Here is the rundown: As some of you know, I recently installed a modified 03-04 Cobra brake system, using a Lincoln Towncar MC and SN-95 booster. I also installed an SSBC brake proportioning valve, and gutted the original. After bleeding the system twice, the rear brakes still don't seem to want to bite very well, even after playing with the BPV full open and full close. When moving the BPV to more pressure, the pedal feels stiff and I can easily lock up the front brakes. When I move the BPV to less pressure, the pedal gets soft and I can't get any of the brakes to lock up. Here are my questions-
1. Do I need to bleed the system again? How strong do you have to press the brake pedal to get an accurate bleed? I've been having my 110lb fiancee do the pedal while I open the valves, I worry that shes not pushing hard enough to move a lot of fluid through the system.
2. Does the e-brake use fluid pressure to operate? When I pull the e-brake, I can't get the rear wheels to lock, and even really pulling hard on it, the car only barely shows signs of slowing. Because of this, I worry there is something mechanically wrong with the rear calipers themselves. The calipers and pads are new.
1. Do I need to bleed the system again? How strong do you have to press the brake pedal to get an accurate bleed? I've been having my 110lb fiancee do the pedal while I open the valves, I worry that shes not pushing hard enough to move a lot of fluid through the system.
2. Does the e-brake use fluid pressure to operate? When I pull the e-brake, I can't get the rear wheels to lock, and even really pulling hard on it, the car only barely shows signs of slowing. Because of this, I worry there is something mechanically wrong with the rear calipers themselves. The calipers and pads are new.