The German concern produced the 4.8-liter turbo engine Porsche M48.51 from 2007 to 2010 and installed it on a restyled version of the first generation Cayenne crossover in the back of 957. The unit has two levels of boost: for the Turbo modification at 500 hp and for the Turbo S at 550 hp.
Engines of M48-line: M48.00, M48.50, M48.01, M48.51, M48.70.
Specifications
| Production years | 2007-2010 |
| Displacement, cc | 4806 |
| Fuel system | direct injection |
| Power output, hp | 500 – 550 |
| Torque output, Nm | 700 – 750 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 96 |
| Piston stroke, mm | 83 |
| Compression ratio | 10.5 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | on the intake shafts |
| Turbocharging | MHI TD04HL |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 8.5 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Porsche Cayenne Turbo S 2009) — city — highway — combined |
22.5 10.5 14.9 |
| Engine lifespan, km | ~200 000 |
| Weight, kg | 236 |
The engine was installed on:
- Porsche Cayenne 1 (9PA) in 2007 – 2010.
Disadvantages of the Porsche M48.51 engine
- There are problems with bullying here, but they are less common than their predecessor;
- The culprit is overheating, driving on a cold engine, bad gasoline or oil;
- The expansion tank and coolant pipes often burst and leak;
- A lot of trouble delivers injection pump direct injection systems and fuel pumps in the tank;
- The hot part of the turbines often cracks, the ignition coils and the pump fail.
