Q1.. Does any one know if you can buy individual upper cam bearings. I have a couple of engines with the right most bank (exhaust) suffering from excessive wear. I have been told that the bearing housings are machined in the factory to match the cams, and the housings are not transferable from one head to another. Say if I replace shell E2 with shell E2 from another head would this be sufficiant to maintain oil pressure?. Q2..If the bearings and the cam are machine matched at Nissan, then what happens if you want to replace a cam?. I know with mains and big ends you simply replace the shells but can some shed any light on this cam query..

 

The heads are fully stripped down at my place, but the car is stuck in a repair shop on the ramps. The garage are pussing for me to repair the cam bearings so they can put the car back together.

 

Cheers Guys

 

Dave

the cam bearings are bored inline with the cyl head & swapping over is not recommended, you may be able to get a good engineering company to repair it though.

The bearings in the head itself looks perfect, they must use slightly different composites. This wear from what I can tell is common, so what have guys done in the past to fix this problem