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Gearing

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Old 11-01-2010, 04:25 AM
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Great right up!

Old 11-05-2010, 04:08 PM
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Default Gear install help!

Worked on installing Yukon gears today.

Yukon says ring gear bolts are 55 ft lbs for both the D30 and D44, this is lower than I have read elsewhere.

On the D30, I got up to about 60 ft lbs on the bolts included on my Yukon overhall kit and had to stop because if flet like they would strip. These are fine threaded bolts and are 5/16 or 3/8.

Can anyone help me out?

What is correct for the D30

What should I do on the D44? 55 seems low in the rear.
Old 11-13-2010, 09:17 AM
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Now that's something which you don't learn everyday. I was trying to read rehearing info piece by piece and it's great to see them all here. Great writeup
Old 11-17-2010, 08:38 PM
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Default 07 auto font dana 30 to 5.13's

i have an 2007 auto with dana 30 front end and am looking to regear to 5.13. will new 5.13 ring and pinion fit on the stock front end center/carrier? cheers.
Old 11-18-2010, 03:29 AM
  #65  
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Originally Posted by jordan
i have an 2007 auto with dana 30 front end and am looking to regear to 5.13. will new 5.13 ring and pinion fit on the stock front end center/carrier? cheers.
Do you have 3.21 gearing right now ?

In other words... do you have tow package on your X ?

And btw.... welcome to the JK-Forum ! !

Last edited by MasterG; 11-18-2010 at 03:34 AM.
Old 11-23-2010, 04:43 AM
  #66  
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Originally Posted by MasterG
Do you have 3.21 gearing right now ?

In other words... do you have tow package on your X ?

And btw.... welcome to the JK-Forum ! !
cheers. i don't have a tow package but i think the tow package manuals and the autos both have 4.11's so so would like to change from 4.11's ( ithink) to 5.13's.
cheers
Old 11-23-2010, 04:48 AM
  #67  
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Originally Posted by jordan
cheers. i don't have a tow package but i think the tow package manuals and the autos both have 4.11's so so would like to change from 4.11's ( ithink) to 5.13's.
cheers
Nope. 4.11 only in Rubicon and if you have a Dana 30 up front, you do not have a Rubicon so you have a 3.21 if you don't have a tow package and 3.43 if you got the package. The carrier of the 3.21 gearing are too small to put 5.13 in it so you will have to change it, you may also need a overhaul kit..

if you have a tow package and the 3.43, your carrier should be large enough to upgrade to 5.13 without changing it.

Old 11-23-2010, 06:51 PM
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Originally Posted by MasterG
Nope. 4.11 only in Rubicon and if you have a Dana 30 up front, you do not have a Rubicon so you have a 3.21 if you don't have a tow package and 3.43 if you got the package. The carrier of the 3.21 gearing are too small to put 5.13 in it so you will have to change it, you may also need a overhaul kit..

if you have a tow package and the 3.43, your carrier should be large enough to upgrade to 5.13 without changing it.

just started working on my diffs and they areb 4.1 ratio as it is an auto, the manuals and autos have differnt raqtios i guess. cheers for the input but i wouldn't say anything in the future unless your 100%.
Old 11-23-2010, 08:06 PM
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Originally Posted by jordan
just started working on my diffs and they areb 4.1 ratio as it is an auto, the manuals and autos have differnt raqtios i guess. cheers for the input but i wouldn't say anything in the future unless your 100%.


...So you have a non-Rubicon with dana 30 up front and 4.1 ratio stock from the dealer ?

Last edited by MasterG; 11-23-2010 at 08:08 PM.
Old 11-24-2010, 10:22 AM
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Originally Posted by mcc454
07 non-rubi Auto JK's came with 4.10 gears with/without tow package. They did not switch them to 3.73 until 08. And even some of the earlier 08's had 4.10 gears in them.

I am assuming your carrier will be fine, the only ones I think you have to get a new carrier for are the 3.21's like I have and those only come in manual transmission Jeeps.
Nice to know..


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