groan in rear end

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#21

11-29-2010 | 07:03 PM

jason7504

Thread Starter

3rd Gear Member

Joined: Aug 2008

Posts: 957

From: Vancouver, WA

ok well here are some test results from the test drive:

*makes a grown/howl when turning wheel
*when coasting with foot off gas and in drive- the howling/whirling sound is still there
*when coasting in netural-still makes the howling/whirling sound
*when coasting under 30mph-sound is still there
*get's louder as speed increases

tomorrow i'm gonna swap wheels/tires and see if sound is still there to eliminate wheels/tires as a cause

#22

11-29-2010 | 07:41 PM

kyles_81camaro

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Joined: Nov 2010

Posts: 35

are you sure its not a u-joint in the drive shaft making the noise??

#23

11-29-2010 | 08:14 PM

1971BB427

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Quote:

Originally Posted by kyles_81camaro

are you sure its not a u-joint in the drive shaft making the noise??

Since the noise didn't go away when coasting in neutral, I'd bet it's not U joints. They usually make the most noise when under load. Speeding up and slowing down in gear.

#24

12-07-2010 | 03:20 PM

kyphur

3rd Gear Member

Joined: Oct 2007

Posts: 1,108

From: Huntsville, AL

Quote:

Originally Posted by jason7504

I can't remember if i had them balanced when i had the tires mounted but i wanna say that they weren't because the guy said that you don't need too with these good quality tires (mickey Thompson's). I know that Cragar's can vibrate since there hard to get centered with the uni-lug pattern too.

That's bad advice right there. The rims could be out of balance if they're poorly made. I don't think I've ever seen a setup that didn't need tire weights.