Quote:
Originally Posted by madmaxx
Disclaimer - I am no engine expert, lawyer, and very ignorant. Can somebody explain to me what would cause a dog bone to fail. The ones I have seen are pretty stout and I ASSUMED their purpose was to prevent lifter rotation. Looking at retro lifter the anti-rotation bar they have is a fraction of the thickness of a dog bones on the engines I have seen.
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Could be an issue with too much lift on the cam...or maybe it was just a weak dogbone as cast.