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Old 04-13-2010, 11:56 PM   #1
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Default XJ Disc Brake Upgrade.

I have heard that you can put ZJ rear disc brakes on a XJ. Is this true? If so what years and what parts are needed? Will it work on all XJ's? Is there a write up on here already that explains how to do this upgrade?

Thanks
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Old 04-14-2010, 01:09 AM   #2
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g - o - o - g - l - e
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Old 04-14-2010, 01:44 AM   #3
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^^ lol

In short form, find a ZJ and take everything for the rear brakes.

Here is a quick link, http://www.madxj.com/MADXJ/technical...rDiscsOnXJ.htm
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Old 04-14-2010, 02:53 PM   #4
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95-98 models.
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Axles, bit of lift and tars, what else do you need

What I lack in technique I make up for with skinny pedal.

RE short arms with drop brackets, 6" Rusty's TJ coils, RE 4.5" leaves, HD Offroad shackle relos, 2" shackle, D44 with chromos and a Spartan (welded), D60 Hobart locked with chromos, 38" TSL Bias on Eaton Beadlocks front and DIY beadlocks rear, partial cage, lots of rock love and a Warn for when I thought I could but was wrong.
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Old 04-14-2010, 04:25 PM   #5
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im confused. the link to madxj says he's doing the swap on a 87 XJ with a D44 will the swap still work for the Crysler 8.25 axle??
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Old 04-14-2010, 05:13 PM   #6
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Yes, it will still work. Just google 'zj rear disc swap' you will get a hundred write ups on the subject. Its easier then me tryin to explain it without pictures.
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Old 04-14-2010, 05:24 PM   #7
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The swap to a D35 is a direct bolt on with no mods. To an 8.25 it is the same accept the center opening has to be enlarged slightly to accommodate the 8.25. If you do a search on this site and Google you will
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Old 04-14-2010, 05:34 PM   #8
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I just installed it on mine, works great with parts off the ZJ, and its not hard either.
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Old 04-14-2010, 05:44 PM   #9
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Here are some links to different swaps.

ZJ Rear Disk Brake Conversion on corporate 8.25 axle.

http://home.swbell.net/rriojas3/reardisk.html

ZJ to XJ D35 ( with ABS should also be same for non ABS )

http://jeep.blackonyx.net/pdfs/zjreardiscs.pdf
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Old 04-14-2010, 07:25 PM   #10
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I read this mod was just a little drilling and no welding involved though?
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Old 04-14-2010, 07:28 PM   #11
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Quote:
Originally Posted by redneckfive View Post
I read this mod was just a little drilling and no welding involved though?

There is no drilling or welding unless you have a d44, then you need to fab a little spacer. Otherwise all you need to do is grind the center hole a tiny bit and it bolts right on.
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Old 04-14-2010, 07:34 PM   #12
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Well shoot. I just put a 44 in two weeks ago.
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Old 04-14-2010, 10:30 PM   #13
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ZJs also came with a 44. Might not have to do the welding but not sure I put them on a turdy five and it was a bolt on thing. Now if they just worked on my 60.
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Axles, bit of lift and tars, what else do you need

What I lack in technique I make up for with skinny pedal.

RE short arms with drop brackets, 6" Rusty's TJ coils, RE 4.5" leaves, HD Offroad shackle relos, 2" shackle, D44 with chromos and a Spartan (welded), D60 Hobart locked with chromos, 38" TSL Bias on Eaton Beadlocks front and DIY beadlocks rear, partial cage, lots of rock love and a Warn for when I thought I could but was wrong.
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Old 04-14-2010, 10:49 PM   #14
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Do you happen to know what years ZJ came with a 44?
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