Brake Question

GearHd6

Member
Jul 19, 2005
459
0
18
Ashford, CT
Ok, I just installed some 73mm calipers and cross drilled and slotted rotors. I bleed everything out good and I still seem to have a slightly spongy pedal. It'll lock the front tires up evenly still but just not a hard pedal. The pedal is near the top but spongy if you really stand on it. Maybe its normal?
Also it seems like the fronts lock up real easy but the rears wont even think about locking up. Would an adjustable proportioning valve fix this or do I have a bad rubber line at the rear axle?
I read on here to swing the caliper so the bleeder is in the 12 o'clock position and then bleed them. I used a vacuum bleeder and they've always worked good for me.
 
The 73mm Front DOWNGRADE has been discussed at length many times and will INCREASE your Stopping distance if you do not perform some sort of upgrade out back as your Fronts are just going to lock up on you!
 
The 73 MM front calipers and the 87-88 Tbird Turbo Coupe disk rear is a great street combo with 3.55 or 3.73 gears as a bonus. I have never run just the 73 MM calipers by themselves,

To fix the lockup problem, install a adjustable proportioning valve available from Summit Racing. You will also need a different master cylinder. See http://www.svo73mm.cjb.net/ for more help. It's the best Mustang brake site on the web.