Hi Johnson . . . I was here once before and it turned out not to be much fun.

I had a v-thingy that had thrown a rod. Didn't think that there was any piston/valve contact - I was wrong!

After a bottom-end rebuild and reassembly the engine just would not settle down. The engine just shook and shook at idle. I tried everything until a buddy told me to do a compression test.

This showed one cylinder was a dead zero . . . it was a slightly bent exhaust valve. Visual inspection did not reveal that it was not on the seat.

Replaced that bent valve and everything was fine.

Have you done a compression test to check for balance? Highest and Lowest readings should be within 10% for best results.

Good luck.

stock49

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