i've got a '94 with the 8.25 rear and im wanting to convert it over to rear disc brakes... but i really dont want to buy the parts i'd rather go to a junkyard and get what i need to do it myself... so whats the best way to convert them over? i was thinking of using the brakes off of a ford explorer... but i figured someone on here might know better.
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Rear disc brakes
- Thread starter Sephrion
- Start date
RichP
NAXJA Forum User
- Location
- Effort, Pa
Get the brakes off a rear disc ZJ grand, 96 or so. it's pretty much a bolt on operation, you do need to pull the axles though to get the new backing plate on. Best part is it's all jeep parts 
http://geocities.com/dcpaschal/mitch.html
http://geocities.com/dcpaschal/mitch.html
ASJackman
NAXJA Forum User
- Location
- Fayetteville, NC 28303
well, the amount of money that you paid doing it yourself could've been saved by getting this kit:RichP said:Get the brakes off a rear disc ZJ grand, 96 or so. it's pretty much a bolt on operation, you do need to pull the axles though to get the new backing plate on. Best part is it's all jeep parts
http://geocities.com/dcpaschal/mitch.html
http://www.crawltech.com/catalog/product_info.php?products_id=881
unless there is something i am missing with the kit.
RichP
NAXJA Forum User
- Location
- Effort, Pa
Look at how many different model parts those kits are made up of. Geeze, caddy parts, other GM parts, probably a few Ford parts thrown in for variety too not to mention a little custom machining on them, what do you do if they go out of business or drop the line. Thats what always bothered me about them. You can also save money by getting the backing plates from a boneyard too. From a yard you could get the plates, rotors, calipers and most of the hardware.
kewlkatdady
NAXJA Forum User
- Location
- Mansfield TX
I know you can use the ZJ brake on a D35....Is it the same on the 8.25?
SyCo
NAXJA Forum User
- Location
- Spokane, WA
ASJackman said:
Wrong, I just paid $40 for the brackets with the e-brake hardware and dust shields, then another $40 for loaded calipers. Add in rotors, let's say $40 a side, Currie brakeline kit to adapt the calipers to the hardlines (part #6013) for $40, Grade 8 bolts to replace the retaining studs $8. That puts me at $208 total. If I had to rebuild the e-brakes and replace the pads, put in say no more than $80 for that, and it's still cheaper.
Also DC4WD sells the TeraFlex disc conversion which is the exact same thing pictured for like $350 shipped last I heard.
BennettXJ
NAXJA Forum User
- Location
- Raleigh, NC
ZJs didnt use the 8.25, so that wont workkewlkatdady said:
altho i thought someone mentioned using a KJ (i know, i know) 8.25 since they have discs
IMO, youd be better off in the long run putting that $200+ towards an 8.8 out of an exploder. hell, you can find the housings for cheap, and if you cant weld on the perches yourself, thats not too exp either. most have an LSD in there too. sell your 8.25 and youve recouped a lot of the cost and have a MUCH better rearend.
-Bennett
SyCo
NAXJA Forum User
- Location
- Spokane, WA
kewlkatdady said:
http://geocities.com/dcpaschal/mitch02.html
http://home.swbell.net/rriojas3/reardisk.html
From what it looks like all you need to do is enlarge the the holes on the backing plate and caliper bracket, get some longer flange studs and you're good to go. I should be finding out first hand within a few weeks.
SyCo
NAXJA Forum User
- Location
- Spokane, WA
Sephrion said:
I hear ya friend. That's why I bought the ZJ brake hardware to bolt to my 8.25. I should have a D44 sitting in my garage in a few weeks too, and when that's ready to go under (different gearing) I can easily pull the ZJ brakes off the 8.25 and bolt them to the XJ 44. I'm a CCB mechanic (certified cheap bastard).
AndyS
NAXJA Forum User
- Location
- Shrewsbury, MA
Like Bennett said, go boneyard hunting for an '04 or newer KJ (Liberty). I'm not sure if disks were an option prior to '04's, but they all have rear disks from '04 onward, and they use an 8.25 rear end, so it'll be a bolt-on job. Plus, you have the convenience of factory parts.
My wife's '04 KJ stops like you've hit a brick wall compared to my '94 XJ with just 31's on it. BIG difference in both braking power, and in fade resistance at highway speeds. I wonder if she'd notice if her disks suddenly became drums.... :laugh3:
My wife's '04 KJ stops like you've hit a brick wall compared to my '94 XJ with just 31's on it. BIG difference in both braking power, and in fade resistance at highway speeds. I wonder if she'd notice if her disks suddenly became drums.... :laugh3:
