So the results are in.
The standard set up
Front 240mm disc single piston calliper 220kg. F
Rear 240mm disc single piston calliper 170kg. F
(front rear balance = 56/44) Total force = 780kg. F
The AP front set up
Front 304mm disc four piston AP calliper 310-320kg. F
Rear 240mm disc single piston calliper 160-170kg. F
(front rear balance = 65/35) Total force = 980kg. F
The 280mm Disc with blocked out standard calliper option
(Various options are available.)
Front 280mm disc with blocked out standard calliper 240-250 kg.F
Rear 280mm disc with blocked out standard calliper 210-220kg.F
(front rear balance = 53/47) Total force = 980kg. F
My set up with adjustable bias valve
I tried the various settings on the bias valve for brake balance/feel by road test and then took the car to be checked at the MOT station. Interesting that the best feel was with the valve at maximum opening allowing most fluid to the rear. (This valve only affects the amount of fluid going to the rear. The front is on a separate line and is unaffected.)
Front 304mm disc four piston AP calliper 310-320kg. F
Rear 240mm disc single piston calliper 200- 210kg.F
Total force = 1060kg. F
Conclusion
I have found the brakes to be
much improved over standard. The stopping power is
a lot better while being balanced. i.e. braking hard gives amazing braking, and the fronts only lock under provocation.
Looking at the figures it appears that I now have a an almost exact 60 / 40 front / rear split.