I am about to order my postons and rods. The set up is a B16 block and a GSR head and intake. I have the GSR PCM so the 2 stage manifold will be functional. I plan to run a direct port NOS system but I don't know what compression ratio I need to run. I want to run at least a 100hp shot or more, possibly 150 or 200. What CR is suggested? Thanks

 

I would suggest something around 10.0-10.5:1 with forged pistons.. Your compression with stock B16 bottom end and GSR head will be around 10.4:1 just like a Jspec 5 million series motor unless you already have a 5 mill. block to begin with.. Look into JE pistons and Eagle rods cuz they are both fairly inexpensive.

 

Thanks