivative for the Indianapolis 500. Jochen Rindt, who had moved to Brabham at the wrong time, managed to score two poles and two podiums that year, while Brabham himself collected only two points. The Repco project had always been hindered by the lengthy lines of communication between the UK and Australia, which made correcting problems very difficult. Repco, having spent far more money than originally envisaged and having sold very few customer versions of its engine, stopped the project.
For 1969, the works Brabham team and most of the private Brabham entries also used the ubiquitous Cosworth powerplant. A pair of older Brabham-Repcos were entered in the season opening 1969 South African Grand Prix by local drivers Sam Tingle and Peter de Klerk, but no points were scored on the engine marque's last appearance in the world championship.
Also, LDS fitted with Repcos were used in the South African Grand Prix in the late 1960s, as well as in the national F1 series there.
Other racing
Repco Brabham 760 series 5-litre quad cam V8 engine in the Matich SR4 sports car
Repco had been involved in Australian motor racing many years prior to the association with Brabham. Most famous had been development of the engine of the series of Maybach Specials in the 1950s to various wins including the 1954 New Zealand Grand Prix.
The Brabham-Repco project was initially aimed at the Tasman Series, where Coventry-Climax's obsolete FPF four-cylinder engine was dominant in the mid-1960s. The 2.5-litre version of the Repco V8 was never very successful in this series, initially producing no more power than the FPF. It did, however, record one Tasman Series round win with Jack Brabham driving his Repco powered Brabham BT23A to victory in the 1967 South Pacific Trophy at the Longford Circuit in Tasmania.
Brabham-Repco's were also prepared and entered in the 1968 and 1969 Indianapolis 500. In 1969, Peter Revson finished fifth in such a car. He also won a USAC race in the same year.
Further versions of the V8 engine were produced, including a 4.3-litre variant for sports car racing and a turbo-charged version intended for United States Automobile Club races. Neither version met with any international success, the turbo in particular being labelled 'Puff the Tragic Wagon' by its development team due to its lack of horsepower (compared with "Puff, the Magic Dragon").
Repco Brabham badge on the nose of a Repco Brabham BT6 racing car
When Jack Brabham began building racing cars in England he named his cars Repco Brabhams,[18] the result of a sponsorship deal between Brabham and Repco.[19] This name was applied regardless of the engine used,[20] and the arrangement existed through to the end of the 1960s.[21] The agreement saw Repco's international marketing of its automotive parts and service equipment supported by Brabham's racing achievements.[20]
Repco-Holden Formula 5000 engine
Repco also developed and built the Repco-Holden Formula 5000 engine for Formula 5000 racing. Repco used the block and head castings of the Holden 308 V8 engine as its basis,[22] but it featured many modifications including Lucas fuel injection, dual-coil Bosch ignition and more than 150 special components designed by Repco.[23] The engine first tasted success in the 1970 Australian Grand Prix that was won by Frank Matich driving a Repco-Holden powered McLaren M10B.
By 1976, power for the 5.0 L Repco-Holden V8 was rated at approximately 500bhp (373kW; 507PS). This compared to approximately 520bhp (388kW; 527PS) for the other main engine in the Australian Formula 5000 and Sports Sedans categories, the 5.0 L Chevrolet V8.
Due to the success of the Repco-Holden V8, Holden enlisted Repco to carry out the development work (on the dynamometer only, according to Holden Dealer Team boss Harry Firth) on Holden's 308 engine for its Torana SL/R 5000 that was released in 1974. Firth believed that developing the engine on the dyno and not on the race track saw continual problems for the engine such as oil surge—especially in touring car racing. He also claimed to have already cured the oil problems while developing the still-born Torana GTR XU-1 V8 in 1972 and that Holden ignored his warnings about the Repco engine.
The list of Repco-Holden's Formula 5000 engine race, championship and series wins includes:
Cosworth is a British automotive engineering company founded in London in 1958, specialising in high-performance internal combustion engines, powertrain, and electronics for automobile racing (motorsport) and mainstream automotive industries. Cosworth is based in Northampton, England, with facilities in Cottenham, England, Silverstone, England, and Indianapolis, IN, US.
Marcos Engineering was a British sports car manufacturer. The name derives from the surnames of founders Jem Marsh and Frank Costin.
The Holden Torana is a mid-sized car that was manufactured by Holden from 1967 to 1980. The name apparently comes from a word meaning "to fly" in an unconfirmed Aboriginal Australian language. The original HB series Torana was released in 1967 and was a four-cylinder compact vehicle closely based on the British Vauxhall Viva HB series of 1966–1970.
Coventry Climax was a British manufacturer of forklift trucks, fire pumps, racing engines, and other speciality engines.
The Rover V8 engine is a compact OHV V8 internal combustion engine with aluminium cylinder block and cylinder heads, designed and produced by Rover in the United Kingdom, based on a General Motors engine. It has been used in a wide range of vehicles from Rover and other manufacturers since its British debut in 1967.
The Buick V6 is an OHV V6 engine developed by the Buick division of General Motors and first introduced in 1962. The engine was originally 198 cu in (3.2 L) and was marketed as the Fireball engine. GM continued to develop and refine the 231 cu in (3.8 L) V6, eventually and commonly referred to simply as the 3800, through numerous iterations.
The DFV is an internal combustion engine that was originally produced by Cosworth for Formula One motor racing. The name is an abbreviation of Double Four Valve, the engine being a V8 development of the earlier four-cylinder FVA, which had four valves per cylinder.
The Oldsmobile V8, also referred to as the Rocket, is a series of engines that was produced by Oldsmobile from 1949 until 1990. The Rocket, along with the 1949 Cadillac V8, were the first post-war OHV crossflow cylinder head V8 engines produced by General Motors. Like all other GM divisions, Olds continued building its own V8 engine family for decades, adopting the corporate Chevrolet 350 small-block and Cadillac Northstar engine only in the 1990s. All Oldsmobile V8s were assembled at plants in Lansing, Michigan while the engine block and cylinder heads were cast at Saginaw Metal Casting Operations.
The Buick V8 is a family of V8 engines produced by the Buick division of General Motors (GM) between 1953 and 1981. All were 90° water-cooled V8 OHV pushrod engines, and all were naturally aspirated except one turbocharged version of the 215.
Motori Moderni was a Formula One engine manufacturer from 1985 through 1987. It was established in Novara by Italian engine designer Carlo Chiti.
Formula 5000 was an open wheel, single seater auto-racing formula that ran in different series in various regions around the world from 1968 to 1982. It was originally intended as a low-cost series aimed at open-wheel racing cars that no longer fit into any particular formula. The '5000' denomination comes from the maximum 5.0 litre engine capacity allowed in the cars, although many cars ran with smaller engines. Manufacturers included McLaren, Eagle, March, Lola, Lotus, Elfin, Matich and Chevron.
Formula Holden was an Australian open wheel racing category introduced in 1989.
Elfin Sports Cars Pty Ltd is an Australian car manufacturer company that was founded by Garrie Cooper. It has been an Australian manufacturer of sports cars and motor racing cars since 1959.
The Brabham BT19 is a Formula One racing car designed by Ron Tauranac for the British Brabham team. The BT19 competed in the 1966 and 1967 Formula One World Championships and was used by Australian driver Jack Brabham to win his third World Championship in 1966. The BT19, which Brabham referred to as his "Old Nail", was the first car bearing its driver's name to win a World Championship race.
This article gives an outline of Formula One engines, also called Formula One power units since the hybrid era starting in 2014. Since its inception in 1947, Formula One has used a variety of engine regulations. Formulae limiting engine capacity had been used in Grand Prix racing on a regular basis since after World War I. The engine formulae are divided according to era.
The BRM P261, also known as the BRM P61 Mark II, is a Formula One motor racing car, designed and built by the British Racing Motors team in Bourne, Lincolnshire, England. The BRM P261 was introduced for the 1964 Formula One season, and its design was an evolution of Tony Rudd's one-off BRM P61 car of 1963. The P261 had a relatively long racing career; variants of the car were still being entered for Formula One World Championship Grands Prix as late as 1968. During the course of their front-line career, BRM P261s won six World Championship races, in the hands of works drivers Graham Hill and Jackie Stewart, and finished second in both the Drivers' and Constructors' Championship standings in 1964 and 1965. Stewart, Hill and Richard Attwood also used works P261s to compete in the Tasman Series in 1966. The BRMs dominated, with Stewart winning four, Hill two, and Attwood one of the 1966 Tasman Series' eight races. Stewart also won the title. The works-backed Reg Parnell Racing team returned in 1967 with Stewart and Attwood, where Stewart added another two wins to his tally. In terms of races won and total championship points scored, the P261 was the most successful car in BRM's history.
Warwick Farm Raceway was a motor racing facility which was in operation from 1960 to 1973. Warwick Farm Raceway hosted numerous major events during its life such as the Australian Grand Prix and rounds of both the Australian Touring Car Championship and the Tasman Series.
The Matich name was applied to a series of sports racing cars and open wheel racing cars produced in Australia between 1967 and 1974 under the direction of Sydney-based racing driver and engineer Frank Matich.
The Rennmax name was applied to a series of open wheel racing cars and sports racing cars constructed by Rennmax Engineering in Sydney, Australia between 1962 and 1978. Rennmax Engineering was established by Bob Britton in 1961, its name derived from the German word "Renn", meaning race and the abbreviation "max", for maximum.
The Cooper T54 is a rear-engined open-wheel race car chassis, designed, developed, and built by Cooper, for U.S.A.C. Indy car racing, between 1961 and 1963. It was powered by a 250 hp (190 kW) 2.75 L (168 cu in) Coventry Climax FPF four-cylinder, but later used an Aston Martin six-cylinder engine, installed by automotive mechanic and engineer Joe Huffaker, after the car had been by Jim Kimberly to Kjell Qvale. After competing in IndyCar racing, it competed in a variety of different motorsports, including sprint car racing, where it was powered by larger Ford, Buick, and Chevrolet V8 engines.
This page is based on this Wikipedia article Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.
