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Old 08-15-2011, 10:08 PM   #1
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Question TJ Front Driveshaft

Stupid chick here so spare me any wise cracks.

Have an 02 TJ that needs a new/used front driveshaft. Some say there is a difference between a DS for an automatic vs. manual transmission and some say they are the same.

And the verdict is??? Thanks!

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Old 08-16-2011, 12:25 AM   #2
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My best answer is that it shouldn't matter since they actually connect to the transfer case. You could always double check the length, but that would be the only possible difference unless it's a rubicon. I believe they use a different, slightly more heavy duty connection. I'm sure somebody will correct me if I'm wrong.

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Old 08-16-2011, 12:57 AM   #3
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there is a difference in length and diameter. Check out the pic. The skinner one is from a 98 sport with an auto tranny the other one is from a 97 sport with a 5 speed.
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Old 08-16-2011, 03:16 AM   #4
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As I suspected. Nothing brings a good answer faster than a bad answer.

I can understand why they might be different lengths, but no reason why they would be different diameter. Oh well.
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Old 08-16-2011, 05:51 AM   #5
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Is your present shaft so bad that it can not be rebuilt?
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Old 08-16-2011, 07:34 AM   #6
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They are different diameters because the automatic tranny is wider and the larger driveshaft would interfere with the side of the tranny.
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Old 08-16-2011, 08:10 AM   #7
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Quote:
Originally Posted by solman View Post
They are different diameters because the automatic tranny is wider and the larger driveshaft would interfere with the side of the tranny.
correct. the wider diameter tube will rub the automatic transmission pan.

there is likely no difference in strength between the two...the larger tube is generally a thinner wall than the smaller diameter tube.
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Old 08-16-2011, 01:15 PM   #8
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Thanks to all for replies. I had ordered a used DS (my local rebuilder wanted a small fortune to straighten mine) for my automatic tranny. When it arrived, the paperwork indicated it was for a manual tranny but it was too short. Found a reasonably priced new one on Quadratec’s web site but the description did not indicate if it was for an automatic or manual so I entered into a chat conversation with them and was told there is no difference. I find that hard to believe.
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Old 08-16-2011, 01:53 PM   #9
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Depending on price I've found that the stock front DS is cheaper thru the Jeep dealer.
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Old 08-16-2011, 02:04 PM   #10
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Groovy, I'll check with my local dealer.
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Old 08-17-2011, 02:49 PM   #11
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And the verdict is...

For 2002 and older TJs, the automatic transmission is much wider so the front driveshaft is made with a smaller diameter to clear the transmission. You can use a the smaller diameter automatic transmission style front driveshaft if you have a manual transmission, but you cannot use a manual transmission style larger diameter front driveshaft if you have an automatic transmission.
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Old 08-17-2011, 05:54 PM   #12
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Thanks for posting what you found out!
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Old 08-17-2011, 06:32 PM   #13
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I cannot tell a lie - I found the answer to my original question in another wranglerforum.com post.

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