Before you condemn the master cylinder, adjust the pedal linkage so that when you look in the reservoir, you see a little spurt of brake fluid. That means the relief port is not blocked. If you don't see that spurt, that means the port is blocked and expanding brake fluid (from heat) has nowhere to go.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.