C2 cam wear

Probe Dude probedude@hotmail.com
Mon, 25 Feb 2002 10:16:30 -0600


George,
I'm pretty sure that cam lobes are heat treated for hardness after grinding.
This is one reason for having a religious break in procedure (to prevent
this thin heat treatment depth from being worn through).  Cam lobes are
really soft after you wear through this heat treated layer.

>I suppose it's *possible* the billet was bad from Nissan, but that
>possibility seems awfully remote.  How did you break them in?