goober35

iTrader: (1)

I did a search and came up with this.
Top ring 20-35
2nd ring 22-37

It is a 4.03 witch i had trouble finding the info i wanted. Most of what i cam up with was for bottle and i am not sure if that is the same gap as i would use for boost. This will be in a DD so i know i can not run a **** load of ring gap. I know that the bottom ring needs to be to have more of a gap to keep ring flutter away. Any input to find out what kinda gap i need to run would be great. Looking to make lots of power with lots of boost. I am not aimming for a psi goal i am aimming for 700rwhp. So what ever boost i have to run i will do it.

cablebandit

iTrader: (37)

for my ross on a 3.905 bore they said to use 3.905 X .004...then add .004 for a FI motor
on the top ring. Second ring 3.905 x .005 then add .004 for FI. They don't say anything about different bore size so that should be right fir you.

goober35

iTrader: (1)

I would thing that is really really tight. The rings are going to exspand more than .017 i would exspect. I have heard of people using .0075 on top and add 4-5 on the bottom.

cablebandit

iTrader: (37)

i think mine are gonna be .0192 top and like .023 for the second

1dirtyZ

iTrader: (1)

i thought the rule of thumb was .004 for every inch of bore for N/A
and .005 for every inch of bore for F/I on the top rings ,
and just add .004~.005 to what you got for the top ring to figure out the bottom.