type r pistons with gsr

[whtteg]

Originally Posted by gsr916

12.3 just seems too high. i looked online and a lot of sites say 12.3, some say 12.1... i guess it makes sense but seems like with a cr that high seems stupid to put them in a b18 for a daily driver... detonation is like synonomous with the grim reaper. o well whatever i was wrong, admitted...

You have to understand that most people upgrade their cams with these pistons installed and that will lower the dynamic c/r so you really won't have that high of a c/r so pump gas will be fine. Also 12.3 can be done on pump gas as long as the tuning is done properly. A little high yes, but can be done.