kusman

I am looking at converting my xj with chrysler 8.25 to disk brakes using one of the write-ups on this forum such as this one: https://www.cherokeeforum.com/f51/re...-8-25-a-57807/

Has anyone done this? I would like to know if the parts required need to come of a zj with a d35 or d44a or do both work? The article doesn't specify, but I am worried there could be differences.

muffinman

I used the ZJ D35 for my 8.25 disc swap. Don't have first hand experience with the 44a.

cruiser54

D35 ZJ. Get the longer caliper mounting studs, wheel studs, and the "guts" from the donor vehicle's proportioning valve.

Big David

The ZJ 35 & 44a use the same rear disc brake parts.

cruiser54

Well, that makes things easy.

kusman

Thanks everyone. This is excellent news that both would work, will make finding the parts a lot easier.

HudsonN

I've heard that the ZJ D44a have the same bolt pattern as the XJ D44. (Which isn't the same as the 8.25/D35.)

Haven't confirmed it yet though.

Big David

All Jeep ZJ, XJ & TJ Dana 30, 35, 44a, & 8.25 share the exact same bolt pattern- 5 on 4.5.

WJ's & JK's have a 5 on 5 bolt pattern.

Or did you mean for the backing plates?

PocketsEmpty

This was the writeup I used.

http://www.jeepforum.com/forum/f11/z...-truth-607435/

salad

Hey, those writeups look familiar!

If you want to order new (I have bad luck when removing studs, the ends always seem to get mashed) Dorman 610-234 is what you want. If your parts store tries to substitute Paulin or other, don't take 'em. They're not actually 100% compatible - the knurled section protrudes into the rotor. Can get around it but you literally have to hammer the rotor on, grind the knurled bit off, or enlarge the rotor holes.

And YJ, KJ, MJ, LJ(TJ-U) Rubicon D44s

MJ/XJ D44 is not compatible with the rest of the family for backing plates. Holes need to be welded up and redrilled in new locations. Just slightly off

01mainexj

The zj dana 44a rear discs will work that's what I used on mine