Originally Posted by Cab_Burge
The ring gap on the E85 motor is from .022 to .025 on the top ring and from .024 to .028 on the second, hopefully that will work on the 150 shot luck
I'm thinking around .030 or larger gap on the top ring(4.500 bore size) for 500+ NOs and .035 and larger for the 2nd ring, is that good? help
Thanks to al of you for the help. Cab


Total Seal wants 0.008" per inch on top and 2nd groove with heavy nitrous. That's worked for me so far at 4.500" bore. That'd put you at around 0.036" gap. Start small, watch the plugs and take LOTS of notes. As Tony said above, when in doubt, take timing OUT. smile