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

More than a 1" bore.

I agree it is feel but if you pick up a 100lb box then a 106lb box are you really going to notice it?

If on the other hand you can barely lift the 100 lb box you might not be able to lift the 106 lb box

Most braking is done with very little foot pressure.

Now the 14% less force 15/16 mc you might notice that.

I suspect your testing was on a road course?

Where heavy braking and highly controlled braking are needed.


I'm not arguing with your testing or results I just suspect that we are talking apples to oranges.


It will not hurt my feelings if you correct my assumptions

I totally respect mosta your stuff, You have totally valid points,
I'm just old school. Lol
"show me" lol