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Old 06-04-2016, 12:12 AM   #2
swamp rat
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Join Date: Oct 2007
Location: Spanaway
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Re: Weird - Oil ring pops out of groove while running on dyno

I hope he mic's all the bores in all the cylinders or used a boar gauge to check them before assy, then also checked all the pistons with a mic or calipers too? Yea i know if one is off it would probably knock...

Is it possible the oil rings and the width of the piston ring grove are not matching?
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Swamp Rat build thread :
http://67-72chevytrucks.com/vboard/s...d.php?t=595019

72 3/4T 4X4
4" BDS Lift
33" BFG's
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