My new KB pistons arrived today so we miked them and they were 3.873 1/2 thous, my bores are 3.875, both pistons and both bore were the same, now thats 1 1/2 thous clearence, I put in new pistons but reused my old rings, heck they haven't seated in good yet, anyways fired it up at 10:30 tonight and no knocking sound, motor is very quiet, it's so quiet I can hear the primary chain, I hope it stays that way, I'm happy.
It also goes to show that if the clearence ain't right on KB pistons your in for some noise.
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My Dad said you learn from your mistake's,I should be the smartest guy in the world
I think I am getting smarter and wiser, seems the world is not.
