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Cosworth DFV
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====DFS==== In 1986 [[General Motors|GM]] financed the British [[Ilmor]] firm to build a competitor to the DFX in [[American Championship car racing|American Indy car]] racing. [[Mario Illien]]'s [[Ilmor|Ilmor-Chevrolet Indy V-8]], which owed not a little to the DFY of five years earlier, quickly took over dominance of the sport. Ford responded by commissioning Cosworth to redesign the DFX to include a number of DFR improvements. In 1989, they introduced an updated "short [[Stroke (engine)|stroke]]" version of the Indy car engine which would be referred to as the "'''DFS'''" ("S" for ''short stroke'').,<ref>{{cite news |url=https://www.latimes.com/archives/la-xpm-1989-03-09-sp-1544-story.html |first=Shav |last=Glick |title=A Cosworth Comeback Is Key to Rahal Hopes |date=9 March 1989 |newspaper=Los Angeles Times |access-date=13 October 2011}}</ref> and the [[Nikasil]] Aluminium liners, adopted on DFY in 1983. The engine was fielded by two teams in its first season: Kraco Racing ([[Bobby Rahal]]) and [[Dick Simon Racing]] ([[Arie Luyendyk]]), and its development was an effort to regain dominance of the sport. At [[1989 Indianapolis 500|Indy]], neither car qualified in the front two rows, but both started in the top ten. On race day, both drivers dropped out with engine failures. Rahal won one race in 1989 at the [[Meadowlands Grand Prix|Meadowlands]]. However, the Kraco team merged with [[Galles Racing|Galles]] at season's end, dropped the program, and switched to Chevrolets. In 1990, the factory development was continued by [[Scott Brayton]] and [[Dominic Dobson]],<ref>{{cite news |url=https://www.latimes.com/archives/la-xpm-1990-05-24-sp-380-story.html |first=Shav |last=Glick |title=11 Buicks Will Have a Race of Their Own in Indy 500 |date=24 May 1990 |newspaper=Los Angeles Times |access-date=13 October 2011}}</ref> but neither won any races. The engine was utilized by other CART teams in 1991β1992, and was retired after the introduction of the [[Ford-Cosworth Indy V8 engine|Ford Cosworth XB]] with only one victory, that being Rahal's in 1989.
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