I got someblock work done a while ago and shop f'd up the rings so it burned a quart of oil a week. Im taking it back to them to repair (for free) and want to know what specs i should have them gap the rings at rather than let them guess again. 12.5:1 JE .020 over pistons in a JDM GSR engine.

Also, since the rings need to be replaced, what type\brand should I pick up?

Thanks fellas,

-Nick-

 

I believe the top ring gap is 0.012", and the second ring gap is 0.016". Get replacement rings from JE, and they come with a little sheet that tells you how much to gap the rings per inch of bore.

 

it doesn't matter what pistons or bore size you have, the gap on the rings should stay @ the stock setting unless the ring manufacturer states something else

 

I have the sheet that came with my JE's.
Top ring-moderate performance-gap=Bore X 0.0045".
Top ring-Nitrous oxide-------------gap=Bore X 0.006".
Top ring-Forced Induction---------gap=Bore X 0.006".

Second ring-Moderate performance-gap=Bore X 0.0038"
Second Ring-Nitrous Oxide-----------gap=Bore X 0.0045".
Second Ring-Forced Induction--------gap=Bore X 0.0045".


Oil rings-Minimum gap=0.015" for all applications.

Hope that helps-BTW, the calculations are based on the bore size in inches.
For example, my bore is 84mm which equals 3.307".

 

sweet thanks guys!

 

any idea on the price of a replacement ring set from JE?

 

I paid about $100 direct from JE, cheaper if you can find a distributor for their stuff.