Weak Brakes - Master Cylinder?

[aerosam]

Originally Posted by flyerncle

No expert either but would suspect its the mixture of components that dont match and cylinder/piston and m/cyl bore sizes are incompatable.

The m/c and rear calipers are both from the donor E34, the only different parts are the sierra front calipers. I still have the donor front calipers, perhaps I could look into fitting them instead of changing the m/c? Would need bigger discs though.