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Old 11-10-2010, 02:48 PM   #1
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Gearing????

Front 30
Rear 35

i want to regear to 4.56's, what all do i need to do this?? im a bit new to jeeps but so far ive done most of the work myself. any information would be very helpful. i know i need the gear and pinion set and maybe the overhaul kit, someone said something about a new carrier but im unaware of what that is exactly???

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Old 11-10-2010, 05:48 PM   #2
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Hire someone to do it. Probably $500 an axle including all the parts (this was what I was quoted). I've done a lot of research on this because I am in exactly in the same boat as you. I gather (others will chime in) that re-gearing is more of an art rather than a step-by-step process like a manifold swap or lift kit install. Getting it right is very difficult.

If you are running 3.07's like me, a new carrier (the cradle that holds the spider gears) will be required. I think they run about $80 or so.

Just my opinion. I'd love to be able to do this myself, and I am leaning towards finding someone who knows how to do it and try and help so as to learn and potentially save some cash. But gearing is something that, if not done spot-on, will come back to haunt your ends.

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Old 11-10-2010, 05:51 PM   #3
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as said unless you know what your doing or have a buddy who can help you who knows what they are doing.. find a good shop and pay to have it done.

One other thing to consider... do you plan to upgrade the rear axle shaft at all? Now would be the time to upgrade vs down the road. Super 35 kit perhaps.
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Old 11-10-2010, 05:54 PM   #4
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If you do a search on here you will find almost everyone agrees with Splnkr and suggest you find a good shop to do it. I was hoping to do mine myself but after reading many post decided it was worth paying a good shop to do this mod.
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Old 11-10-2010, 06:03 PM   #5
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We have three or four shops around here but no one is wild about doing gears in a Wrangler ? I,m thinking alot of people are fixing the old car and not buying a new one . But the good news is I talk to a guy today that said he would be happy to do my gears ths winter . He has alot of years in the shop so we will see .

I,m going with 4.10,s as most of my driving is on the road .

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Old 11-10-2010, 08:40 PM   #6
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Quote:
Originally Posted by AdrenalineJunky45 View Post
Front 30
Rear 35

i want to regear to 4.56's, what all do i need to do this?? im a bit new to jeeps but so far ive done most of the work myself. any information would be very helpful. i know i need the gear and pinion set and maybe the overhaul kit, someone said something about a new carrier but im unaware of what that is exactly???

If you're getting a new set of gears the overhaul kit should not be a maybe. It should be a must. You'll already have everything out of the axles anyway, you might as well put new bearings on it. A good master install kit will have everything you need: shims in abundance and even two crush collars in case it doesn't get crushed quite right the first time.

For the D30 the case break is 3.54 and down / 3.73 and up.
For the M35 the case break is 3.31 and down / 3.55 and up.

So if you have 3.07 gears now you will need a new carrier front and back to go numerically higher than 3.73.

If you have 3.55 now you would need a new carrier for the front, but not the rear if going numerically higher than 3.73.

If you have 3.73 now, you don't need new carriers.
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Old 11-10-2010, 10:24 PM   #7
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Old 11-10-2010, 10:31 PM   #8
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Find a shop to do it for you it is a better way to go about it. Also conisder putting in lockers at the same time. They dont charge anymore to put in a locker.
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Old 11-11-2010, 05:40 AM   #9
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WOW. A must read article.......


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