Crane Roller Lifters OH NO!

badvaliant said
Here are some pics. As those of you with vision will see, the two lobes on cylinder 4 are probably not going to buff out. Also, there is a crack on the intake lifter where it should be attached to the link bar, and the rivet holding it together is gone. Therefore the lifters were able to move sideways. Now it's just a matter of finding out what problem caused the other problems.

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First the lifter body cracked thru the rivet hole this then caused the rivet to fail.
The damage to the cam is collateral for the lifter rotating in their respective bores.
When I was a Engineering Lab Tech for an engine manufacture I found that the majority of failures came from the small parts, then those small part failures caused catastrophic damage.