CM871 - camshaft bearing issue

[Rawze]

Sounds a lot to me like people trying to take shortcuts or cutting corners .. and then wondering why things went sideways.

Not replacing everything with new, all OEM-ONLY parts, including the head itself the first time it spun a bearing sounds like a big mistake to me. and now your paying the price for half-baked decisions that tried to save you moneys.

and like mentioned .. yeah... a lot of shops are not nearly careful enough not to ding cam bearings when installing the cam...

Also.. what is the oil pressure at idle?... and has anything been done to ensure crank case fumes cannot build up in the engine.. like bypassing the CC filter or installing a maintenance free one?... any crank case fume back-pressure or restriction will wipe out cam lobes.. but will not cause spun bearings. SPun bearings either come from carelessness during cam install OR someone trying to re-use a head.. Don't matter that it only had 200k miles on it.. it should NOT have been re-used!..

Just my thoughts... so if things are done 100% right... then unexpected results like that simply do not happen. Makes me question the entire rest of the inframe too. Here is what should have happened. Anything less and your just wasting your time and moneys ...
ref: http://rawze.com/forums/showthread.php?t...6#pid70606