Drive shaft vibration - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

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post #1 of (permalink) Old 08-02-2003, 06:09 PM
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Drive shaft vibration

I installed a 3" Teraflex suspension system today on my 02 TJ. I did the control arm, transfer case drop and adjustable front track bar. Looks good and will have 4 wheel alignment on Tuesday. I have rear drive shaft vibration on acceleration at any speed. I know some is to be exspected. I have extended the rear control arms from the stock 15 3/4" to 16 3/8". I am going to try another turn or two Sunday. Does anyone have any experience in this? I plan on getting a slip yoke eleminator but in the mean time is there a chance of minimizing the vibration? Any info would be appreciated.
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post #2 of (permalink) Old 08-02-2003, 08:38 PM
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Re: Drive shaft vibration

If both U joints are not at the same angle, The driveshaft is out of phase, Thus causes a vibration. When you go with the SYE and install a Double cardian (spelling?) joint driveshaft, The rear Ujoint and driveshaft is to be installed with the pinion ever so slightly downword so that the driveshaft will be in a strait line with the pinion. The 2 Ujoints at the top will then cancel out each other's angle so that no vibration is present.

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