Hi Stu, yes you could alter the brake biasing by changing caliper$.
Please share these stories about bias issues.
No issue if you use '86 only calipers on the front with a constant bore m/c.
Using (as we can easily in our case ( 4wdb 4pot) disc radius, pad area/profile and pad friction are constant) hydraulic leverage ratio's,
I get '86 951 36and34mm front and 30and28 rear, with a 3/4" m/c biased 1.45 to the front.
The same combo using the '87 and on, 951 40and36mm front calipers gives rise to a bias of 1.72 to the front.
The latter later calipers with the 24/19mm split bore m/c gives a bias of 1.1 to the front. This m/c with the '86 calipers give a no no bias of 1.08 to the rear.
Remember wheel speed must be considered, if you have dissimilar sized tyres front and back. Even in this simplified model. :silly:
Calculations on word doc if queried. Please share any discrepancies. (get ur numbers out
)
Matt