Brake bleeding Q: less pedal travel for the fronts vs. the rear?

[JP911]

During a recent brake bleed, my "pedal man" (Vash) noticed that I had more pedal travel when bleeding the rear calipers vs. the fronts. The difference was approximately a 1/2 inch. The brakes bleed fine, with plenty of fluid being moved, and I've used these brakes successfully for 6 track days. The brakes require alot of leg force to stop the car, but the stopping power is intense when you get into it.

Is this uneven pedal travel normal? If not, what could cause this?

The brake setup is 930 front and rear, 23mm non-boosted M/C, Porsche street pads, newish sotck soft lines, no proportioning valve, and I use ATE super blue fluid.

[Bill Verburg]

Smaller rear caliper pistons so process less fluid than the fronts

[Steve@Rennsport]

Jon:

Big Question: Are you pressure bleeding the system or using two people and the "pump & hold" method?

[JP911]

"Pump and Hold" method with two people.