Vibration damper on diff housing
Thread Starter
Safety Car
Joined: Aug 2011
Posts: 4,439
Likes: 405
From: Portland OR
Vibration damper on diff housing
Hi all,
My 2000 A4 coupe has a vibration damper bolted to the diff. A small dumbell looking thing with a rubber center support.
Was this used on all cars? Or maybe just the A4?
I am adding Poly engine mounts as well as a poly diff mount and wondering if the damper is still needed. I can try it on or off, but just wondering if anyone has any experience with this.
Ron
My 2000 A4 coupe has a vibration damper bolted to the diff. A small dumbell looking thing with a rubber center support.
Was this used on all cars? Or maybe just the A4?
I am adding Poly engine mounts as well as a poly diff mount and wondering if the damper is still needed. I can try it on or off, but just wondering if anyone has any experience with this.
Ron
Thread Starter
Safety Car
Joined: Aug 2011
Posts: 4,439
Likes: 405
From: Portland OR
I have the Hinson mounts. The diff mount arrives today, I'll see if there are any destructions. I mean instructions. 
Either way is fine, but the car is all apart now and I'm not sure how hard this is to remove when all assembled.
It weighs a few pounds, which when removed is an ET improvement of .0001 seconds in the 1/4 mile. ha!
Ron
Either way is fine, but the car is all apart now and I'm not sure how hard this is to remove when all assembled.
It weighs a few pounds, which when removed is an ET improvement of .0001 seconds in the 1/4 mile. ha!
Ron
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Hi all,
My 2000 A4 coupe has a vibration damper bolted to the diff. A small dumbell looking thing with a rubber center support.
Was this used on all cars? Or maybe just the A4?
I am adding Poly engine mounts as well as a poly diff mount and wondering if the damper is still needed. I can try it on or off, but just wondering if anyone has any experience with this.
Ron
My 2000 A4 coupe has a vibration damper bolted to the diff. A small dumbell looking thing with a rubber center support.
Was this used on all cars? Or maybe just the A4?
I am adding Poly engine mounts as well as a poly diff mount and wondering if the damper is still needed. I can try it on or off, but just wondering if anyone has any experience with this.
Ron
Thread Starter
Safety Car
Joined: Aug 2011
Posts: 4,439
Likes: 405
From: Portland OR
Well, I am also changing to the later 2002 torque tube with the bigger driveshaft. That will change the harmonic frequency.
Obviously a fix for NVH, but with different mounts etc, who knows.
I will just put it on.
Thanks Bob, I figured that was what it is for.
Ron
Obviously a fix for NVH, but with different mounts etc, who knows.
I will just put it on.
Thanks Bob, I figured that was what it is for.
Ron
Tech Contributor
Joined: Jan 2007
Posts: 19,353
Likes: 1,125
From: Dyer, IN
Thread Starter
Safety Car
Joined: Aug 2011
Posts: 4,439
Likes: 405
From: Portland OR
You are correct! I will be drag racing and maybe autocrossing the car. As well as DD when it isn't raining.
At the same time, I will not be throwing away the stock parts either!
This is my first Corvette.
Ron
At the same time, I will not be throwing away the stock parts either!
This is my first Corvette.
Ron
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From: Port Saint Lucie FLORIDA & HONDURAS
Safety Car
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We do recommend removing that balancer when installing our C5 Diff Mount. The balancer was tuned for a specific frequency, and as mentioned above if you're changing that system enough through the use of Poly it's likely not going to make a difference in NVH.
If you're working with a stock car there is no reason to pull it out. If you're modifying parts anyway there isn't a reason for it.
