in my 71 duster, im going to install an 8 1/4 with rear discs off of a 98 grand cherokee. my question is, will the hydraulic pressure from my exisiting disc brake prop valve be correct to operate the jeep calipers? it seems to me like the pressure needed to operate calipers would be larger then the pressure needed to operate rear wheel cylinders. ive seen some guys switch in an 8.8 rear out of an explorer with discs, but i never found if they had to replace the prop valve. any help would be greatly appreciated...
very low chance, a tire change in the front OR the back will change what the valving needs are-
best bet is to t off the front brakes toss the stock combination valve and buy an adjustable proportioning valve of summit for $35 so that way, if you ever change tires, or rear ends, or brakes, or you just have a very fat friend that like to sit in your back seat, you will be set for anything to have maximum braking when you need it, could help only 10 ft in stopping distance, but thats a whole car length, its good insurance to have good brakes
not to mention that the disk will lock easier and when you back end locks, you better hang on
Logged
'72 Duster: daily driver in 3 seasons, paid for, insured by and gased up, all by my 17 year old salary
225, 7 1/4, working on 451, and 8 3/4 brakes, 11 3/4
Author
Logged
