[Bert87]

So over Thanksgiving I rebuilt the calipers and replaced the soft lines on my 71 911T. Everything went pretty well but I am unable to properly bleed the brakes.

On disassembly I blocked the brake pedal just forward of engagement but forgot to plug the lines. So far I have tried regular old 2 person bleeding, gravity bleeding, and using the air compressor hooked to the vent line. Seemed to take a long time to fill the lines/calipers initially. I started with 2 person bleeding, then gravity, then pressure. Reservoir never ran empty.

On the last pass with the pressure I ran the majority of a reservoir through each caliper starting at drivers rear -> pass rear, pass front, drivers front. No bubbles seen.

I tried the brakes before I relieved the pressure and the pedal felt exactly as it should. Very firm about 1/2 way through its travel. Stayed firm while keeping pressure. Without the pressure though it doesn't start to firm up till its at the floor. I can stop but not lock up the tires.

I have been reading about new seals sucking the pistons back in farther than normal but I feel like it shouldn't be this drastic. Any suggestions for other bleeding methods?