Mercedes-Benz 500I engine
The Mercedes-Benz 500I engine is a highly powerful, turbocharged, 3.4-liter, Indy car racing V-8 engine, designed, developed, and built by Ilmor, in partnership with Mercedes-Benz, specifically to compete in the 1994 Indianapolis 500.
| Mercedes-Benz 500I (Ilmor 265-E) | |
|---|---|
| Overview | |
| Manufacturer | Ilmor-Mercedes |
| Production | 1994 |
| Layout | |
| Configuration | 72° V-8 |
| Displacement | 3.43 L (209 cu in) |
| Cylinder bore | 97 mm (3.8 in) |
| Piston stroke | 58 mm (2.3 in) |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Valvetrain | 16-valve, OHV, two-valves per cylinder |
| Compression ratio | 11:1 |
| Combustion | |
| Turbocharger | Garrett |
| Fuel system | Electronic fuel injection |
| Fuel type | Methanol |
| Oil system | Dry sump |
| Cooling system | Liquid cooling |
| Output | |
| Power output | 1,024 hp (764 kW) |
| Torque output | 557 lb⋅ft (755 N⋅m) |
| Dimensions | |
| Dry weight | 124–131 kg (273–289 lb) |
| Chronology | |
| Successor | Mercedes-Benz IC108 engine (1995) |
The Mercedes-Benz 500I engine was slightly lighter than the Ilmor 265D Indy V8 it replaced in the Penske PC-23, although because of its longer inlets, the 500I had a higher overall centre of gravity, thus changing the overall balance of the car a bit. The development and testing of the 500I engine, at that time called Ilmor 265E, took place in the utmost secrecy because there was a possibility of the turbocharger boost level being changed, or the engine being banned by the Indy 500 sanctioning body.
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