Judd (engine)

Judd is a brand of racing car engines built by Engine Developments Ltd., a company founded in 1971¹ by John Judd and Jack Brabham in Rugby, Warwickshire, England. Engine Developments was intended to build engines for Brabham's racing efforts, and became one of the first firms authorised by Cosworth to maintain and rebuild its DFV engines, but has since expanded into various areas of motorsport. Judd has provided engines for many major series, including Formula One, Indycar and other smaller formula series, sports car racing, and touring car racing. They have been associated with manufacturers such as Yamaha, MG, Mazda and Honda, although they have mainly been a privateer-engine supplier.

Judd is a brand of racing car engines built by Engine Developments Ltd., a company founded in 1971 by John Judd and Jack Brabham in Rugby, Warwickshire, England. Engine Developments was intended to build engines for Brabham's racing efforts, and became one of the first firms authorised by Cosworth to maintain and rebuild its DFV engines, but has since expanded into various areas of motorsport. Judd has provided engines for many major series, including Formula One, Indycar and other smaller formula series, sports car racing, and touring car racing. They have been associated with manufacturers such as Yamaha, MG, Mazda and Honda, although they have mainly been a privateer-engine supplier. ===EV=== The previous Judd CV was designed with a conventional 90-degree engine block. Following the 1988 season it was decided that a narrower vee-angle would be adopted to give a more compact engine; the original intent was a 75-degree vee, but limitations in Judd's CNC equipment (it could only work in even-degree increments) meant that 76 degrees was used instead. March Engineering upgraded their 1988 CV unit to an EV in 1989, while Brabham was also supplied with the new engines. Brabham and March each scored one podium with the EV engine. Both teams continued with the EV in 1990, although March Engineering was renamed Leyton House Racing. Leyton House took the engine's only podium of the season, a second place at the French Grand Prix. For 1991, Team Lotus was the only team to use the older EV. ===Complete Formula One World Championship results=== (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) ==Sports car racing== ===GV10=== In 1991, the World Sportscar Championship introduced an engine formula nearly identical to Formula One. This was an attempt to decrease cost by allowing sportscar teams to purchase Formula One engines, while at the same time encouraging major sportscar manufacturers to enter Formula One. This allowed for Judd to offer their GV V10 to customers following modifications to meet the endurance requirements necessary in the World Sportscar Championship. As financial troubles hit other teams, the Judd V10 became one of the few privately funded engines for the top C1 class. Mazda was forced to turn to Judd to replace their outlawed rotary engines, although the GV10s would be rebadged as Mazda MV10s. Euro Racing, also purchased GV10s for their Lola T92/10s. Mazda finished third in the team's championship while Euro Racing took fifth. The World Sportscar Championship was cancelled in 1993, quickly ending Judd's first brief involvement in sports car racing. ===GV4=== After engine involvement with Yamaha in Formula One, Judd returned once again to sports car racing. Believing that a large naturally aspirated engine would be fitting for use as a customer supply in the Sports Racing World Cup, Judd resurrected the GV10 from a few years earlier. Expanded to four litres and upgraded with new technology, the new GV4 became a favorite choice for teams not running the dominant Ferrari 333 SP, eventually winning the championship with Racing for Holland in 2002 and 2003. In 2000, a Doran Ferrari 333 SP-Judd hybrid appeared, the performance of the Judd engine being deemed superior to that of the six-year-old Italian unit, which was no longer supported by Ferrari. The GV4s also became powerful enough to contest for overall wins in the 24 Hours of Le Mans, with Oreca Dallaras running the GV4 finishing fifth and sixth in as well as an overall victory for Doran Lista at the Rolex 24 at Daytona the same year. The engine's reliability record at Le Mans was still patchy and, while it could challenge for the pole in Domes and Dallaras, the engine RPMs had to be reduced to ensure it survived the race.

Text derived from https://en.wikipedia.org/w/index.php?oldid=1370964109 under CC BY-SA 4.0; modifications have been made.