Vibration after rearend install - LS1TECH



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Vibration after rearend install

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Old 04-22-2012, 09:14 PM   #1
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Default Vibration after rearend install

I bought a used s60 last fall and have had a horrible vibration ever since. I have changed driveshafts, changed axles, changed ring and pinion, balanced the tires, adjusted my pinion and and control arms, aligned it. Everything I can possibly think of and still get a vibration. Is there anything else I can try to solve my problem?

Thanks, mike
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Old 04-23-2012, 02:32 PM   #2
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Mike have you pulled the axles to take to a local machine shop to check runout? I would have them put them on the lathe and put a dial indicator on it to make sure you don't have a bent axle.
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Old 04-23-2012, 07:14 PM   #3
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Brand new axles man. I've tried it all
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Old 04-24-2012, 07:33 PM   #4
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are you 100% sure you have the right length driveshaft?
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Old 04-24-2012, 07:40 PM   #5
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Balanced the driveshaft?

Have you put the rear in the air and ran it?
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Old 04-24-2012, 07:52 PM   #6
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Yes and yes. I was told the torque converter could do it too. It does it the worst above 60 in overdrive but in 3rd it isn't bad until about 80mph
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Old 04-24-2012, 08:32 PM   #7
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I know you said you replaced the driveshaft, but did you check the u-joints or replace them? U-joints usually vibrate more at cruise speed or upon deceleration.
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Old 04-24-2012, 08:58 PM   #8
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Yep. Checked them in both driveshafts. The are good.
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Old 04-24-2012, 09:04 PM   #9
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Run it on jack stands and make sure the wheel are spinning true.
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Old 04-24-2012, 09:25 PM   #10
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Already tried that too lol
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Old 04-24-2012, 09:39 PM   #11
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Have you checked your pinion angle?
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Old 04-24-2012, 10:35 PM   #12
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Yep tried that too
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Old 04-24-2012, 11:28 PM   #13
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Check the output shaft on the tranny?
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Old 04-24-2012, 11:30 PM   #14
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Ill try that soon as I get off work tomorrow
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Old 04-24-2012, 11:59 PM   #15
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does it vibrate above 60 with the converter locked? because you could prob rule that out then. also did you blow your last rear and lasts why you got the dana?
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Old 04-25-2012, 12:02 AM   #16
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Yes it does vibrate with the verter locked. The rear never broke, tried to avoid that lol. I got the 60 because it wad used and a good deal.
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Old 04-25-2012, 08:39 AM   #17
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did you change the trans mount at all when you did this? Usually the Poly mounts are different heigh then the factory one and will cause one hell of a vibration.
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Old 04-25-2012, 08:52 AM   #18
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Put a new factory style rubber mount in it
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Old 04-25-2012, 09:51 AM   #19
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List your entire drivetrain and chassis setup.
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Old 04-25-2012, 10:07 AM   #20
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Quote:
Originally Posted by 94dragbird View Post
Put a new factory style rubber mount in it
New mount before or after the installation of the rear?
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37, 411, 98, bushing, end, gears, install, locker, make, mess, rear, rearend, shimmy, swap, tailshaft, trans, vibration

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