1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Help rear end knocks when shifting / boosting

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Old Jan 3, 2009 | 03:15 PM
  #1  
twigg's Avatar
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Its an addiction.
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From: Central Florida
Exclamation Help rear end knocks when shifting / boosting

When I shift medium or shift on boosting rearend knocks " thud " hard.. I heard u can weld it... I don't know what to do. Thanks for help. Just bought the Rex
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Old Jan 3, 2009 | 11:42 PM
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3rd and final 7's Avatar
wheres the water goin?
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i have a knock on mine and it ends being part of the tri link one of my rods of my tri link bushings are bad , so try getting under your car and start trying to move the rods front and back and left to right.
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Old Jan 4, 2009 | 12:40 PM
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DivinDriver's Avatar
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From: Chino Hills, CA
First step; check the gear oil level in the rear end; make sure you've got enough lube of the proper type in there.

Check your driveshaft u-joints, too.
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Old Jan 5, 2009 | 12:26 AM
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From: Durango Colorado
Bad link bushings are easy to see that theres a problem, just man handle them and see if they move. I bet thats the issue. If not also lift car and wiggle the tire to see if there is any play at the wheel.
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Old Jan 5, 2009 | 06:11 PM
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From: Alberta, Canada
His sig says he has an 87, if thats the case, try the second gen section
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Old Jan 6, 2009 | 10:33 AM
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From: St Joe MO
If it's a 2nd gen, the rear diff mount is broken, very common on the TIIs. Friend of mine broke 2 until he had a metal one custom made.
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