Camshafts - BMW N55 Manual

Camshafts

Lightweight camshafts as well as cast camshafts or a mixture of both were installed in
N54 engines. Only lightweight construction camshafts are used on the N55 engine.
The lightweight camshafts for the N55 are manufactured in an internal high pressure
forming process called hydroforming. The exhaust camshaft features bearing races and
is encapsulated in a camshaft housing. The camshaft housing reduces oil foaming during
operation.
N55, assembled camshaft
Index
1
2
Explanation
Shell-shaped cam
Corrugated tube
41
N55 Engine