Looking for info on using Gapless rings in an engine build. I laying plans for a supercharged engine build (5-7 lbs boost) for a street engine. I understand that normally this requires a larger ring gap due to heat transmitted to the rings by the combustion process. I thought/***umed that both top rings were stepped to be gapless. I was told the other day that might not be correct and only the second ring was gapless (even though its actually an overlap. So I would like to hear opinions on using these rings on naturally aspirated as well as supercharged engines. I would also like to hear from guys using standard rings on supercharged engines and the gaps they use. Any blowby problems with the larger gaps.
I used C&A gapless stepped rings when I could get them and Total seals for over 25 years on natural aspirated engine. Zero leak down is a good thing. I’m sure some have used them on blown engines.
Oil burns hotter than gas, or alky obviously, so anything done to keep it where it belongs is a win. Yes, I know the oil rings aren't gapless. I think they're always a good idea.
I use the gapless on the second rind for blown and top for natural aspirated engines. I follow the ring manufactures recommendations on ring gap.
Used them in my old ProGas car, bought a set for a big Chevy that I ended up selling. Bought a set for a Studebaker engine I'm spending a lot of money and time on now. I doubt that there is a Pro Stock car, or other high end race car that doesn't use them. I do believe that most Top Alcohol cars use them. You NEED the rings to seal for power...these will seal .BUT, you need to follow the instructions for cylinder honing specifics to work correctly and have a long life. Mike
My machinist used them in my race motor.... We had a long discussion, and I PROMISED him I wouldn't run nitrous (not my thing) Probably changed how he set them up. Ended up selling the car and the motor has been sitting for 2 years. Devin
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