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Weksan · 07-05-2018, 04:02 PM

Hey there I'm rebuilding my sr20det for moderate boost(15-18psi) and I have a few questions about the ring gaps. I have a stock bore oem piston and new oem rings.

Most people say .018" top ring and .021" middle ring, what about the bottom ring? Do I gap them to factory spec? Also those top and middle rings specs that I have read on other forums are out of the limit per fsm; .0154" top ring, middle ring is within spec as its limit is .0232".

I'm having the machine shop gap them for me. He says unless I say what size to gap the rings, he will gap them on the higher end of the spec

07-05-2018, 04:02 PM	#1
Weksan Join Date: May 2018 Location: CA Posts: 9 Trader Rating: (0)	Sr20det piston ring gap Hey there I'm rebuilding my sr20det for moderate boost(15-18psi) and I have a few questions about the ring gaps. I have a stock bore oem piston and new oem rings. Most people say .018" top ring and .021" middle ring, what about the bottom ring? Do I gap them to factory spec? Also those top and middle rings specs that I have read on other forums are out of the limit per fsm; .0154" top ring, middle ring is within spec as its limit is .0232". I'm having the machine shop gap them for me. He says unless I say what size to gap the rings, he will gap them on the higher end of the spec