Which master cylinder bore size to use for power disc Kelsey/Hayes

Thats a nice part but if you have manual brake kelsey hayes disc brakes you will be putting both feet on brake pedal and still not stopping with that large bore master cylinder


The stock bore is 1"

This master is only 0.03125" larger in diameter.

.835 sq in

.785 sq in

It's only 6% more force.

If you press with 250 lbs of force you add 15 extra pounds. Negligible.


Not to mention, I bet all 1 inch mc that have been rebuilt once or twice are close to that size

17091713264086270725389986349014.jpg