930 & C2 turbo piston size

[gumba]

Anyone know the 930 front & rear, and C2 turbo rear piston bore size. I'm looking for a larger rear caliper to go with the front 930 caliper. It would be used with a proportion valve. This is for our race car.
My current set up is 930 front & rear. I don't need more braking, just looking for a better front / rear balance. I don't think different front / rear pads will do it.
I was looking at 930 fronts with C2 turbo rears.

[Bill Verburg]

Originally Posted by gumba

Anyone know the 930 front & rear, and C2 turbo rear piston bore size. I'm looking for a larger rear caliper to go with the front 930 caliper. It would be used with a proportion valve. This is for our race car.
My current set up is 930 front & rear. I don't need more braking, just looking for a better front / rear balance. I don't think different front / rear pads will do it.
I was looking at 930 fronts with C2 turbo rears.

930 f/r is 1.604 biased to the front
if you use 930/965 on the same rotors you go to 1.405

the pistons for 930 are 38/38 front 30/30 rear, the 965 rears are 30/34

if this is a race car where you want to adjust bias I'd use a twin master w/ bias bar setup.