Gapping rings for Diamond nitrous pistons?
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Joined: Dec 2003
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Gapping rings for Diamond nitrous pistons? I finally got everything balanced and taken to the machine shop to build. I was talking to a few people and they said that its important how you gap the rings. This is whatone of them said so how do I tell them how to gap my rings? I dont think I will ever spray more then a 300 shot. But for sure a 200-250. Now I might have to drive this car more often then I though, for work so somewhat of a daily driver.
what else do I need to let my machinist know besides this
mains at near .0025, the rods open up a little to .0028-.003
TIA
What happens is that that pressure squeezes out the ring gaps if they are too big and you get blowby. That's where the excess gas passes into the crankcase pressurizing it further. Except it causes the oil to foam while it does it. Which pressurizes above the valvetrain and you get a milky oil covering on everything.
what else do I need to let my machinist know besides this
mains at near .0025, the rods open up a little to .0028-.003
TIA
Just out of curiosity, do you have a reputable engine builder? You should be able to tell him what you are doing with the motor, and he should build it that way. But here's what I gapped my rings at:
top - .024
second - .028
These are for Childs & Albert rings. Consult Diamond for your recommended ring gap.
top - .024
second - .028
These are for Childs & Albert rings. Consult Diamond for your recommended ring gap.
Thread Starter
TECH Regular
Joined: Dec 2003
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Originally Posted by LOnSLO
Just out of curiosity, do you have a reputable engine builder? You should be able to tell him what you are doing with the motor, and he should build it that way. But here's what I gapped my rings at:
top - .024
second - .028
These are for Childs & Albert rings. Consult Diamond for your recommended ring gap.
top - .024
second - .028
These are for Childs & Albert rings. Consult Diamond for your recommended ring gap.
thanks
I called Diamond when I built my forged 346. I told them I would be spraying up to a 200 shot. They had me open the top ring a little to .018 and set the second ring gap to .016. I had two different techs tell me the same thing.
