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Old 06-11-2013, 06:19 PM   #1
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New TJ owner needing advice/help

Alright guys needing some advice/help... I just recently traded for my 01 TJ 4.0 Auto, when i got it off the guy he told me it had a 4" Rough Country suspension lift now im not really for sure if it really is or not so was hoping if anybody could tell from the pics if it is or anyway i could measure or something to see how big of a lift it is.. Secondly the issue im having is some vibration at acceleration at any speed from pulling out to 60-70 on the highway but it goes away when i let off the gas, now i have done some research and read that with a lift that high it pretty much puts the rear driveshaft out of angle and thats where my vibration could be coming from.. now i have read of some solutions to this which is pretty pricey specifically the SYE Kit with a CV driveshaft, ive also read of people lowering the transfer case putting spacers in between the skid plate and the frame to lessen the angle on the driveshaft which i think might be done to mine but not sure because im not sure how its supposed to look stock i added some pics. if somebody can tell me if mine has spacers or if thats stock also added a picture of the driveshaft and angle, the angle doesnt look real bad to me but yet again not sure how much angle it supposed to have and if mine is fine or not.. I love my jeep and would love to keep the height and tires that are on it i do plan on doing some trail riding so i would love to have some advice/help in figuring out where my vibration is coming from and if my driveshaft is alright or not last thing i need is tearing up stuff because its not done properly.. Thanks again guys and looking forward to getting this figured out..
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Old 06-11-2013, 06:27 PM   #2
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You already have a tcase drop. Appears to be a 4" lift. To correct vibes you need a SYE, DC shaft, angled track bar bracket, and at least rear upper adjustable control arms.

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Old 06-11-2013, 07:19 PM   #3
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ok thanks.. seeing that im on a budget would getting the rear upper adj. control arms in conjuction with the t-case drop help with not damaging anything until i can get the funds to get the sye kit and driveshaft?
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Old 06-11-2013, 07:33 PM   #4
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Quote:
Originally Posted by Shortstuff View Post
ok thanks.. seeing that im on a budget would getting the rear upper adj. control arms in conjuction with the t-case drop help with not damaging anything until i can get the funds to get the sye kit and driveshaft?
First thing I would do is pull the rear shaft and take a ride in 4hi . A 1" MML will help with the Angles
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Old 06-16-2013, 11:31 PM   #5
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Alright guys I'm looking to just buying the sye kit with a cv driveshaft now since I have a tcase drop do I need to remove those..
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Old 06-17-2013, 02:53 AM   #6
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You don't need to but a SYE will take away the need for them. A SYE is only half useful unless you get rear upper adjustable control arms as well. I had to have a 1" TC drop with my SYE/DC shaft with a 3.5" lift until I got Some savvy control arms. Now TC drop gone and no vibrations.

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