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View Full Version : Brake booster swap ????

DutchVDub
June 30th, 2009, 13:47
trying to find the write-up on swapping in a dual diaphram booster into an older jeep. Anyone know have a link to it? I tried searching but I'm at work and computer use is frowned upon a bit.
Caged94XJ
June 30th, 2009, 14:33
http://naxja.org/forum/showthread.php?t=924285
xj-grin
June 30th, 2009, 15:25
search for "mad XJ Brakes" with and without hyphens... should find a link to it here at NAXJA -- best upgrade I ever did to my old 91 for pure drivability sake...
eflores
June 30th, 2009, 15:43
i did it too.....i love it
Kiefer316
June 30th, 2009, 16:00
I only have about half a pedal on my 96. I wonder if a new booster would fix this...
tysonxj
June 30th, 2009, 19:11
http://www.madxj.com/MADXJ/technical/technicalfiles/ARbrakeBoosterUpgrade/BrakeBoosterUpgrade.htm

I have a booster / master that I am looking to get rid of if anyone is interested.

Chris
DutchVDub
June 30th, 2009, 19:22
http://www.madxj.com/MADXJ/technical/technicalfiles/ARbrakeBoosterUpgrade/BrakeBoosterUpgrade.htm

I have a booster / master that I am looking to get rid of if anyone is interested.

Chris


I was actually just reading your write-up when I saw your post.

I've got the booster froma 94 w/ABS and I am swapping it into my 1992. Anything other than what you mentioned I should be aware of?
Kiefer316
June 30th, 2009, 19:23
Was the 94 a dual diaphram? I thought it was only 95+
DutchVDub
June 30th, 2009, 19:24
Was the 94 a dual diaphram? I thought it was only 95+


The ABS one were
Kiefer316
June 30th, 2009, 19:31
Gotcha... I just read the whole write up...
tysonxj
June 30th, 2009, 19:33
Not my write up, but seems pretty complete.

I was gathering parts to do my '93 when I decided to build my '99 instead.

I was actually just reading your write-up when I saw your post.

I've got the booster froma 94 w/ABS and I am swapping it into my 1992. Anything other than what you mentioned I should be aware of?
Peregrine
July 1st, 2009, 07:03
That MadXJ article states the '94 w/abs pedal rod is the same as the 95/96 years. I did this upgrade about 4 years ago with my '92. A '96 booster/mc was a direct swap into the 92. The pedal rod was identical. No modifications needed. The only thing I had to do was bend/flare new brake lines going from the new master cylinder to the proportining valve (since the line location was different in my old master cylinder.) Make sure you have the square spacer that goes between the booster and the firewall. You could fab one up but I don't remember the thickness (3/8" maybe). It really was a simple swap. Huge improvement on braking. this kept me from spending the money on a disc conversion. I am only on 32's, but I can lock the rears if I need to.

**just read it again and article contradicts itself. It says that the 94 pedal rod is not the same as the earlier XJ's...then says that it is the same as the 95. (which would be the same as the 96) The only thing I know for sure is the 96 and 92 are identical.**
xj-grin
July 1st, 2009, 07:27
That MadXJ article states the '94 w/abs pedal rod is the same as the 95/96 years. I did this upgrade about 4 years ago with my '92. A '96 booster/mc was a direct swap into the 92. The pedal rod was identical. No modifications needed. The only thing I had to do was bend/flare new brake lines going from the new master cylinder to the proportining valve (since the line location was different in my old master cylinder.) Make sure you have the square spacer that goes between the booster and the firewall. You could fab one up but I don't remember the thickness (3/8" maybe). It really was a simple swap. Huge improvement on braking. this kept me from spending the money on a disc conversion. I am only on 32's, but I can lock the rears if I need to.

**just read it again and article contradicts itself. It says that the 94 pedal rod is not the same as the earlier XJ's...then says that it is the same as the 95. (which would be the same as the 96) The only thing I know for sure is the 96 and 92 are identical.**

Ditto my experience with a 95 into a 91 - bolt in, you'll figure it out no prob, Rich. I am pretty sure the 94 ABS is identical to the 95-96 models, and that the rod change came in 97, which are the same as late model ZJ /WJ, but not older XJ...
Caged94XJ
July 1st, 2009, 10:22
I had a 94 with ABS and put a 96 in. They are not the same and the braking isn't as good.
Stang5lgt
July 1st, 2009, 20:08
He got the booster from me I was going to put it in my XJ but I found a WJ one and heard they have more braking power so I grabed it. It should be a direct bolt in. On the older XJs like my 89 you have to make some mods to the end of rod for the brake light switch.