Mercedes-Benz supercharged Grand Prix racing engine
| Mercedes-Benz Grand Prix racing engines | |
|---|---|
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 1934-1939 |
| Layout | |
| Configuration | Straight-eight / 60° V12 |
| Displacement | 5.7 L (5,663 cc) 3.0 L (2,961 cc) |
| Cylinder bore | 94 mm (3.7 in) 67 mm (2.6 in) |
| Piston stroke | 102 mm (4.0 in) 70 mm (2.8 in) |
| Valvetrain | 32-valve to 48-valve, DOHC, four-valves per cylinder |
| Compression ratio | 7.3:1-7.5:1 |
| Combustion | |
| Supercharger | Roots-type supercharger |
| Fuel system | Carburetor |
| Oil system | Dry sump |
| Output | |
| Power output | 280–640 hp (209–477 kW) |
| Torque output | 253.5–715 lb⋅ft (344–969 N⋅m) |
| Dimensions | |
| Dry weight | 222 kg (489 lb) |
| Chronology | |
| Successor | |
Mercedes-Benz made a series of pre-war supercharged Grand Prix racing engines for their Silver Arrow race cars; between 1934 and 1939. They made two supercharged inline-8 engines; the M25 and M125, and one V12 with two generations; the M154 / M163.