Dsteinhorst
Well-Known Member
This is going to sound backwards to some people, but in the quest of clearing the brakes with 15" RPF1s, Adam turned me onto the fact that the 10" base model brakes fit on the front uprights with slight modification to the front hubs.
I was using cheap 4x100 x 1" spacers and was looking to get rid of them for weight savings, and because lug-centric spacers are ratchet. Also, I had about 0.020" clearance even with them:
I emailed Adam asking if they'd make custom uprights to move the caliper in, but he ended up pointing out what I should have noticed. The only difference between the 10" (4 lug) and 11" (5 lug) brakes is the bracket and the rotor.
I test fit yesterday, and the OD of the hub is too big. I turned it down to about 5.200" today and it fits great:
The benefits for me are 4-fold
1. Clear my wheels
2. Better balance front/rear braking that several people have mentioned.
3. Reduce overall braking to give better pedal feel with vacuum assist. (Effects TBD)
4. Remove 2# of spacer and about 2# of rotor weight from rotating assembly.
Needed supplies to convert from 11" brakes are two caliper brackets from a 4 lug car and two 4×100 rotors. Turn down front hubs to fit inside 4 lug rotors (you measure.) If you pound out one wheel stud, a 3 jaw chuck in a lathe will grab it.
Hope this helps someone else. I wish I would have known this a year ago!
I was using cheap 4x100 x 1" spacers and was looking to get rid of them for weight savings, and because lug-centric spacers are ratchet. Also, I had about 0.020" clearance even with them:
I emailed Adam asking if they'd make custom uprights to move the caliper in, but he ended up pointing out what I should have noticed. The only difference between the 10" (4 lug) and 11" (5 lug) brakes is the bracket and the rotor.
I test fit yesterday, and the OD of the hub is too big. I turned it down to about 5.200" today and it fits great:
The benefits for me are 4-fold
1. Clear my wheels
2. Better balance front/rear braking that several people have mentioned.
3. Reduce overall braking to give better pedal feel with vacuum assist. (Effects TBD)
4. Remove 2# of spacer and about 2# of rotor weight from rotating assembly.
Needed supplies to convert from 11" brakes are two caliper brackets from a 4 lug car and two 4×100 rotors. Turn down front hubs to fit inside 4 lug rotors (you measure.) If you pound out one wheel stud, a 3 jaw chuck in a lathe will grab it.
Hope this helps someone else. I wish I would have known this a year ago!