brake master cyls

MOTORHEAD · #1 (**permalink**) 08-08-2019, 10:09 PM

My kirkham has the Girling brakes, large in front, smaller in back. two master cyls, size .75 & .70. Am I right in assuming the larger cyl bore goes with the larger calipers in front ? I think I inadvertently transposed their positions.
Cobra KIWI ? Comp Classics ?

MOTORHEAD · #2 (**permalink**) 08-09-2019, 01:04 PM

I have 1 anonymous vote for smaller cyl to front calipers.

pormgb · #3 (**permalink**) 08-19-2019, 12:54 PM

Larger front caliper pistons require a smaller MC piston for higher pressure and more front stopping power, and there is typically 1/4" spread between MC cylinder sizes. The correct pedal feel comes from matching the two different pressures, and stopping power are from the right bias. I have a Jaguar rear end with Wilwood Dynalite front calipers. I use a 1" rear MC and a 3/4" MC for the front. I also use a balance bar to get a more bias dialed in. There are lots of threads on this forum, and I got a lot of my information here and talking with Wilwood.