XJ and ZJ frontends-swapable?

5.9dreamer · Oct 26, 2006

XJ and ZJ front ends (and TJ for that matter), are all coil spring front ends, Are they interchangable? A buddy of mine's cousin blew up his 2001 XJ's frontend and wants a cheap junkyard fix so, I was wondering about interchangability. The only problems I could think of would be antilock brake sensors and gear ratios, is anything else? [smilie=bal_ask.gif] Thanks!

AndyZJ · Oct 26, 2006

I'm thinking maybe width.

I think the D30's in the front of ZJ's are wider than XJ's. But if not, then that's sweet!

modzj · Oct 27, 2006

They are the same!

A buddy of mine just put a set of rubicon axles under his. Only difference is the steering.

MJR · Oct 27, 2006

XJ/TJ/ZJ are interchangeable except for as you said. The differences would be vacuum disconnect (84-92 XJ on some), gear ratios (as you said), brakes/knuckle/rotor/unit bearing offset on some years (use the ones off the axle you have), and abs or not.

RSL · Oct 27, 2006

One other difference is the caster adjustment is done at the lower frame bracket on some & at the lower axle bracket on others. Not a problem if you have adjustable lower arms though.

MJR · Oct 27, 2006

RSL said:
One other difference is the caster adjustment is done at the lower frame bracket on some & at the lower axle bracket on others. Not a problem if you have adjustable lower arms though.

Good point. XJ's use shims and TJ's/ZJ's use a bolt kit.

BLACKZJ · Oct 28, 2006

Some XJ's are high pinion also.

MJR · Oct 29, 2006

QJETDR said:
Some XJ's are high pinion also.

84-99

sjx426 · Oct 29, 2006

Although they may interchange, there are some differences in the assemblies other than ABS, i.e. brake calipers, axle joints, etc.

grand rapids · Oct 30, 2006

they are the same. note: in 01 cherokees changed from a cast rotor to a composite rotor and also the wheel bearings are different. remember the old brake rotor recall. if you put a 01 brake rotor on a 02 wheel bearing, the rotor will bite into the knuckle. i think the width issue is incorporated into the wheels.

MJR · Oct 30, 2006

Knuckle/unit bearing mounting surface to rotor/unit bearing mounting surface measurements/bolt patterns.

84-89 1.81" XJ/YJ 5 on 4.5" kunckle to rotor mounting surface offset
90-98/99 2.12" XJ/YJ/TJ 5 on 4.5" kunckle to rotor mounting surface offset
99-04 WJ 2.12" 5 on 5" kunckle to rotor mounting surface offset
99/00-01/06 TJ/XJ 1.91" 5 on 4.5" kunckle to rotor mounting surface offset

grand rapids · Oct 30, 2006

your right, my bad, the crossover was in 99

5.9dreamer · Nov 1, 2006

Well, now I feel dumb, turns out it's a 2001 GRAND Cherokee (he just generalized and said Cherokee) , he never mentioned that little bit of info to me (the Jeep is in another state so, I have never seen it). I am really sorry about that error there. Thank you very much for all the info though! Now I guess I have to ask, what kind of interchangability is there for the 2001 Grand Cherokee's front axle? Are they the same as (or similar enough to) the rest? [smilie=bal_thanx.gif]

XJ and ZJ frontends-swapable?

5.9dreamer

AndyZJ

modzj

MJR

RSL

MJR

BLACKZJ

MJR

sjx426

grand rapids

MJR

grand rapids

5.9dreamer

Top Contributors this Month

Recommended Communities