For what type of drag car? How fast is it in MPH at the finish line, how long is the track length and shut down area, and how much does the car weigh?
I'm going to hijack this post if you don't mind. I have the same question. I blew my master cylinder out racing and I'm looking for something a bit more heavy duty.
72 Cuda 340
95 - 100 miles/hr
1/4 mile; not sure how long the shut down area is. It wasn't very long .. hence hard braking
3,000 lbs (maybe lighter - had no interior in it at the time
Your issue isnt the master.. you need bigger brakes... unless you put a larger dia master on.. which is
the wrong thing.. bigger master you have to push the pedal harder to get the same pressure.. a smaller
one will apply more pressure with lesser pedal pressure
Been there done that before I was aware that the same looking master cylinder could come with two different bore sizes and finding out going to bigger was not the correct way to help stop the race car on a short track
I found out later I had switch from a 15/16 to 1 1/8 bore size
I had to almost stand on the dang brake peddle to get it to stop
My current S/P bracket car has dual Willwood master cylinder with 15/16 bore size, my car has dual calipers on the rear end and stops fine at 150.MPH in the 1/4 mile, not so easy on stopping at 120.MPH in the 1/8 mile at our local track
