| 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)[1] |
| 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,[2][3][4][5][6][7][8] and one V12 with two generations; the M154 / M163.[9][10][11][12]
- ^ "Specifications of 50 famous racing engines up to 1994 - Page 3 - F1technical.net".
- ^ "Four of the Greatest Straight-8s to Ever Come off an Assembly Line". 11 June 2021.
- ^ "1937 Mercedes-Benz W125 - Images, Specifications and Information".
- ^ "1934 - 1935 Mercedes-Benz W25 - Images, Specifications and Information".
- ^ "Mercedes-Benz W 25".
- ^ "1937 Mercedes-Benz W25 Avus Stromlinie | Review". 19 April 2016.
- ^ "Mercedes-Benz M25 Engine".
- ^ "Legend 7: Mercedes-Benz M 25 e Grand Prix engine".
- ^ "1938 - 1939 Mercedes-Benz W154 Specifications".
- ^ "Mercedes W154". 30 August 2009.
- ^ "Mercedes-Benz W 154 racing car, 1938".
- ^ "1938 Mercedes-Benz W154 | Review". 19 April 2016.