Posted by Owen Aaland on May 05, 2012 at 22:26:37 from (216.47.35.176):
In Reply to: OOPS !!!!!!!!!!! posted by NCWayne on May 05, 2012 at 20:34:02:
The first problem is going to be if it can be determined what caused the valve to break.
Did the lash adjuster back off on that valve? Is there any unusual wear on the keepers or the spring retainer? Problems with the adjustment or debris getting between the valve seat and valve face causing the valve to hang open enough for the piston to hit it could be reasons for failure based on installation.
Is there any history of this series engine having this type of valve failure? You said it was the only brand of head available but didn't specify if it was a Cat head or aftermarket. Can you tell if the valve head broke first or was it a keeper failure that allowed the valve to drop? Are they sodium filled valve stems where they was a flaw in the valve?
Knowing those answers would go a long way toward arguing for warranty coverage.
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