Judd is a name brand of engines produced by Engine Developments Ltd. a company founded in 1971 by John Judd and Jack Brabham in Rugby, Warwickshire, England. Judd has provided engines for many series, including Formula One and other smaller formula series, sports car racing. They have been associated with such as Yamaha, MG. As a result of Jack Brabhams long standing relationship with Honda, after the demise of Formula Two at the end of the 1984 season, Judd continued to develop new engines for Honda. The first was the Judd AV, a turbocharged V8 engine built for Hondas CART campaign and it was first used on the CART circuit midway through the 1986 season, fielded by Galles Racing and driver Geoff Brabham. It was initially badged as the Brabham-Honda, and scored a 4th-place finish at the 1986 Michigan 500, in 1987, the engine was used for the first time at the Indianapolis 500. Brabham scored second-place finishes in 1987 at Pocono and Road America, the engine became known for its reliability and superior fuel mileage. However, it was at a power disadvantage compared to the top engine of the time. In 1988, Truesports with driver Bobby Rahal took over as the team. During the 1988 season, Rahal took advantage of the reliability in the 500-mile races, finishing 4th at Indy. He then scored the first and only Indycar victory for the Judd engine at the Pocono 500 and his ten top-10 finishes led to an impressive 3rd-place finish in the season points standings. Judd continued to build upgrades to the AV into the early 1990s, when Honda moved into the new Formula 3000 series, Judd again developed the companys engine. Based on the architecture of the AV, the new BV V8 was a naturally aspirated variant, after the companys departure from Formula One, Judd returned to Formula 3000 in 1995 with the development of the 3 litre KV V8 engine. Judd built the engines that every Formula 3000 team used, although Zytek was tasked with maintaining the over 80 engines after they were built. Although Judd stopped production of the KV and the Formula 3000 series ended in 2004, in 1988, in conjunction with March Engineering, Judd made the move into the recently reintroduced normally aspirated variant of Formula One, which would completely replace turbocharged cars in 1989. The first Formula One engine developed by Judd, the CV, was built to the 3.5 litre engine formula for naturally aspirated engines, the engine shared many design features with the Judd BV engine, but was expanded to 3.5 litres. March Engineering were the first team who signed to use the Judd CV, reigning World Constructors Champion Williams was later forced also to turn to Judd, after they lost their supply of Honda engines for 1988. In addition, Ligier also bought CVs for use in the 1988 season, construction of the CV continued as a cheaper alternative for smaller teams, however
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1988 Truesports Judd AV Indy car engine.
1989 Judd AV engine
1993 Yamaha OX10A engine, a variant of the Judd GV engine.