| Ford-Cosworth Indy V-8[1][2][3] | |
|---|---|
 | |
| Overview | |
| Manufacturer | Ford-Cosworth |
| Production | 1975–2007[4] |
| Layout | |
| Configuration | 90° V-8 |
| Displacement | 2.65 L (162 cu in) |
| Cylinder bore | 3.373–3.376 in (85.7–85.8 mm) |
| Piston stroke | 2.248–2.256 in (57–57 mm) |
| Valvetrain | 32-valve, DOHC, four-valves per cylinder |
| Compression ratio | 11.2:1 |
| Combustion | |
| Turbocharger | Cosworth |
| Fuel system | Electronic fuel injection |
| Fuel type | Gasoline/Methanol |
| Oil system | Dry sump |
| Output | |
| Power output | 700–1,000 hp (522–746 kW)[5][6] |
| Torque output | 340–361 lb⋅ft (461–489 N⋅m) |
| Dimensions | |
| Dry weight | 120 kg (265 lb)[7] |
| Chronology | |
| Predecessor | Ford Indy V8 engine |
The Ford-Cosworth Indy V8 engine is a series of mechanically similar, turbocharged, 2.65-liter V-8 engines, designed and developed by Cosworth in partnership with Ford for use in American open-wheel racing. It was produced for over 30 years and was used in the United States Auto Club (USAC) Championship Car series, CART, and Champ Car World Series between 1976 and 2007.[8][9][10] The DFX engine was the Indy car version of the highly successful 3-liter Cosworth DFV Formula One engine developed by former Lotus engineer Keith Duckworth and Colin Chapman (with financial backing from Ford) for the Lotus 49 to campaign the 1967 season. This engine had 155 wins between 1967 and 1985 in F1. The DFX variant was initially developed for Indy car use by Parnelli Jones in 1976, with Cosworth soon taking over. This engine won the Indianapolis 500 ten consecutive years from 1978 to 1987, as well as winning all USAC and CART championships between 1977 and 1987. It powered 81 consecutive Indy car victories from 1981 to 1986, with 153 Indy car victories total.[11]
- ^ Magazines, Hearst (1987). Popular Mechanics. Hearst Magazines.
- ^ "Cosworth DFX Indy Engine". Speedway Motors Museum of American Speed. Retrieved 2021-10-18.
- ^ ""What's New at the Indy 500 - Popular Mechanics, June 1992". Hearst Magazines. June 1992. Retrieved 14 May 2022.
- ^ "Cosworth DFX V-8 Engine, 1975-1985". Retrieved 23 May 2022.
- ^ "Panoz Motorsports History FINAL Jan. 2018" (PDF). Retrieved 14 May 2022.
- ^ "CHAMP CAR MEDIA CONFERENCE". Retrieved 14 May 2022.
- ^ "Engines & Engine Parts".
- ^ "Ford-Cosworth aimed engine program well beyond a powerplant". Automotive News. 2015-12-08. Retrieved 2021-10-18.
- ^ "Cosworth XD 1996 indycar engine Spec Sheet". www.race-cars.com. Archived from the original on 2020-01-10. Retrieved 2021-10-18.
- ^ "CHAMPCAR/CART: Ford Cosworth XF Engine Unveiled at Fontana". us.motorsport.com. Retrieved 2021-10-18.
- ^ "Indy 500 - 100th Race". cosworth.com. Archived from the original on 2016-12-28. Retrieved 2016-12-27.
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