how to regear
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JK Enthusiast
Joined: Mar 2011
Posts: 354
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From: lisbon ny
how to regear
Oj so I am pretty mechanically fit. I know how to change out motors and transmissions and stuff but I never messed with gearing. I have a 2010 sport with 3.21 and can afford the parts but not the labor. How hard is it to do urself?? Do u need any special tools?? I wanna add a locker and gears up to 4.56. Anyone have suggestions or has done it before and knows how hard it is??
JK Jedi Master
Joined: Jan 2008
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From: Austin <--> Colorado Springs
JK Super Freak
Joined: Jun 2009
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From: Cashton, WI
These are the best write ups I have found as well. Goood luck....I was happy to have mine done by a shop 
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 165
From: Austin <--> Colorado Springs
I was happy to have mine done by a shop
For my daily driver / only vehicle, not a chance I was trying this myself. But it is on the agenda for some point in the future when I have secondary transportation.
JK Enthusiast
Joined: May 2011
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From: heart of dixie
Personally, I've done about every r&r conceivable on basic vehicles, and some tractors. Of all the procedures, setting up the ring and pinion has got to be the most challenging, and most deceptive. You can replace them in a few hours. BUT, without the tedious, meticulous ultra precise setup required, they'll be howling within months. I'm happy to pay someone $600 to warranty a setup. Beware though, that the evidence may not show up for 10-20k miles so avoid the posers.
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JK Enthusiast
Joined: Jun 2011
Posts: 196
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From: Tulsa, OK
As stated before, the actual work isn't that hard, it's the finish setup that is difficult, tedious and time consuming to get correct. Plus, you'll need a good quality dial indicator, magnetic stand and some patience. It would be best if you could find someone that has done it before to help you the first time. There are 'tricks' to properly setting up gears and the tolerance for error is small if you want them to last.
JK Enthusiast
Joined: Jan 2010
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From: Fort Campbell
Originally Posted by jhol111964
Personally, I've done about every r&r conceivable on basic vehicles, and some tractors. Of all the procedures, setting up the ring and pinion has got to be the most challenging, and most deceptive. You can replace them in a few hours. BUT, without the tedious, meticulous ultra precise setup required, they'll be howling within months. I'm happy to pay someone $600 to warranty a setup. Beware though, that the evidence may not show up for 10-20k miles so avoid the posers.
JK Enthusiast
Joined: Oct 2010
Posts: 271
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From: Jacksonville, FL
Don’t do it! Yea, you can save a couple hundred doing it yourself. If you mess up just the slightest measurement... add being stuck in the middle of traffic... tow truck to a professional... and then someone to fix your mistake. I am an aircraft mechanic. I am very mechanically inclined... This job is ridiculously difficult! Pay for it to be done and enjoy your better performance and gas mileage!