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Old 06-05-2013, 12:56 PM   #1
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Differential questions

I have a 1990 YJ Wrangler with a 4.2 I6 with Nitto 33", I'm looking at swapping gears to a 4:10 front and back. If I buy a used sets of diff carriers with gears and change the whole carrier out can I bolt them up and only set the clearances on the ring and pinion ????

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Old 06-09-2013, 08:42 AM   #2
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Anyone have any ideas on this ?

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Old 06-09-2013, 09:33 AM   #3
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Yes that should work but get a master install kit that comes with everything you need as well as the crush sleeve for the pinion. Cause along with the carrier being changed the pinion will need to be swapped and re-torqued.
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Old 06-09-2013, 09:36 AM   #4
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You may possibly need a variety of shims to get your clearances with a new carrier.

It could be that you will be ok with just your stock shims, but is best to have it there to do it right.

Remember that you will have a shim on your pinion gear as well.
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Old 06-10-2013, 03:53 PM   #5
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Thanks, I haven't decided weather to swap the entire rear ends or what.
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Old 06-10-2013, 04:04 PM   #6
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Another option is to find a 4 banger, and just swap axles. It will save you the headache of setting the gears up and wont take you all that long.
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Old 06-10-2013, 04:54 PM   #7
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^^ If you have some other YJ's around.

I don't see many YJ parts on CL or in the junk yards. Nor do I see TJ's either.
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Old 06-10-2013, 05:00 PM   #8
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I would go find a ford 8.8 with 4.10's and a junk yard front dana 30 and call it day... have to weld new brackets not he ford and weld the tubes.. but other than that not a big deal.
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Old 06-14-2013, 07:31 AM   #9
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I had a guy tell me that if you have 3:07 gears you have to change out the carrier that had 4:10 or 4:56 gears to make it work if you want to go with 4:10 gears ???? Is this true or can you just put 4:10 gears on the stock carrier that had 3:07's ?????
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Old 06-14-2013, 09:40 AM   #10
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True. 3.07 and 4.10 are different carriers
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Old 06-14-2013, 10:32 AM   #11
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the easiest way is to swap the complete axles, gears need to be setup correctly and should really be done by someone with experience.
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Old 06-14-2013, 02:51 PM   #12
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Quote:
Originally Posted by 4Jeepn View Post
I would go find a ford 8.8 with 4.10's and a junk yard front dana 30 and call it day... have to weld new brackets not he ford and weld the tubes.. but other than that not a big deal.
This is what I was going to say. It will cost you about $400 total to do a front and rear with 4.10's. Plus you can get a limited slip 8.8. Makes no sense to regear for a 4.10 ratio.
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Old 06-15-2013, 08:41 AM   #13
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Thanks, I found a set of rear ends with 4:10's so I'm just going to do the swap. Thanks !!!!!
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Old 06-15-2013, 12:37 PM   #14
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Thanks, I found a set of rear ends with 4:10's so I'm just going to do the swap. Thanks !!!!!
Hope you arent swapping in a 35

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