Help! What axel upgrade should I do! Please help!

mbryson

.......a few dollars more
Supporting Member
i dont want 4.56 gears, i want 4.88 or lower. i cant seem to find one for $50-$100 in the right width. so unless some one wants to narrow it for me for free, that is going to cost me a butt load aswell. not every body wants full width axles.;)


My full width axles are 77" sidewall/sidewall on the front and 75" sidewall to sidewall on the rear. :D :D I bet it's similar to what you're running in your XJ.
 

Jeremy

total tacoma points: 162
so now, not only do i have to buy gears and a locker, (because the detroit that came in your $50.00 axle probably wont work with the 4.88 or 5.13 gears. i could be wrong) now i have to find some duelly hubs and or hummer wheels.
 

92jeepSUT

Member
i installed a ford 8.8 rear axle out of a exploder and i love it i abuse the hell out of it i know its a c lip axle but it feels alot more solid than the chrysler 8.25 i had in it plus it is just way more beefy than a 35 0r 8.25...and they are really easy to install.....
oh and most of the 8.8 exploder axles have rear disk the good thing is your brake lines go right into the ford axle......not a whole lot o modification involved and they are the same lug pattern as your front axle....
 
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Jeepin' Josh

Black 2001 XJ
Location
Spanish Fork
alright if I stay with 33s I can keep my stock axles and just upgrade to alloy shafts to give me confidence on the hard wheeling... but if I go up to 35s I probably need the beefier axle.. what axel is cheapest and easiest to put on? The Ford 9" or the XJ 44.. (I have a front and rear 44 off a 88 waggy) (buddy's backyard for $300) but it's a new bolt pattern... and would have to rebuild it more than likely..
 

mbryson

.......a few dollars more
Supporting Member
alright if I stay with 33s I can keep my stock axles and just upgrade to alloy shafts to give me confidence on the hard wheeling... but if I go up to 35s I probably need the beefier axle.. what axel is cheapest and easiest to put on? The Ford 9" or the XJ 44.. (I have a front and rear 44 off a 88 waggy) (buddy's backyard for $300) but it's a new bolt pattern... and would have to rebuild it more than likely..


I'd not spend any money to go with the 33" tires EXCEPT for considering to swap out the D35. I'd wager the front would do OK with the 35" tires with alloys, but why spend the money on the D30?

XJ 44 is bolt in. It's by far 'easiest'. I'd count on going through the D44 to make sure it's 'kosher'.
 

Jeepin' Josh

Black 2001 XJ
Location
Spanish Fork
my buddy has about 20 9" axels so if that's easy for the back that would solve that.. I hear parts are cheap for it... but is the 44 front and the 9 inch rear same bolt pattern or depends on year or what?
 

mbryson

.......a few dollars more
Supporting Member
Ok now is the XJ 44 and the old 44 out of the wagoneer the same or no?

If it's an XJ Wagoneer.......... (thank the Jeep marketing dudes for that point of confusion)

....an FSJ (available with a V8 from the factory) will be 6 lug. If you're ready for that (new wheels, fabbed brackets, etc.) they're not a bad option, but......
 

Jeepin' Josh

Black 2001 XJ
Location
Spanish Fork
it is a 6 bolt... and I am buying new wheels anyway.. need the backspacing.. stock ain't workin... (no kiddin huh) but what i'm wondering is what is that ford 9" and is it really that easy and cheap and what bolt pattern cuz that waggy 44 is a 6x5.5 so I want to do as little work as possible and as cheap as I can.. I'm not cheap just getting new tires.. lift (long arms) and wheels and axles.. ya know... SO Waggy 44 6 bolt OR ford 9"????? what do I go with in the rear for easy of install and rebuild price...
 

mbryson

.......a few dollars more
Supporting Member
it is a 6 bolt... and I am buying new wheels anyway.. need the backspacing.. stock ain't workin... (no kiddin huh) but what i'm wondering is what is that ford 9" and is it really that easy and cheap and what bolt pattern cuz that waggy 44 is a 6x5.5 so I want to do as little work as possible and as cheap as I can.. I'm not cheap just getting new tires.. lift (long arms) and wheels and axles.. ya know... SO Waggy 44 6 bolt OR ford 9"????? what do I go with in the rear for easy of install and rebuild price...


I don't think this is going to be as easy as it sounds like you want it to be. You'll have to make a decision on what YOU want to do. The 9" is probably the axle with the most aftermarket support out there. They come stock with 5 on 5.5" (as far as I know--maybe they're available in other bolt patterns?). Your factory XJ (that you "mob") is 5 on 4.5" so the XJ D44, XJ 8.25 29 spline or the F*rd 8.8 is the way to keep it cheap if you don't replace the front axle. I'd not be surprised if you could get the 9" in 6 on 5.5", or maybe even 5 on 4.5" (that I doubt, but ....)

I AM cheap if I don't have to spend money to make something reliable, but my first priority is reliable for the $$$.

33" tires, a D30/D44 or D30/8.8 or D30/8.25 you should have good/exellent reliability/capability and be able to keep your lift to about 4.5"

35" tires, a D30/D44 or D30/8.8 or D30/8.25 or D30/Toy 2WD with have OK reliability, but I'd take some extra shafts with you for the D30 and the tools to change them. You can keep your 5 on 4.5" wheels with any of those.

35-37" (maybe even 37-38" tires) a D44 will work OK, but if you "mob" the D44 it could have axle joint issues without upgrading to alloy axles and probably some cooler joints. Take your pick of lug patterns.....pretty much everything available EXCEPT 5 on 4.5"---TONS of options here---D44/D44, D44/9", D44/??, D60/D60, D60/14 bolt......pretty much anything you have but I'd stay away from a GM 10 bolt rear---I do know of quite a few guys with D44 running bigger tires with few/no issues. Again, it's up to you.

36"-42" tires (which I'd never suggest hanging off an XJ unless you think you know what you're doing), I'd just move to an 8 lug pattern and a front 60. There's been TONS of debate about the vailidity of a D44 for tires that big, but for my money, I'd not settle for anything less than a D60 front. Alloy shafts in a D44 will/could work depending on how you drive and how good of a driver you are.

I don't know that I can explain anything better than that. YMMV and other people will have different opinions. Those are mine. Again, for the XJ I'd plan on staying 35" or less (you end up with an uber modded wet noodle that you reinforce a lot with bigger tires--ask almost anyone that done it and they'll let you know) and for my money, I'd stay with the stock D30 front (preferably non-disconnect) and use an XJ D44 or XJ 8.25 and run 33" tires.
 

Milner

formerly "rckcrlr"
The only 9" that will be close to the same width as your stock axle is from an Early Bronco. They are pretty hard to come by. Bronco guys and hot rodders eat them up. Other 9" will be wider....Not all 9" axle are equal. Some are 28 spline, some are 31 spline axles, some 28's can be upgraded, some can't. There are also differences in the housings, shape, tube thickness etc....
Car 9" also has a different lug bolt pattern
Also, depending on lift, the low pinion on a 9" my become and issue and even with 4" of lift, you would need to do a slip yoke eliminator on the t-case.

The easiest and cheapest in the long run is to find an XJ 44.

Another 6 lug option is the dana 44 from a Izuzu rodeo....
Some people have even used toyota rear axles:eek:
 

Jeepin' Josh

Black 2001 XJ
Location
Spanish Fork
OK GUYS!!! Thanks! I think I got it figured out... Thanks to your help... I'm going to sell my 36's get 35s for moab and run 33s around town.. I'm gonna do a alloy kit in the front on my 30 and go with the xj 44 in the rear with a whole new rebuild kit in it and re gear it... now.. the next question... what gearing do I want to put in it? I have pretty much lost most top end after the new muffler lift and tires so it needs new gearing and an intake anyways i think.. so what gearing for the xj 44.. also so you know.. I'm going with the short shaft kit or the extreme short shaft kit within the next couple months...
 

Milner

formerly "rckcrlr"
OK GUYS!!! Thanks! I think I got it figured out... Thanks to your help... I'm going to sell my 36's get 35s for moab and run 33s around town.. I'm gonna do a alloy kit in the front on my 30 and go with the xj 44 in the rear with a whole new rebuild kit in it and re gear it... now.. the next question... what gearing do I want to put in it? I have pretty much lost most top end after the new muffler lift and tires so it needs new gearing and an intake anyways i think.. so what gearing for the xj 44.. also so you know.. I'm going with the short shaft kit or the extreme short shaft kit within the next couple months...

I would say 4.56 is a good choice....I ran 4.10's with 33's and wished for a little lower, but it was nice to be able to cruise at 80mph
 

Meat_

Banned
Location
Lehi
Badger had 4.56's in his D30/8.25 with 35's it wasn't quite low enough to do anything in 2 hi, it did alright on the road but if it were me I'd want 4.88's.
 

AINT SKEERED

Balls to the Walls
Location
Salt Lake
Badger had 4.56's in his D30/8.25 with 35's it wasn't quite low enough to do anything in 2 hi, it did alright on the road but if it were me I'd want 4.88's.



4.56 is as low as you go in the 8.25 . If you get the 44 you can do 4.88's which is the lowest the 30 will go.
 

PolarXJ

HO-P
It depends on the transmission you have. AX-15 and 4.56, AW-4 4.88.
Another great site to get info for the xj is naxja.org
 
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