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Old 10-03-2011, 02:41 PM   #1
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Who here re geared there own JK

I have 4.5in lift and 35 tires.
How many people actually re gear themselves, or do you all take it into a shop for the work?

Details......?

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Old 10-03-2011, 02:47 PM   #2
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If you don't plan on doing gears on anything else it probably isn't worth it to do it yourself unless you've already got the tools to do it yourself. But if you had the tools to do it yourself you probably wouldn't be asking. If you have to buy all the special tools needed to do it right and in a reasonable amount of time it will cost you less to pay someone else to do it.

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Old 10-03-2011, 02:51 PM   #3
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its not hard, but you HAVE to know what your doing or you will destroy everything you just installed
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Old 10-03-2011, 11:01 PM   #4
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I've done everything myself. Except gears. To risky. Shop around and find a good deal on install
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Old 10-03-2011, 11:32 PM   #5
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I've done them. There is a pinion gear with bearing and crush sleeve. There is a preload on the bearing, which ultimately give you proper loading and pattering on the ring and pinion.

If you screw this up, you will toast the rear end within 50 miles.

Separately there is/may be a shimming of the carrier. That's the guts of the pumpkin. The carrier holds the ring gear - it may be an LSD, Detroit, ARB, Eaton, Auburn, etc.

In a nutshell, if all is too tight (no play) you'll burn a bearing, it'll get sloppy, and will probably ruin the ring and pinion. Too much slop, and you'll hear a clunk, it'll ruin the ring and pinion. The pattering is how they mate - normally there is a "feelable" play.

Not sure, take it to a shop that does rear ends, let them do the work and warranty it.
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Old 10-04-2011, 09:01 AM   #6
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All good advice-especially since you'll be using 4.88/5.13, or 5.38s--you can't just installem--try for a while and then ADJUST--

It's either "RIGHT" or "WRONG" and can be an expensive mistake--get it done!

My 5.38s were expensive and I'd hate to have to replace, because of something I'd done--

Shop around, you'll probably getta better warranty if you find a good shop--let them buy the gears/kits/fluids and then do the installation !!

Good luck

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Old 10-04-2011, 09:33 AM   #7
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Quote:
Originally Posted by JIMBOX View Post
Shop around, you'll probably getta better warranty if you find a good shop--let them buy the gears/kits/fluids and then do the installation !!
Truth! If you provide anything for the install it will be an opportunity for them to not stand behind the job. It isn't worth saving $20 on the gear sets to lose the installers warranty.
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Old 10-04-2011, 12:10 PM   #8
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I did my own in my brother-in-law's shop. He was there to help and to double check my work. Took about 12 hours of HARD labor. Took his longest 3/4" drive ratchet with a 4' cheater to crush the crush sleeve. Holding the pinion still while pulling on the cheater was interesting to say the least. Took both of us!

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