47cc is what I ended up with, for 550cc's of motor.
4-5 degree squish angle. .039 squish
170 psi static , but I'm thinking you want corrected? Which I havent figured. Port heights are stock, just cleaned up. Thanks for the response, I just dont want to detonate the guts out of the thing.
Just a note I had to fix the squish angle after a couple rides, it hit HARD & tacked up quick but hit a wall up top. The constant 4 degree squish was over accellerating the combustibles. You need the 4-5* angle just for the first 4mm from the outside then the angle changes to 14-15* into the dome pocket.