Pelican Parts Forums - 930 & C2 turbo piston size

Pelican Parts Forums (http://forums.pelicanparts.com/)

- Porsche 911 Technical Forum (http://forums.pelicanparts.com/porsche-911-technical-forum/)

- - 930 & C2 turbo piston size (http://forums.pelicanparts.com/porsche-911-technical-forum/472804-930-c2-turbo-piston-size.html)

930 & C2 turbo piston size

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.

Quote:

Originally Posted by gumba (Post 4645761)

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.