91Pioneer Posted January 16, 2015 Share Posted January 16, 2015 I'm on the hunt for a 95/96 XJ brake booster & master cylinder to do an upgrade. Does anyone here know with certainty if the booster and/or master are compatible with my 91 MJ if the XJ one has ABS? I would think the brake booster would still fit, but the master might be different. Thx. Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 17, 2015 Share Posted January 17, 2015 The 95-96 boosters are the same, anti-lock or not. The 95-96 masters have different part numbers from w. and w/o anti-lock, so I used a non-anti-lock master when I installed mine. I don't know the difference between the masters though. Link to comment Share on other sites More sharing options...
91Pioneer Posted January 17, 2015 Author Share Posted January 17, 2015 OK I kinda figured. How about the short lines? Can I reuse the ABS MC lines to the block? Hoping so... Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 17, 2015 Share Posted January 17, 2015 I didn't because IIRC the old lines didn't line up with the ports and the new master flare fittings were a different size. I bent new lines from the master to the block and reused the block flare nuts. Link to comment Share on other sites More sharing options...
cruiser54 Posted January 17, 2015 Share Posted January 17, 2015 Grab a WJ booster and master and be done with it. Somewhat simpler and works great. Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 17, 2015 Share Posted January 17, 2015 Nope, it won't be simpler for his 91. The 95-96 XJ swap is pure PnP and the hardest part, if you want to call it hard, is bending the new lines which you should do anyhow. Link to comment Share on other sites More sharing options...
91Pioneer Posted January 17, 2015 Author Share Posted January 17, 2015 No it's not simpler. That's why I am trying to do the 95/96 route. Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted January 17, 2015 Share Posted January 17, 2015 I did the 95 swap with the non abs master , easy . I bought adapter brake lines and threaded them together so I didn't have to flare the fittings on the lines . Took about an hour to do . Link to comment Share on other sites More sharing options...
91Pioneer Posted January 17, 2015 Author Share Posted January 17, 2015 hornbrod, do you know the part numbers for the master cylinders? ABS versus non-ABS? RockAuto is no help so if I at least have OEM #s it would help. Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted January 17, 2015 Share Posted January 17, 2015 4761941 / non abs Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 17, 2015 Share Posted January 17, 2015 w/o anti-lock 4761941w. anti-lock 4761942 Link to comment Share on other sites More sharing options...
FrankTheDog Posted January 17, 2015 Share Posted January 17, 2015 I disabled the abs on a 2000 XJ. The master cylinder will work fine but you need the distribution block from a non abs. I used one off a 94 XJ and it worked fine. Do yourself a favor and switch over to cunifer brake lines, much easier to work with and longer lasting. Link to comment Share on other sites More sharing options...
Dando Posted January 17, 2015 Share Posted January 17, 2015 I used the master cylinder from my 95 XJ that had ABS, I just didn't transfer over any of the abs parts and everything works great. Link to comment Share on other sites More sharing options...
91Pioneer Posted January 17, 2015 Author Share Posted January 17, 2015 I used the master cylinder from my 95 XJ that had ABS, I just didn't transfer over any of the abs parts and everything works great. Reeaaalllly? That could be good news for me... hmmm.... Can you post a pic for me? Link to comment Share on other sites More sharing options...
cruiser54 Posted January 17, 2015 Share Posted January 17, 2015 I used the master cylinder from my 95 XJ that had ABS, I just didn't transfer over any of the abs parts and everything works great. Reeaaalllly? That could be good news for me... hmmm.... Can you post a pic for me? I've used the assemblies from both 95 to 96 XJs and one from a WJ with ABS. As stated, just use your prop valve. Link to comment Share on other sites More sharing options...
91Pioneer Posted January 17, 2015 Author Share Posted January 17, 2015 I intend to use my prop valve anyway. Sounds like I can use the master anyway which is good news. Link to comment Share on other sites More sharing options...
Dando Posted January 17, 2015 Share Posted January 17, 2015 I used the master cylinder from my 95 XJ that had ABS, I just didn't transfer over any of the abs parts and everything works great. Reeaaalllly? That could be good news for me... hmmm.... Can you post a pic for me? 95xj booster and cylinder in my 90mj : Link to comment Share on other sites More sharing options...
91Pioneer Posted January 17, 2015 Author Share Posted January 17, 2015 :thumbsup: Link to comment Share on other sites More sharing options...
SledNeck91604 Posted January 18, 2015 Share Posted January 18, 2015 I used a new 95/96 booster and master from O'Reilly's, the 1/4" spacer was made out of aluminum. I should have the spacer drawing still, I'll post up some pics of it later if i can. I then replaced my factory proportioning valve with the Wilwood adjustable proportioning valve/distribution block. The bracket, screws, and pre-bent line setup that Wildwood sells for the prop valve is near perfect. The pre-bent lines are of no use as they are both bent wrong for the application and equipped with the wrong flare nut on the master side. The other issue is the outlet for the rear on the prop valve is very very close to the inner fender. A hand bent line will work if you bend close to the flare nut. I'll try to post up some pics of this too. I used short lengths of pre-bubble flared 3/16 line to make the master connections and double flared the other end for the proportioning valve. The master flare nuts are 12mm and 10mm bubble flare and the prop valve side are all 3/8". The swap was made easier by the prop valve as I used the included brake light switch instead of grinding the booster rod to make the lights work. I might have missed something but I'll try to get some pictures up later today. Link to comment Share on other sites More sharing options...
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