manual brake second gen F bodies

[nullshine]

Ok, again not exactly 1", but how about this one?

NAPA# NMC M2373
1.03125" bore.

It's 1-1/32", so closer to the 1" mark, but this time on the large side of one inch. I noticed in one of your posts above that you said the 1" vette master was too effortless and had too much travel, so maybe the 1-1/32" will tune a little of that out.

Your 1-1/8" bore has a surface area of 0.9935", if we consider this figure to be "100%", then the 1-1/32" has a surface area of 0.8348" and would be 16% smaller. (So 16% more pedal travel and 16% less effort).

Using the same math for the 24mm (0.94488") we come out with 0.7417" surface area and would be 25% smaller, and again, with 25% more pedal travel and 25% less effort.

PS: I think my surface area calculations should actually be doubled since it's a tandem master, however the percentages should still work the same.

Just for the hell of it,
1-1/16" = 0.88619" and 10.8% smaller than the 1-1/8"

So hopefully based on these percentages you can get an idea of what might be ideal, of course real world testing will prove things for you. If you decide the 1-1/16" is the way to go, I'm not 100% sure, but I think I might have the part# of a Mopar style 1-1/16" on a spreadsheet, but right now I'm out of town and don't have access to it. Should be back on Sunday.



HTH