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Old January 9th, 2008, 10:52 PM   #1
scorpiansniper
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Default more yj to tj axle conversion questions

in my previous questions ive cleared up the the tj axle and drive shaft should mount right to and in the yj axle but i also heard that they use different u joint thus having a bigger stub shaft so would that mean i need a different hub too to fit the bigger stub shaft. im looking for peoples opinions that did this upgrade was there any problems ect. also was they a couple different kinds of yj shaft cause i was looking on ebay and some of them where made to the year of the vehicle which didnt cover all tj's so there might be more than one kind. And just to clear this up the tj driveshaft a direct fit too right.
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Old January 9th, 2008, 11:20 PM   #2
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Okay, I am going to try here. I am not sure completely wtf you are talking about, but I will try to make sense of your questions.


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Originally Posted by scorpiansniper View Post
in my previous questions ive cleared up the the tj axle and drive shaft should mount right to and in the yj axle but i also heard that they use different u joint thus having a bigger stub shaft so would that mean i need a different hub too to fit the bigger stub shaft.
It sounds like you are talking about the front axel shafts here. To get rid of the vac. axel shaft, you will need a new oil seal in the diff for the long side. The new shaft will fit right into place. TJ, and later XJ's use a stronger ujoint in the axel shaft. You do not have to change your hubs.

A TJ rear drive shaft will not fit a YJ, unless *I believe* you have the tcase out of the TJ. The tailshafts are different, and the rear drive shaft is a different length.

A TJ front will fit a YJ, but you will need to change the front output yoke on the tcase, if keeping the tcase from the YJ.

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im looking for peoples opinions that did this upgrade was there any problems ect. also was they a couple different kinds of yj shaft cause i was looking on ebay and some of them where made to the year of the vehicle which didnt cover all tj's so there might be more than one kind. And just to clear this up the tj driveshaft a direct fit too right.
A TJ axel shaft swap is an easy upgrade for YJ's to get rid of the 2-piece front axelshaft. As for the rest, the axels are different because of abs.
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Old January 10th, 2008, 09:28 AM   #3
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any idea on part number for the long side seal?

Thanks.
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Old January 10th, 2008, 11:52 AM   #4
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Not all TJ axle shafts have the 297 u joint. Some have the 260's. Unless you find the 297 (larger) u joint axle shafts, this would not really be an upgrade for a YJ. You'd get rid of the disconnect, but not gain much shaft strength with the same small u joint.
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Old January 10th, 2008, 12:51 PM   #5
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Quote:
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Not all TJ axle shafts have the 297 u joint. Some have the 260's. Unless you find the 297 (larger) u joint axle shafts, this would not really be an upgrade for a YJ. You'd get rid of the disconnect, but not gain much shaft strength with the same small u joint.
I've never seen a tj with the small u joints, can you enlighten me as to which ones had the small u joints so I can avoid?
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Old January 10th, 2008, 04:24 PM   #6
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that makes sense but are the stub shafts that come with the tj axles bigger cause if they are they wouldnt fit would they
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Old January 10th, 2008, 08:15 PM   #7
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Quote:
Originally Posted by scorpiansniper View Post
that makes sense but are the stub shafts that come with the tj axles bigger cause if they are they wouldnt fit would they
no
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