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Unread 04-25-2012, 07:24 PM   #1
Derby-xj-21
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driveshaft, sye, do I need them?

Have a 4 inch lifting xj, I'm adding 2" of lift soon. Wondering, do I need a longer front and rear driveshaft and or sye kit at 6" of lift?

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Unread 04-25-2012, 11:24 PM   #2
Ross00TJ
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Yes, your rear driveshaft angle will be ridiculous at 6" and it would be advisable to get a SYE and new DC shaft for the rear. Not sure if the front shaft needs to be lengthened or not nor the proper process for setting up XJs so I would do research on the subject before committing to anything. I believe it is the same setup as a TJ so you will also need Adjustable Rear Upper Control Arms in order to set the pinion angle.
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Unread 04-26-2012, 07:14 AM   #3
Derby-xj-21
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Thanks for the info, its the same setup in front as the tj, but has leafs in the rear. Do you know where I can find an sye, driveshaft setup?
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Unread 04-26-2012, 01:05 PM   #4
Ross00TJ
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You would have to look around the usual places like northridge4x4.com, or go to JB Conversions and get a SYE and then Tom Woods, Adams, or Tatton for a driveshaft. You could also go to your local driveline shops and get a SYE and custom built driveshaft through them. Me personally, I always try to do the local option.

I am not knowledgeable on how leaf spring suspensions set pinion angle, so you'll have to do your research for that.
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Unread 04-26-2012, 01:30 PM   #5
Derby-xj-21
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Ok, thank you. What would you recommend for a drive shaft?
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Unread 04-26-2012, 02:16 PM   #6
ajmorell
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Any of the places he mentioned will build you a quality piece. The only ones I would add are Carolina Driveline and Denny's Driveshaft
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Unread 04-26-2012, 03:10 PM   #7
Technohead
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For that matter any sizeable town should have a driveshaft specialist that can build a driveshaft equal to any of these mail order places.
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Unread 04-30-2012, 11:05 AM   #8
Derby-xj-21
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Thanks everyone, picked up driveshaft and sye already in a tc yesterday from a guy on here for $200.
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Unread 05-22-2012, 08:24 AM   #9
Derby-xj-21
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I have to get my driveshaft extended because it came out of a tj, which makes it shorter than an xj, just wondering how do I measure the length I need for my driveshaft? Do I have to have the lift in first because of the angle, or is there another way of doing it? I'm at 4" of lift now, but am going to be at 6" as soon as my brake lines come in.
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Unread 05-22-2012, 07:53 PM   #10
Ross00TJ
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Quote:
Originally Posted by Derby-xj-21 View Post
I have to get my driveshaft extended because it came out of a tj, which makes it shorter than an xj, just wondering how do I measure the length I need for my driveshaft? Do I have to have the lift in first because of the angle, or is there another way of doing it? I'm at 4" of lift now, but am going to be at 6" as soon as my brake lines come in.
You need to measure it with both the SYE and 6" of lift. You will need to have in the adjustable UCA's as well to adjust your pinion angle and ensure an accurate measurement.

IIRC, you will want to measure from the mounting face of the axle fixed yoke to the mounting face of the transfer case output fixed yoke.
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Unread 05-22-2012, 08:14 PM   #11
Derby-xj-21
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Ok thanks, that's what I figured, but wanted to be sure.
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