Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: chrisjones on August 24, 2005, 07:07:16 PM

Title: XJ brake conversion.
Post by: chrisjones on August 24, 2005, 07:07:16 PM
Was parrusing one of the other club sites and saw an XJ that had had ZJ rear disks fitted.

Anyone seen a conversion like this and know how big a job it would be??
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Post by: Anonymous on August 24, 2005, 10:25:30 PM
from what I have seen it doesnt look that hard, you need the backplate off the ZJ axle for the handbrake shoes, disks, calipers, caliper hangers etc.
There is a site out there listing the mod, will look in my favs
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Post by: kizer on September 12, 2005, 07:05:41 AM
Yee ask I'll deliver.  :D

Heres mine for a ZJ to TJ Dana35 conversion
http://www.links4jeeps.com/writeups/d35discconversion/ (http://www.links4jeeps.com/writeups/d35discconversion/)

Heres a ZJ to TJ Dana44 conversion
http://www.stu-offroad.com/suspension/d44brake/bc-1.htm (http://www.stu-offroad.com/suspension/d44brake/bc-1.htm)

Heres a ZJ to XJ Dana44 conversion.
http://www.madxj.com/MADXJ/technical/te ... csOnXJ.htm (http://www.madxj.com/MADXJ/technical/technicalfiles/BAzjRearDiscsOnXJ/ZJrearDiscsOnXJ.htm)

Ive had the new discs on the rear of my TJ for two weeks. Ive noticed a difference in braking right off the bat. Im waiting for a new Proportioning valve for a 96ZJ to compensate for the rear to apply more fluid to the rear. Your brakes will fill a bit less stiff because you are more or less pushing less pressure to move the brakes. In order to get more pressure you will need a stronger Master Cylinder, however one mod at a time for my wallet.  :D
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Post by: Mike Pavelin on September 12, 2005, 08:05:34 AM
Remember that if you use ZJ rear discs you will still lose your parking brake if it gets full of mud, as it is housed in a small drum cast into the disc.
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Post by: chrisjones on September 12, 2005, 08:07:59 AM
Already found the D35 link, cool site, very cool site! :wink:
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Post by: Anonymous on September 12, 2005, 08:39:00 AM
Quote from: "Mike Pavelin"
Remember that if you use ZJ rear discs you will still lose your parking brake if it gets full of mud, as it is housed in a small drum cast into the disc.


Yea Mike is so right there, believe me!
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Post by: chrisjones on September 12, 2005, 09:30:15 AM
So an improvement on losing ya rear brakes all together when they fill with water and crap then! :lol:
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Post by: Anonymous on September 12, 2005, 10:09:54 AM
My thoughts exactly..... Tis always a wakeup on the way home to lock the front wheels at the first junction...... (to dry them off of course)

But these brake conversions seem to cost £££££.... maybe those in the know can do them cheaper.... but I am only just onto changing hubs.... and that took 2 coal chisels....!
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Post by: kizer on September 12, 2005, 05:45:14 PM
My Dana35 c-clip style change over was pretty cheap and really easy.

I paid US 270 for Junkyard parts and new rear pads.

Heck the swap was even easier on the wallet. Just cracked up the diff pulled the c-clips and axles and bolted everything back on.

Yes the E-brake pads are a bit smaller than the Drums. I'm looking at installing line locks so basically I press down the brake and push a button to hold my brakes. I like to call it a backup measure. I have a tendancy to use my E-brake and hand throttle a lot climbing and running rocky switch backs.

As well a line lock does use battery power, but its more or less a wheeling backup than a parking backup.

I haven't really experienced any mud yet with my rear discs, but the front has survived every bit of mud so there shouldn't be a reason that the rear shouldn't.

Just make sure if you swap out your rears you get the e-brake cable unless the e-brake cable connection is the same for a XJ as a ZJ on the TJ's its different.
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Post by: Bubba on September 12, 2005, 11:52:55 PM
i did a disc conversion on my scrambler before it was trashed and was plenty pleased well worth doing on any rear drum jeep