Engine BMW N62B44

The BMW N62B44 engine has two versions. Displacement, power, bore and stroke are the same for both versions: 4.4 liters (4398 cc), 92 mm bore and 82.7 mm stroke. Developed power of one version is 320 hp at 6100 rpm, and torque is 440 Nm at 3700 rpm. The second version develops 333 hp at 6100 rpm, its torque is 450 Nm at 3600 rpm.

BMW N62B44 manual
(PDF, 1 Mb, en)

Other modifications of N62: N62B36, N62B40, N62B48.

Specifications

Production years 2001-2006
Displacement, cc 4398
Fuel system injector
Power output, hp 320 /6100 rpm
333 /6100 rpm
Torque output, Nm 440 /3600 rpm
450 /3500 rpm
Cylinder block aluminum V8
Block head aluminum 32v
Cylinder bore, mm 92
Piston stroke, mm 82.7
Compression ratio 10
10.5
Features Valvetronic
Hydraulic lifters yes
Timing drive chain
Phase regulator double VANOS
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 8.0
Fuel type 95
Euro standards EURO 3/4
Fuel consumption, L/100 km (for BMW 745i E65)
— city
— highway
— combined
7.1
5.3
5.8
Engine lifespan, km ~320 000
Weight, kg 213

Disadvantages of the N62B44 engine

  • The main problems of the motor are associated with malfunctions of the Valvetronic and VANOS systems;
  • In second place is the growing oil consumption due to wear of valve stem seals;
  • Floating RPM is usually caused by ignition coils or flowmeters;
  • Very often the sealing gasket of the generator housing and the crankshaft oil seal are leaking;
  • On a long run, crumbs from a collapsing catalyst are sucked into the cylinders.

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