AA SYE and TW DS Questions... still vibes

Purple · Mar 14, 2005

98XJ with teraflex 4" lift.... due to lots of vibes i went with AA SYE and TW DS... installed everything in a snap, but still getting vibes... when driving on the highway around 100-120km/h it does vibrate a little, ...its not much... but its noticable and you know its there... it only happens when i press the gas pedal and keep on driving, once i let go off the pedal it stops....
my concern is that if that still vibrates:
1. it will wear the ujoints
2. pissess me off cause i went with that kit to eliminate vibes.
what do you think my next step should be?

johnnyc · Mar 14, 2005

How's your pinion angle? Did you add axle shims?

Purple · Mar 14, 2005

no, no shims were added, what degree do you think should i use?

RCP Phx · Mar 14, 2005

Purple said:
no, no shims were added, what degree do you think should i use?

You need to measure for yourself!All axle/spring/shackle combos are different!

jdougn · Mar 14, 2005

I run the same jeep, a 98xj. My vibes were in the same speed range, 50-60 mph. The bushing on the upper & lower control arms were shot along with the bushings in the front shocks. :repair:

Also check to make sure your tires are balanced correctly since that is the same speed unbalanced tires show up. HTH

Purple · Mar 14, 2005

my jeep was lifted about 3 months ago, and that meant replacing all of the stuff that you just mentioned except the UCAs. Where to buy shims? what kind to get? heard that some are metal and some aluminum, which ones are better? anyone know of a site where shimming is explained?

RCP Phx · Mar 14, 2005

Use steel shims!
http://www.4xshaft.com/driveline101.html

doodahman · Mar 14, 2005

With a CV type driveshaft, the angle between the pinion and driveshaft should be close to 0 deg if not a little off to allow for spring wrap on accelleration. I'm not sure exactly what the allowable tolerances are though.

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90 2dr 6" RC4.5 + Tera LA + 1.5" blocks, 33" MTR, Currie Steering, Tom Woods SYE & Shaft, Flowmaster, Posilock

Purple · Mar 14, 2005

Thank you all

))

XJ_ranger · Mar 14, 2005

RCP Phx said:
You need to measure for yourself!All axle/spring/shackle combos are different!

agree

RCP Phx said:
Use steel shims!
http://www.4xshaft.com/driveline101.html

agree...

CW · Mar 14, 2005

Purple said:
what kind to get? heard that some are metal and some aluminum

Kittrell · Mar 14, 2005

Purple said:
.........heard that some are metal and some aluminum.....

"Non-Metal Aluminum shims, from the same people that brought you Billet Lift"

AA SYE and TW DS Questions... still vibes

Purple

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johnnyc

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Purple

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RCP Phx

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jdougn

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Purple

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RCP Phx

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doodahman

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Purple

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XJ_ranger

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CW

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Kittrell

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