Brake master and booster

[RJBM715]

Hi guys just wondering if you can use a brake master and booster from a fsj ( j20, Cherokee chief, wagoneer, etc. And if someone has done it do they have pics and info
thanks Rob

[Ronner]

Yep, I pulled mine from... (brain fart) one of the last years that they made the FS Grand Cherokee, like '91 or something, and it was almost a bolt in - think I had to drill 1 additional hole through the firewall. I had to have about 1/2" added to the pushrod that connects to the brake pedal and add the second line (I made the switch from the stock single circuit to dual at the same time), and a vacuum line for the booster - works great!
Sorry, no pics from me - search the site though, several guys have documented how they have done this.

[kwai]

The FSJ booster will work as Ronner said.

[porkchop]

I used one from a J20 because it is a dual booster. I can now lock the brakes up no problem. I had to drill one hole also. The only picture I have is this one:

[RJBM715]

thanks for your help

[moosejr]

I used the booster and master cyl from a 77 J-20 pickup. As noted, had to drill another hole in the dash, but it is easy to place because of the little aluminum adapter. Also, had to modify the pushrod where it mounts to the brake pedal. I wish I had pictures of that, . .but it was pretty simple. Also, remember, do NOT use the proportioning valve with drum brakes. I only mention that because I have seen it done, and seen the consequences, . .essentially, you end up no rear brakes! Having the dual master cylinder is awesome for both safety and for availability of replacement.. just make a note of what it came off of.