Hey guys i have a 94 gsr jspec i belive not exaclty sure on that but any ways ive building my motor up i work in a auto shop and all. I just baught skunk 2 high compression valves and dual springs and titanium retainers. now my questoin is how much compression would i be able to run in my motor i want to rebuild the bottom end to with ealge rods and high compression pistons what else should i do to raise the compression and what should i watch out for or any other little tips you guys can pass along would greatly be appreciated.

 

How much compression can stock valves take? LS? GSR?

 

I wouldn't go any higher than 12:1 compression if you plan on running pump gas.

Make sure that you have enough valve to piston clearance as well since compression that high with high lift valves might cause problems.

 

do you plan to upgrade the cams at all?

 

i dont have the stock valves in the motor i got skunk 2 high compression. and i am gonna upgrade to ethier skunk 2 stage 2 or pro series 1 cams. And i would like to run pump gas and also thier might be a possiblity for NOS but one questoin how do i check clearance from valves to pistons

 

You have to clay the motor in a completely tedious process explained here: http://www.c-speedracing.com/howto/claymotor/clay.php

But I think with the cams and the compression you plan on running, claying the motor won't be necessary.

 

is it a good idea to do that it seems like a hard idea???? it seems like it would talk almost a whole day in itself. and also would i need diff injectors and a fuel rail

 

How much of a difference can just the pistons make?