I've done the SN85 Front spindles and brakes with rear Lincoln Mark VII disks and calipers with ranger rear axles. Installed the 95GT brake master cylinder from LMR 1 1/16", recommended for disk / disk setup. Using my original 1985 brake booster. Problem is I have bled these brakes over and over again, no air at any bleed screw. I pump up brakes, 3 quick presses, then open bleeder screw, until pedal to the floor, tighten bleeder screw then repeat. Took forever to not get any bubbles at bleeder screws. But have never had good pedal feel thorough the process. When engine off, you can pump up the brakes to get good pedal feel. With engine on, pedal goes right to the floor. Very frustrating. Here are my thoughts.....
1) No brake fluid seeping at any junction so no air leaks.
2) Must have air in the system or would not be spungy.
3) Brake lines to both front passenger and rear brakes are mounted on firewall just below hood (Higher than master cylinder).
4) Using SN95 porportioning valve with valve still in place.
I was planning on taking the stang out for a run and start testing out the pedal travel, rear lockup, etc, to start to work out the proper portioning setup, and just wanted to be able to stop for now.
I am wondering if I need to move the brake lines lower that the master cylinder to ensure that air cannot get trapped. Since this is the only place I can figure out where the air is hiding.... All thoughts and ideas appreciated...
Rich
85 GT vert with 88 drive train
Orlando
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