[PONTIAC DUDE]

I run .032 to .035. Even on motor never had blowby issues. Second ring at .024

[Steve Barcak]

Yeah, it is wiser to run a wider gap than a tighter one. Later, you can experiment by closing the gaps if you wish.
Only running .006" piston to wall? That is tight IMO. What does the manufacturer say to do? I would be worried about the skirts that tight. Run over double that number on my nitro motor. Normally run .010"-.012" on a blown gas marine set up. I've run .005" on N/A street motors with forged pistons. many think that is way too much but, the 455 lived for 181,000 miles and did not overheat.

[Travis Q]

You don't have to run as much gap on a turbo motor as a nitrous motor. Not as much heat into the top ring. Also, I like a little more gap on the second ring, but that's just me. If it were mine, I would put the top ring at 0.026", second at 0.028". Keeps pressure from building between the rings. Some engine builders don't use this strategy, but its worked well for me.

TQ

[bad69bird]

Originally Posted by Travis Q

Also, I like a little more gap on the second ring, but that's just me. If it were mine, I would put the top ring at 0.026", second at 0.028". Keeps pressure from building between the rings. Some engine builders don't use this strategy, but its worked well for me.

TQ

I concur with Travis. I run mine .030 and .032.