I recently decided to regear my '95 ZJ front Dana 30 (crush sleeve style,) from 3.73 to 4.10. I want to stay with Spicer gears.

Randy's informed me that Spicer does not make a ring and pinion lower than 3.73 in a crush sleeve style but that I can use the shim style pinion in my housing.

Perhaps I got the wrong setup kit, but the front (outboard) pinion bearing race is way too small to fit the housing. So I figured maybe the old bearing would work. The old (crush sleeve style) bearing will of course fit the housing, but it won't fit the new pinion.

Anyone got a clue on this? Maybe even part numbers if i'm just getting some bad info?

Thanks,
Jay

I can't really comment on why your bearing race is the wrong size, but when I did gears in my TJ D30, I converted it from crush sleeve to shims. The install kit from Rusty's didn't have a crush sleeve and it was the first time I had ever done gears, so I was kinda confused, but he told me the same thing Randy told you...

I still have the box my install kit came in at the house. I could probably get the part number off it for ya after work, don't know if that's the same kit you would use on a ZJ though...

Dave

A ZJ Dana 30 is a low pinion, but i think the TJ uses the new short pinion setup for the 30, not sure, may be the same setup stuff and just different gears. 3.73 to 4.11 isn't much of a jump, why not 4.56 or 4.88, you've got overdrive.

I believe the D30 is the same in a ZJ as it is in a TJ, (well they're both normal cut, anyway), but...
Why can you only use Spicer gears?

I agree w/ 4Bangler: 4.56+ might be a better option to keep from having to regear later when you get real tires under it.
:D

Originally posted by JayH
I recently decided to regear my '95 ZJ front Dana 30 (crush sleeve style,) from 3.73 to 4.10. I want to stay with Spicer gears.

Randy's informed me that Spicer does not make a ring and pinion lower than 3.73 in a crush sleeve style but that I can use the shim style pinion in my housing.

Perhaps I got the wrong setup kit, but the front (outboard) pinion bearing race is way too small to fit the housing. So I figured maybe the old bearing would work. The old (crush sleeve style) bearing will of course fit the housing, but it won't fit the new pinion.

Anyone got a clue on this? Maybe even part numbers if i'm just getting some bad info?

Thanks,
Jay

You may have just gotten the wrong setup kit. Drive back up to Randy's with your old bearing and race, and maybe your pinion to make sure the bearing of the right size still fits the pinion. Odds are if you have your kit with you they'll swap the bearings/races around for free.

The ZJ 30 is the same as the TJ 30 for the first couple of years and then I believe the TJ 30 switched to a shorter pinion shaft.

I'm getting conflicting messages as to whether or not I can swap depending on who I talk to and at what time of day. Randys' says yes, Olympic says no (but I tend to trust that Randy's is better info.)

The reason for going to 4.10's isn't in debate - what's with you guys? :flipoff2: I happened upon a great deal for a nine inch third member with detroit all set up. It had 4.11's. Instead of setting up two r&p's my first time around, I decided to simply do the front and regear later once I had a little comfortability with it.

What the hell is a real tire anyway?

Jay

By the way, the 9" is one of the easiest axles to set up gears on, none of the bull puckey you're going through now, about 45 min with the 3rd member on the bench and taking your time, and gears are quite cheap for them, better to do it once than to do it over, but if it's a money problem (aren't they all) , then I can see your point.

The reason for going to 4.10's isn't in debate - what's with you guys? I happened upon a great deal for a nine inch third member with detroit all set up. It had 4.11's. Instead of setting up two r&p's my first time around, I decided to simply do the front and regear later once I had a little comfortability with it. What the hell is a real tire anyway?

Yo! JayH... marinate a sec...:D
I'm just razzin' ya. Now that you explain a little better, it's all good. I (& probly 4bangler, too) was just trying to help you out a bit w/ the gear decision.
FWIW: I think the 9" is a good choice. It's real easy to build & get parts for.
Jeep on, killa!:skull:

Originally posted by 4Bangler
By the way, the 9" is one of the easiest axles to set up gears on, none of the bull puckey you're going through now, about 45 min with the 3rd member on the bench and taking your time, and gears are quite cheap for them, better to do it once than to do it over, but if it's a money problem (aren't they all) , then I can see your point.

can't argue with that, after spending 4 days, 7 times pulling, and pressing the bearings on my D44 front, it took all of 40 minutes to do my 9". Now I see why it's so popular.

btw, not to turn this into a slam randy's fest, but I was kinda dissapointed with their setup kits too. all the shims for my D44 pinion had too small of an ID, I had to clamp them all together and hone them out just to fit them on the pinion. not a big deal, but kinda a pain, and considering what the kits costs, it's seems a little ridiculous to have to do that to make it work.

Chad

there was 2 possible front ends that rig came with in that year, without the BOM # etc it's almost impossible to tell till you tear it apart... looks liek you thought you had 1 and had the other...

Turns out I got the shim install kit for an old CJ style housing instead of the newer housings. All the parts will work with the 4.10 ring and pinion I got, I can switch to shim style setup, and it will all fit my housing if I get one new bearing/race.

The front bearing/race in the install kit was 02872/02820 and I need 88649/88610 - the same part numbers as the rear pinion bearing. hmmmmm...



When I go to regear again, I'll be sure to post a question about axle shaft sizes :flipoff2:

Jay