lophilip

if I install these pistons:
http://www.sr20forum.com/naturally-a...ve-hybrid.html

in a 1991 SR20de (NX2000) engine what will the compression ratio be? I am looking for pistons around the 10 to 11:1 area.

bootiesan

If you are going to run a higher compression ratio then just get brand new pistons from Gspec performance. Get the N1 pistons with sr20ve rings. This would bring the comp ratio up to around 11:1 and you would not have to run race gas to not ping. Pump gas like super unleaded would be great and you will not have to worry about back pressure with stock exhaust manifolds and you can easily run these much safer than with sr16s. This would be the way that I would go.

Rob E

It looks like the machining modifications to these pistons will make them roughly equivalent to the N1 pistons.