The N73B68 engine (according to some sources N73B67) was installed on the Rolls-Royce Phantom from 2003 to 2017. The volume of this giant engine is 6749 cc with 12 cylinders and a V-shaped layout. The engine block and cylinder head are made of aluminum, each cylinder block has 2 camshafts.
Other modifications of N73: N73B60.
The engine was installed on:
- Rolls-Royce Phantom 7 (RR1) in 2003 – 2017.
|Fuel system||direct injection|
|Power output, hp||460|
|Torque output, Nm||720|
|Cylinder block||aluminum V12|
|Block head||aluminum 48v|
|Cylinder bore, mm||92|
|Piston stroke, mm||84.6|
|Phase regulator||double VANOS|
|Recommended engine oil||5W-40|
|Engine oil capacity, liter||8.5|
|Euro standards||EURO 4/5|
|Engine lifespan, km||~330 000|
Disadvantages of the N73B68 engine
- The main problems are associated with rapid coking due to the direct injection system;
- The Double VANOS system is a modest resource here, sometimes less than 150,000 km;
- Still often there are vibrations at low speeds due to a malfunction of Valvetronic;
- After 150,000 km of run, they often stretch here and require replacement of the timing chain;
- The weaknesses of this motor also include a tendency to leaks and oil consumption.