#712, "RE: You sort of lost me...." In response to In response to 4
Ooohhh To tell you the truth there is no definite answer, HRC prefered to go with 8:8:1, which isnt a big jump from 8:5:1
8:5:1 is the "normal/safe" turbo charged motor compression ratio, like the GS-T's 4G63 motor. I think HRC used a 8:8:1 for a little more low end power. I think both are fine, both will definitely work, its just preference.