Ford-Cosworth Indy V8 engine
The Ford-Cosworth Indy V8 engine is a series of mechanically similar, turbocharged, 2.65-liter, Indy car racing V-8 engines, designed and developed by Cosworth in partnership with Ford. It was produced for over 30 years. It was used in U.S.A.C. Championship Car, C.A.R.T., and later Champ Car World Series; between 1976 and 2007. 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.
| Ford-Cosworth Indy V-8 | |
|---|---|
| Overview | |
| Manufacturer | Ford-Cosworth |
| Production | 1975–2007 |
| 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) |
| Torque output | 340–361 lb⋅ft (461–489 N⋅m) |
| Dimensions | |
| Dry weight | 120 kg (265 lb) |
| Chronology | |
| Predecessor | Ford Indy V8 engine |