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Old 09-21-2015, 02:17 PM
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Old 03-31-2013, 11:44 PM
  #15721  
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Easy gear formula to play with when selecting a gear set.
Current gear ratio X stock tire diameter (in inches) / New tire diameter (in inches) = Your Effective gear ratio (what your vehicle acts like it has).
The out come of the formula should be as close to the ratio of the original gearset as possible. EX: say your Xj came with 3.55 gears, then use different gearset ratios in the first part of the formula till the awnser comes as close to 3.55 as possible.
Old 03-31-2013, 11:45 PM
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Originally Posted by Corpos

Sad to say but I saw a few xjs in the graveyard with tow packages, the other day.
Factory tow package, dealer optioned or aftermarket? What years? D44 rears were only offered for a couple years in the 80s, and could be had with 3.55, 3.73, or 4.10 gears, depending on other options. I've seen later model XJs, even with factory tow packages, that had 8.25 or D35 rear axles.
Old 03-31-2013, 11:55 PM
  #15723  
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Originally Posted by NewKindOfClown

Factory tow package, dealer optioned or aftermarket? What years? D44 rears were only offered for a couple years in the 80s, and could be had with 3.55, 3.73, or 4.10 gears, depending on other options. I've seen later model XJs, even with factory tow packages, that had 8.25 or D35 rear axles.
One was an '88 for sure, now that you mention it I think the other one I saw did have the c8.25
Old 03-31-2013, 11:58 PM
  #15724  
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Originally Posted by Corpos

One was an '88 for sure, now that you mention it I think the other one I saw did have the c8.25
'88 is your best bet. Check that one first, but it's still likely to have 3.73s. If your gears don't match, do not engage 4WD. Most people remove their front drive shaft if their axles have different gear ratios. This prevents any possible accidental shifting which would destroy the transfer case.
Old 04-01-2013, 12:04 AM
  #15725  
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I definitely don't want to be ramping up my torque just to have the axles snap on me, you know. I'm probably gonna have to bite the bullet and pop open my differential and count teeth to be absolute on what ratio I'm actually running cause I would really hate to throw $500 in the trash for a ring and pinion set that doesn't jive.
Old 04-01-2013, 12:11 AM
  #15726  
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Originally Posted by Corpos
I definitely don't want to be ramping up my torque just to have the axles snap on me, you know. I'm probably gonna have to bite the bullet and pop open my differential and count teeth to be absolute on what ratio I'm actually running cause I would really hate to throw $500 in the trash for a ring and pinion set that doesn't jive.
Send Jeep an email, and tell them you'd like a "build sheet" for your XJ. Include your VIN.
www.jeep.com/jeepcares
Old 04-01-2013, 12:15 AM
  #15727  
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Originally Posted by Outlaw Star
Easy gear formula to play with when selecting a gear set.
Current gear ratio X stock tire diameter (in inches) / New tire diameter (in inches) = Your Effective gear ratio (what your vehicle acts like it has).
The out come of the formula should be as close to the ratio of the original gearset as possible. EX: say your Xj came with 3.55 gears, then use different gearset ratios in the first part of the formula till the awnser comes as close to 3.55 as possible.
Nice tip, thanks. If I do have currently, 4.10 gears stock tire was 27" so...4.88 would put me at 4.25 with 31s
Old 04-01-2013, 12:17 AM
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Thanks for the help guys, I'll do some more digging and let you know what I come up with.
Old 04-01-2013, 12:41 AM
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Originally Posted by cherokeewilson
Ok so I just purchased a 2000 xj recently with an unknown 2" lift with worn out 30x9.5 BFG AT's I just purchased new 31x10.50 goodyear wrangler authority AT's to me they ride INCREDIBLE AND LOOK REAL AGGRESSIVE i haven't tried them out yet so my question is to anyone that can help me is I was lookin at RC 4.5" x-series lift kit because my tires rub a lil bit now obviously haha( keep in mind I am TOTALLY NEW TO THE JEEP WORLD ) I am on a REAL tight budget (2 kids a wife and all that fun stuff) so RC offers an add-a-leaf 4.5" lift kit all the reading I've been doing everyone is like its a stiff ride and so fourth and I've read about leaf spring sag my xj has 243,942mi on her and ther is no sag nothing this hands down has to be the GREATEST STRONGEST VEHICLE EVER MADE I LOVE MY JEEP!!!!! I can barely afford the add a leaf kit much less a full leaf spring pack I just need good solid advice from someone as to what to do and how difficult is it to Install I wrench on Harley's for a living at a dealership in NC so I have plenty of tools I know this is a lift and tire but I know now too after reading on some more about my year model jeep I have some really sucky diffs and axles I just need a clear answer as to what year jeep I need to rob diffs and axles from ( front & rear) to do a straight bolt in swap any info on ANY OF THIS would be greatly appreciated
P.S. sorry for not puttin punctuation marks in so everything is one run on sentence I just don't know where they go lol I didn't do well in English obviously
I did a RC 3" with add a leaf on my Xj the ride is a little stiff when it comes to small stuff in the road, like seams in the pavement. It's off road that makes the difference. IMO Im fine with it. 3" and 31s is a good setup for mild wheelin and easy on the pocket book. The higher you go the more cash you're spending (ie: SYE, gears, tie rod, swaybar links...) I got 2 kids and a wife also and if you're looking into all that stuff you're well into the thousands as opposed to $400-$500
Old 04-01-2013, 12:58 AM
  #15730  
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4 inch trail master suspension lift currently I'm running 29's. I haven't done any crazy wheeling but it's a cheaper lift and works pretty good, I'm happy with it for now.
Old 04-01-2013, 02:02 AM
  #15731  
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Get zone, dont get rough country, the zone vendor on here is great and gives an awesome discount. I paid 540 to my door with upgraded nitro shocks and a steering stabalized with the 4.5 inch add a leaf kit.
Old 04-01-2013, 08:34 AM
  #15732  
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You can install an AAL without removing the leaf pack right?
Old 04-01-2013, 08:34 AM
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Originally Posted by DieselD
You can install an AAL without removing the leaf pack right?

Yes.
Old 04-01-2013, 08:36 AM
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Ok, I just told someone you could. Wated to make sure. I've never done one, but I've always read that's how ya do it.
Old 04-01-2013, 08:41 AM
  #15735  
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You can do it either way.
Just undo the center pin, line the leafs back up, get some c clamps back on and put in a new center-pin.


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