GC D30

[DansGreyMj]

i heard that gcs have a better d30 and i wanted to swap in a non cad anyways would it bolt straight up or would i have to make any mods

[mjeff87]

AFAIK, they're the same animal....but the ZJ tie rod and drag link are thicker than XJ/MJ.

 

But, they would all be non-disco, and 297x joints in them, unless they are CV shafts

 

 

Jeff

[pingpong]

They are exactly the same. I am not sure about the u-joint thing though.

[Pete M]

Are you asking about ZJs or WJs?

[BRC 88MJ]

ZJ D30 is a low pinion design. Some (V8 mainly) used CV-joints instead of u-joints in the axleshaft. Otherwise, they are the same.

[Bounty Hunter]

ZJ D30 is a high pinion, same as most all but the newest XJ's. Many had CV axleshafts, easily replaceable with the ujoint axleshafts.

 

It'll bolt right in.

 

I've got a similar question, I just picked up a HP D30 non-disco with 4.10 and CV axlshafts, anybody know what it could have been out of? My quess would be something with a 4banger, but I thought no ZJ would have a 4banger. Maybe a 2.5L XJ with the 242?

[mjeff87]

prolly an 84-85 XJ with the 228/229 TC.

[pingpong]

More then likely It could have been any XJ with a 242 t-case or as Jeff said an early model XJ. One way to tell is the early model xj's SOME used regular 6 point bolts :eek:

[Bounty Hunter]

One way to tell is the early model xj's SOME used regular 6 point bolts :eek:

On what?

 

The bolts on his D30 look like all late-model D30's I've seen, but it has the early bolt-on caliper bracket instead of the later 1-piece knuckle/bracket.

[ROADLESS]

ZJ D30 is a high pinion, same as most all but the newest XJ's. Many had CV axleshafts, easily replaceable with the ujoint axleshafts.

 

It'll bolt right in.

 

I've got a similar question, I just picked up a HP D30 non-disco with 4.10 and CV axlshafts, anybody know what it could have been out of? My quess would be something with a 4banger, but I thought no ZJ would have a 4banger. Maybe a 2.5L XJ with the 242?

Our 93 GC's D30 is low pinion! (with ujoint axleshafts)

[pingpong]

I have seen 2 D30's that appeared to be un altered in the local j-yard with 6 point bolts holding the unit bearing in. These were CV shaft equipped xj's.

 

You are also right about the different style calipers too.

[minydigger]

My 94 ZJ limited has a low pinion w/ cv axles.

[whowey]

More then likely It could have been any XJ with a 242 t-case

 

No, my 88 with the 242 has regular old joints.

 

Gotta go with Jeff here. Early XJ, with the full time case.

 

BTW, my ZJ with the 249(full-time) has CV joints on the front axle.

[rejeep]

The ZJ's & TJ's are LP.. XJ & YJ are HP

[Bounty Hunter]

Ahh, never knew that about ZJ's, always learning something new.