Drew2010
Full Access Member
well as some of you may know, I am having a set of heads rebuilt for my truck. tonite I got one of the old heads pulled off the engine in preparation for when I get my heads back from the shop, and found something I am not sure about. There are marks on the pistons where the valves have been just touching... there is no damage, but the pistons are shined up, its on all 4 on that side, I havent got the other side apart yet.
I put new head gaskets in this engine before it went in. and there were no marks then?
What would cause this? my only thoughts would be:
I put new head gaskets in this engine before it went in. and there were no marks then?
What would cause this? my only thoughts would be:
- Out of Spec Cam... doubtful, I have never heard of this being an issue.
- Bad valve springs allowing the valves to float a little? Although I never over revved it?
- Timing cant cause this could it, I am 99.9% sure all the gears stayed lined up, but if the TYP4 cam has no extra lift, but lift in different places, it couldn't do this right?
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