The Mercedes-Benz MB 517 was a supercharged, four-stroke, V-12 diesel marine engine version of the MB 507; derived from the MB 503 gasoline engine. The MB 507 was also based on the Daimler-Benz DB 603 inverted V-12 aircraft engine, and shared an identical bore, stroke, and displacement. Unlike the gasoline-powered MB 503, the diesel-powered MB 507 did not use a supercharger.[1][2][3]
| Mercedes-Benz MB 517 engine | |
|---|---|
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 1944 |
| Layout | |
| Configuration | 60° V-12 |
| Displacement | 42.35 L (2,584 cu in) |
| Cylinder bore | 6.22 in (158.0 mm) |
| Piston stroke | 7.09 in (180.1 mm) |
| Valvetrain | 24-valve, SOHC, two-valves per cylinder |
| Compression ratio | 17.0:1 |
| Combustion | |
| Supercharger | Roots-type supercharger |
| Fuel system | Fuel injection |
| Fuel type | Diesel |
| Oil system | Dry sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 1,200–1,375 hp (895–1,025 kW) |
| Torque output | 2,520–3,140 lb⋅ft (3,417–4,257 N⋅m) |
| Dimensions | |
| Dry weight | 790–920 kg (1,742–2,028 lb) |