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Old October 19th, 2007, 09:20 AM   #1
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Default re-gearing

I'm setting up to re-gear my 03 Rubi and of course I have a bunch of questions that I can't find direct answers to even after reading through 15 pages in this section.

First off, gear ratio. Of the places I've glanced at online so far the highest I find is 5.13's. I'm still debating on whether my final tire size will be 35 or 37 and my worry is if I go with the 37's I don't know if 5.13 is enough. It's still my DD, but sees little to no highway use.

Second question: brand. I'm leaning towards the superiors right now since I've heard mixed luck with Yukon's and another brand.

Third: shafts. Some folks say upgrade the axle shafts and others say the rubi ones are ok with proper gearing. I had seen a year ago that folks were big into the new chromoly shafts for the 44. Is it necessary? If I actually did break one I would most certainly replace it with something stronger than stock as I just do that sort of thing.

Finally: since KB moved to Tenn, who else locally(Westland) does gear installs? I really don't want to take it all the way out to DTS.
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Old October 19th, 2007, 05:08 PM   #2
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Kevin at jeeperz creeperz is close to you. If you aren't going to drive to DTS than JCR is too far, but they do have the gas card option...

Go with Alloy shafts and the 5.13's will support both size tires.
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Old October 19th, 2007, 05:23 PM   #3
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manual=4:88s
auto=5:13s
(rule of thumb)

FWIW, I too will most likely be upgrading to Alloy USA Chromoly axles with thicker splines and also re gear to 5:13s on my Jeep when I move up to 35s.

Last edited by Rubicon06; October 19th, 2007 at 05:29 PM.
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Old October 19th, 2007, 07:29 PM   #4
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Something like this?

was that a jab KB :)

I'll probably end up getting what I need from porc, but need an installer.
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Old October 20th, 2007, 09:56 AM   #5
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Something like this?

was that a jab KB :)

I'll probably end up getting what I need from porc, but need an installer.

NOPE that was a right hook bitch!!!

Kevin or JCR give them a call
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Old October 22nd, 2007, 01:05 PM   #6
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I could switch to alloy shafts now right and swap gears later? I'm trying to time my gears so I do them shortly before swapping tires preferably. Although, 5.13's with 33's might be interesting :)


Also, Rubi stock 44's are 30 spline correct? I can't figure out if I should be looking at the 30 splines with no mention of locker or the ones that say come without locker. Is there a length difference I'm missing?

Last edited by Lothos; October 22nd, 2007 at 03:24 PM.
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Old October 23rd, 2007, 06:27 AM   #7
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Old October 23rd, 2007, 09:57 AM   #8
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Originally Posted by Lothos View Post
I could switch to alloy shafts now right and swap gears later? I'm trying to time my gears so I do them shortly before swapping tires preferably. Although, 5.13's with 33's might be interesting :)


Also, Rubi stock 44's are 30 spline correct? I can't figure out if I should be looking at the 30 splines with no mention of locker or the ones that say come without locker. Is there a length difference I'm missing?
Yes, you can do the alloy shafts now and the gears later, but you'll be pulling the front shafts twice.

Rubicons are 30 spline inners. Any D44 locker would work, but you'd lose the factory air locker (obviously).
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Old October 23rd, 2007, 10:08 AM   #9
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Yes, you can do the alloy shafts now and the gears later, but you'll be pulling the front shafts twice.

Rubicons are 30 spline inners. Any D44 locker would work, but you'd lose the factory air locker (obviously).
I've pulled the front shafts i can't count how many times this year.

I don't plan on removing the OEM lockers. My concern was specifically which part # I should be looking at. There are both 30 and 33 spline 44's with and without lockers and with no mention of a locker at all. Is the part # for the shafts without locker the same as the shafts with no mention of a locker at all?
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Old October 23rd, 2007, 11:09 AM   #10
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Originally Posted by Lothos View Post
I've pulled the front shafts i can't count how many times this year.

I don't plan on removing the OEM lockers. My concern was specifically which part # I should be looking at. There are both 30 and 33 spline 44's with and without lockers and with no mention of a locker at all. Is the part # for the shafts without locker the same as the shafts with no mention of a locker at all?
The 33-spline options are for upgraded shafts. The stock spline is 30, but if you're thinking about doing a shaft upgrade to a 33-spline then you'll have to replace the factory lockers.

Normally the shafts are one part number and the shafts with locker is another part number.
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Old December 26th, 2007, 11:32 AM   #11
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the rubi d44 is 27 spline outers. if your gonna do alloy shafts think about 30 spline outers too. all you need is 30 spline stubs and 30 spline unit bearings. superior sells a kit, alloy might too. you could keep the old stubs and units as spares, but they need to be replaced together. good luck
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