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One of the most successful and longest-lived projects of Cosworth has been its Indy car engine program. In 1975; Cosworth developed the DFX, by destroking the engine to 2.65 L and adding a turbocharger, the DFX became the standard engine to run in IndyCar racing, ending the reign of the Offenhauser, and maintaining that position until the late 1980s.
1935 Miller IndyCar chassis was the first to use a Ford engine. IndyCars with Ford engines first competed in 1935 using a production-based Ford V8 in the Miller-Ford racer. [10] [11] A pushrod Ford V8 raced with Lotus in 1963, and Ford's first Indy win was in 1965 with a DOHC V8.
In 1975; Cosworth developed the DFX, by destroking the engine to 2,650 cc (161.7 cu in) and adding a turbocharger, the DFX became the standard engine to run in IndyCar racing, ending the reign of the Offenhauser, and maintaining that position until the late 1980s.
The Ilmor 265-A is a turbocharged, 2.65 L (162 cu in), V-8 Indy car racing engine, designed and developed by Ilmor, for use in the CART PPG Indy Car World Series; between 1986 and 1993. 2.65-liter Indy motor cubic inch based on the pre-chevy Studebaker 265, current generation is DFX Ford V-8
The engine won the Indianapolis 500 ten consecutive years from 1978 until 1987, as well as winning all USAC and CART championships between 1977 and 1987 except for one. For a brief time in the early 1980s, some of the DFX engines were badged as Fords. The DFX powered 81 consecutive Indy car victories from 1981 to 1986, and 153 victories total.
The Chaparral 2K is an open-wheel racing car chassis, designed and built by Lola Cars that competed in the CART open-wheel racing series, for competition in the 1979 IndyCar season, and competed until 1981. It famously won the 1980 Indianapolis 500, being driven by Johnny Rutherford. [4] [5] [6]
On April 30, 2011, IndyCar owners voted 15–0 to reject the introduction of multiple Aero Kits for the 2012 season, citing costs. [21] Owners expressed their desire to introduce the new chassis/engines for 2012, but have all participants use the Dallara aerodynamic package in 2012, and delay the introduction of multiple aero kits until 2013.
IndyCar Series engines were rev-limited to 10,300 rpm and produce approximately 650 hp. A 'push-to-pass' system was intermittently adopted since the middle portion of the 2009 season, which increased the numbers to 10.500 rpm and 690 hp when employed. The valve train is a dual overhead camshaft configuration with four valves per cylinder.
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