Quote:
Originally Posted by arc40s
What is usual damage done? piston breaks? piston bushing destroyed? Rod bearings out of round due to pounding? Main bearing harmed?
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I took apart a 37-38 truck engine with earlier heads, it had domed pistons and flat top heads. The pistons hit so hard you couldn't turn the engine past TDC with a long bar. I looked like it ran for a long time like that, I can't imagine the noise it made. It had a 12V conversion, that's probably why it started. Or alse they towed it to start. The pistons were all broken up, but still in place intact in the cylinders. One head was cracked in the chamber. Otherwise there was no visible damage to the rotating assembly or block, the bearings looked fine except for being worn out.