BMW N62 Series User Manual

New Generation N62 Engine Chapter 3 P.28
Course Contents/Background Material
© BMW AG, Service Training
Cylinder heads
General information
The two N62 cylinder heads are a new development from BMW.
They are fitted with the Valvetronic valve timing system.
The secondary air ducts for subsequent exhaust vapour
treatment are integrated in the cylinder heads.
The cylinder heads are cooled according to the cross-flow
principle.
The inlet camshaft and the Valvetronic eccentric shaft are jointly
guided by means of a bridge support.
The cylinder heads are made from aluminium. They are
manufactured using gravity die-casting.
The cylinder heads for the B36 and B44 engines are not the
same. The combustion chamber and intake valve diameters are
different (see the N62 Introduction/Technical data section).

BMW N62 Series Specifications

General

Configuration	V8
Fuel type	Petrol
Valvetrain	DOHC 4 valves per cylinder
Torque Output	340–490 N⋅m (4.4L), 475-490 Nm (4.8L)
Compression Ratio	10.0:1 (4.4L), 10.5:1 (4.8L)
Engine Block Material	Aluminum
Cylinder Head Material	Aluminum
Cooling system	Water-cooled
Redline	6, 500 rpm