I was thinking of installing CTR pistons in my Gs-R motor, but my head is milled 40 thou.
Will this definitely cause a clearance problem?
Does anyone know if the stock size for the head gasket is 0.6mm or 0.7mm?
What of I use the 1mm head gasket from Toda, will this solve my clearance problem? I am also currently using Mugen valve springs as well, some say that will help since the springs are shorter in lenght??
Can anyone confirm these questions for me?

Thanks guys

 

Yes, stock gasket should be .6 MM.
Not sure about the rest.


Jason

 

CTR pistons have a big dome to it. and the GS-R combustion chamber is small. you might run into clearence problems with the .040 milled. if the clearences are ok you will be running some crazy high compression ratio and will require 94+ octane fuel all the time.

just get some USDM ITR pistons. those alone will give you about 11.5:1 CR in a GS-R head. allong with your milled head you might be closer to 12:1 which would be perfect. i can hook you up with some USDM ITR pistons and ring too. e-mail me and i'll get you a price in CAD dollars too if your interested........

good luck


[Modified by non-VTEC, 10:17 AM 10/20/2001]