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-   -   Noob Question on Re-gearing (http://www.wranglerforum.com/f274/noob-question-on-re-gearing-139819.html)

NFRs2000NYC 02-15-2012 06:53 AM

Noob Question on Re-gearing
 
Just out of curiosity, I have a few regear questions. I'm new to Jeeps, so please bare with me....

1) When you re-gear, do you need to do both the front AND rear diffs, or just rear only?

2) Most of the time, is it a core exchange thing? Like you buy a D44 with 4.88s in it, then ship back your OEM D44 for a core exchange? If so, anyone you know online that does this?

3)Can the 2012's with auto's be re-geared yet?

GREEN-MACHINE 02-15-2012 07:47 AM

1- yeas you have to regear both front and rear axles, if you do not you will cause major damage to your drive line, because the wheels front and rear will not be turning at the same speeds.


2 core exchange, yes you can remove the axles ,,,, but thats a major job, its best and cheaper to have a shop do it while the axles are still in the jeep. prices range anywhere from 1500 to 3k for a regear

3- yes 2012 can be regeared, although you will need a pro-cal or other tuner to let the ecu know what you have done, this will fix your tranny shift points and your spedo will work correctly.

hope this helps, good luck

daggo66 02-15-2012 07:51 AM

Quote:

Originally Posted by NFRs2000NYC (Post 2033086)
Just out of curiosity, I have a few regear questions. I'm new to Jeeps, so please bare with me....

1) When you re-gear, do you need to do both the front AND rear diffs, or just rear only?

You need to do both.

Quote:

Originally Posted by NFRs2000NYC (Post 2033086)
2) Most of the time, is it a core exchange thing? Like you buy a D44 with 4.88s in it, then ship back your OEM D44 for a core exchange? If so, anyone you know online that does this?

No. Think of what the expense would be for shipping your axles. :eek:

Quote:

Originally Posted by NFRs2000NYC (Post 2033086)
3)Can the 2012's with auto's be re-geared yet?

I can't help with this one.

OH9JK 02-15-2012 09:20 PM

These guys know gears: eastcoastgearsupply.com

kbwwolf 02-15-2012 09:24 PM

Quote:

Originally Posted by NFRs2000NYC (Post 2033086)
3)Can the 2012's with auto's be re-geared yet?

Yes.

MTH 02-15-2012 10:16 PM

I believe you can regear just the rear so long as you don't engage 4wd, no? Certainly if you disconnect the front driveshaft. Might let you split the install costs over two appointments.

Mwerley2012 02-15-2012 10:19 PM

Quote:

Originally Posted by MTH
I believe you can regear just the rear so long as you don't engage 4wd, no? Certainly if you disconnect the front driveshaft. Might let you split the install costs over two appointments.

You can but then it's not a Wrangler... It's a mall something

InvertChaos 02-15-2012 10:19 PM

Quote:

Originally Posted by MTH (Post 2036396)
I believe you can regear just the rear so long as you don't engage 4wd, no? Certainly if you disconnect the front driveshaft. Might let you split the install costs over two appointments.

That is true, but then again, what is a Jeep without 4wd!

MTH 02-15-2012 10:29 PM

Quote:

Originally Posted by Mwerley2012

You can but then it's not a Wrangler... It's a mall something

Quote:

Originally Posted by InvertChaos

That is true, but then again, what is a Jeep without 4wd!

Agreed. Again, I only suggest it so as to stagger install costs, not to turn it into a permanent 2wd. :eek:

NFRs2000NYC 02-15-2012 11:49 PM

I actually think that due to the Wrangler's excellent residual value, it might make sense later on to trade in for a 4.10 Rubicon. The money I lose will be almost the same. If you factor in wear and tear, I might actually come out on top.

seanpholman 02-15-2012 11:57 PM

JT's Parts and Accessories can also build complete axles, using Mopar D44 housing and ship them as a bolt-on unit. Not cheap, but makes for an easy swap.

JTs Parts & Accessories, Justdifferentials.com

--Sean

NFRs2000NYC 02-16-2012 12:34 AM

Quote:

Originally Posted by seanpholman (Post 2036823)
JT's Parts and Accessories can also build complete axles, using Mopar D44 housing and ship them as a bolt-on unit. Not cheap, but makes for an easy swap.

JTs Parts & Accessories, Justdifferentials.com

--Sean

So one is looking for about 4.5K for both. I wonder what the value of the entire OEM axle set is. The problem with re-gearing (and I've experienced this when re-gearing my sports cars) is that it is SUCH a sensitive and specialized job, that most shops are simply not qualified to do them.

i82much 02-16-2012 01:00 AM

Quote:

Originally Posted by NFRs2000NYC (Post 2036800)
I actually think that due to the Wrangler's excellent residual value, it might make sense later on to trade in for a 4.10 Rubicon. The money I lose will be almost the same. If you factor in wear and tear, I might actually come out on top.

Not sure what your specific situation is, but I think the decision whether to get a Sport or Rubi often comes down to whether the 4.10's are going to be sufficient for whatever tire size you intend to run. If not, you are regearing either way so may as well get the Sport and possibly install lockers when you regear.

Me, I think the stock Rubi package is sweet, 2 door '12 with a stick and 4.10's is perfect for me.

NFRs2000NYC 02-16-2012 01:03 AM

Quote:

Originally Posted by i82much (Post 2036933)
Not sure what your specific situation is, but I think the decision whether to get a Sport or Rubi often comes down to whether the 4.10's are going to be sufficient for whatever tire size you intend to run. If not, you are regearing either way so may as well get the Sport and possibly install lockers when you regear.

Me, I think the stock Rubi package is sweet, 2 door '12 with a stick and 4.10's is perfect for me.

I have a 2012 Sahara 3.21s/Auto that I am very happy with. Most of my daily driving is 70mph, and the 3.21s are perfect for that speed. I wanted 35" tires for the look, but members quickly talked me out of them. At this point, I am just trying to learn as much as I can about Wranglers, so that when the time comes, I can make an informed decision.

i82much 02-16-2012 01:22 AM

Quote:

Originally Posted by NFRs2000NYC (Post 2036940)
I have a 2012 Sahara 3.21s/Auto that I am very happy with. Most of my daily driving is 70mph, and the 3.21s are perfect for that speed. I wanted 35" tires for the look, but members quickly talked me out of them. At this point, I am just trying to learn as much as I can about Wranglers, so that when the time comes, I can make an informed decision.

Got it. In that case, at least keep in mind that the gearing of the new auto is different than the old 4 speed. You shouldn't need as "steep" (numerically high) gears with the '12 auto as previous autos.

You're already running a 32 if you have a Sahara. Swap the stock tires out for some Rubi takeoffs (same size) and with the BLD you will go just about anywhere you would want to take a brand new vehicle.


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