orange xj

ok i have got a d35 witch has to go so i picked up a chrysler 8.25 and figured i would convert it to disc breaks while its off the truck...buttttt i cant for the life of me find rear caliper brakets for the thing does anybody know were i can get some cheap or if u have them and are willing to sell em..need brakets and calipers

orange xj

i heard you need zj brackets and calipers witch are off a 93-98 grand cherokee if im not mistakin

90 xj

im pretty sure the zj disks work good. and i hear the 8.25 is the easiest to do it too

rollingstone

I think there's a write up on this. You can use everything off a zj you just have to enlarge the hole on the backing plate. Don't forget the proportioning valve.

truckntractorhick

strip a liberty's rear axle and you golden!

bajaxj

Here are the links.

Liberty
https://www.cherokeeforum.com/f51/li...nversion-7695/

ZJ
https://www.cherokeeforum.com/f51/re...-8-25-a-57807/

orange xj

thanks for the links guy now if i can only find backing plates

Ryan65r

I did the ZJ swap on mine and it was an easy job. Just a bit of grinding and your good to go. I think the liberty E-brake cables are a match for length though. The ZJ E-brake cable is too short on the passenger side. Also, you dont have to swap the proportioing valve, they work just fine without it. Its up to you.

orange xj

i just cant find the damm backing plates..i can get the caliper on the bracket from my job

MWildmann

Huh? The backing plates and caliper bracket are all one unit riveted together. I did this swap on mine, might be the best mod i've done so far. Braking is now effortless and totally controlled. I didn't use the ZJ prop valve, so i don't know if you'll see any further improvements with it.

Evil Drew M

You will.

The people who say you don't need the ZJ proportioning valve haven't used the ZJ proportioning valve.

Sure it works with the XJ valve - but it works much better with the ZJ valve.

On the parking brake setup - I looked at a bunch of options and ended up using the XJ cables. I had to trim the spring and then loop the cable/cable clamp it but it works fine.

I couldn't really come up with a better alternative - and I had ZJ cables at my disposal.

orange xj

so i just need to buy the caliper? i think theres somthing else needed to mount the caliper to the axel witch was the backing plate i thought?

MWildmann

Parts list as follows: calipers, pads, rotors, backing plate/caliper bracket, parking brake shoes and hardware, studs and nuts from donor axle to mate bracket to housing, longer lug nut studs (if using aluminum wheels), soft brake lines and ZJ prop valve (optional as far as i'm concerned).

I rebent, shortened and reflared my hard lines as they will be too long with the disc setup, you could also get creative looping/bending them to take up the extra length. Be careful though, don't want to kink them. You'll also have to figure out a way to mount the inside end of the soft line to the axle. I drilled a hole in the axle housing, tapped it and bolted the free end of the soft line down. I've seen other guys weld it on, i didn't have access to a welder at the time. If you do this, seal it up with some RTV.

Celticclove

Off what year of zj

knightrohulk

I think late 90s. Got mine off a 98. Grind the caliper bracket to fit the axle tube. Then bolt on. Easy and works great.