472 supercub Posted June 30, 2013 Author Report Share Posted June 30, 2013 What will cause that bad of pitting will crank cause this crank only had a total of 4 runs on it to test my first build Quote Link to comment Share on other sites More sharing options...
camatv Posted July 2, 2013 Report Share Posted July 2, 2013 crank might be toast might be from horrible deto from bad tune.. might have crap alky buildup in the powerjet's OR ran bowls dry.. OR air leak OR too much timing etc etc.. Quote Link to comment Share on other sites More sharing options...
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