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Old 06-12-2013, 04:36 PM   #1
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SYE/ CV Driveshaft Install question

Im new to the Jeep world.
I have an 06 Wrangler, 4.0, auto, 4.56 gears, and 4in lift.
When I purchased the jeep it already had the lift.
I plan on installing a SYE and CV Drive shaft so I can get rid of that driveline vibration between 42-48mph.
I noticed that the Transfer Case Skid plate has a two inch spacer installed.
Do I need to remove this spacer before installing the sye and driveshaft? Or do I leave as is. I also dont know if changes were made with the motor mounts.
Any helpful information would be greatly appreciated.
Thanks

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Old 06-12-2013, 04:45 PM   #2
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I would say you should take the 2" transfer case drops off. They typically install the drops to improve the driveline angle and eliminate vibration. Since you don't know the history of what's been done to the jeep, it will kind of be hit and miss. I would take the TC drop off and that "should" put the engine, transmission and transfer case back into the stock location assuming an engine mount lift has not been done. Then install the SYE and CV shaft. You will have to have adjustable rear upper control arms to adjust the pinion angle once the CV shaft is installed. You should be able to adjust it correctly and get rid of the vibration and gain 2" of transfer case clearance....

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Old 06-12-2013, 04:57 PM   #3
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If you go to this web page Tom Wood's Custom Drive Shafts - SYE it will tell you how to measure what you have now. Then call Tom Wood's Drive Shafts (one of the sponsoring vendors on the forum) and tell them what your current set up is and that you plan on getting rid of the t-case drop, they can do the math and custom make a drive shaft that will fit your application. Mine came out perfect. Don't forget, when they installed the t-case drop, they would have also installed a drop bracket on the t-case shift linkage, (unless they installed a cable shifter) which will also have to be removed.

A motor mount lift could remain.
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Old 06-12-2013, 05:26 PM   #4
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Thanks for the great information.
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Old 06-12-2013, 10:56 PM   #5
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Quick pic of what is installed now.

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Old 06-13-2013, 12:15 AM   #6
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That's the stock drive shaft. It could be the picture angle, but to me, it looks like the pinion angle has been adjusted up (possibly to try and get rid of vibes). Problem is, with a stock shaft, the transfer case angle and the pinion angle should be the same. Parallel.

I installed the mega short SYE from Advance Adapters and a Tom Wood's ds a few months ago on my 4" sus lift, and what a difference...!

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