What u-joints come on the TJ?


LakeBeard

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Is this stock? 2004 Rubicon

PXL_20210209_010129100.jpg
 

COYOTE83

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@Jerry Bransford

I’ve read through this thread and a couple others trying to determine for myself which u joints I need, but a few variables are making it a little confusing so I figured I would ask you and get a definite answer to eliminate any mistakes.
my Jeep is a 2001 sport but I have rubicon d44s front and rear, SYE and CV driveshaft. I’d like to get the upgraded stronger u joints, wherever possible. When you have time could you please let me know the part numbers and quantity I need. If you need any pictures of the cv shaft or anything just let me know.

I’ll be doing chromo axle shafts soon and want to go ahead and replace/upgrade to stronger u joints on the axles and driveshafts at the same time.
 
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Jerry Bransford

Jerry Bransford

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@Jerry Bransford

I’ve read through this thread and a couple others trying to determine for myself which u joints I need, but a few variables are making it a little confusing so I figured I would ask you and get a definite answer to eliminate any mistakes.
my Jeep is a 2001 sport but I have rubicon d44s front and rear, SYE and CV driveshaft. I’d like to get the upgraded stronger u joints, wherever possible. When you have time could you please let me know the part numbers and quantity I need. If you need any pictures of the cv shaft or anything just let me know.

I’ll be doing chromo axle shafts soon and want to go ahead and replace/upgrade to stronger u joints on the axles and driveshafts at the same time.
The u-joints vary by Rubicon axle model year, 2003-4 or 2005-6. Do you know what model year Rubicon your axles came out of?
 

COYOTE83

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@Jerry Bransford

I’ve read that, and I’m not 100% certain which year they came from. What are some indicators or a cast number or something I can look for to differentiate.
i appreciate it man.
 
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Jerry Bransford

Jerry Bransford

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You're going to have to use something very accurate to measure the pinion shaft u-joint yokes on both axles to determine their sizes.


The dimensions of the possible u-joints can be looked up based on the models shown above in the chart. But you also have to know what size yokes are on your driveshafts. You can also choose to install the size yokes you want on the axles to match your driveshaft yokes, 1310 or 1330. 1310 is usually plenty, 1330 can be used for more demanding uses.
 

COYOTE83

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10-4. Thank you sir. I have a scale, I’ll try to get some measurements tomorrow and get back with you.
I’d rather go with the 1330. I don’t think it would be “necessary “ in my application, but I want to build it to be able to handle some demanding situations, in hopes of eventually taking it out west somewhere.
 
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COYOTE83

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@Jerry Bransford
I have been slammed lately and haven’t had time to measure the u joints yet. I was thinking though, I’m planning to upgrade to RGA chromoly shafts front and rear so I don’t THINK the axle u joint size would be an issue then since the fronts come with new u joints.
Since the issue is different size u joints for different year model rubicon axles, 03-04 and 05-06, Do I still need to measure the driveshaft u joints or can I just go with the 1330 without issue? To recap the rear has a CV shaft, not sure of manufacturer.
thank you sir.
 
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Jerry Bransford

Jerry Bransford

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@Jerry Bransford
I have been slammed lately and haven’t had time to measure the u joints yet. I was thinking though, I’m planning to upgrade to RGA chromoly shafts front and rear so I don’t THINK the axle u joint size would be an issue then since the fronts come with new u joints.
Since the issue is different size u joints for different year model rubicon axles, 03-04 and 05-06, Do I still need to measure the driveshaft u joints or can I just go with the 1330 without issue? To recap the rear has a CV shaft, not sure of manufacturer.
thank you sir.
You have to know what size u-joints the driveshaft is set up for. Factory size is 1310 but you have an aftermarket CV shaft which is probably 1310 but it could be 1330 too.