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Whirring Noise - And the winner is!


ADAM BIRNBAUM
 

Okay everyone,

I posted on sunday that my '88 S4 A/T had picked up a whirring noise. I'm
going to get it verified with the local porsche shop tomorrow, but I think
Geoff Taylor may be a winner. Of his many suggestions, he stated torque
tube bearings. I just got done running the car with the front end in the
air. Crawled underneath, and I swear the noise is coming from the torque
tube. There is definitely a weird resonance thing going on under there. At
first it sounded like it was coming from the bell housing, then the
transaxle, then above the cats. I'd heard that drive train noises could be
elusive, but man this is flat out weird.

So, my local brethren, I'm all ears on torque tube replacement cost
estimates. I would really like to take this on myself (really), but am not
sure if I'm quite up to the task.

I'll post tomorrow after I get the news from the experts.

-Adam Birnbaum


 

Adam: If the torque tube is the problem( the bearings inside) you should feel
the vibration in the shifter or some type of vibration from the bearings
going out.
Calvin 90S4


 

Calvin,

My torque tube went out and there was no vibration in my gear select boot.
Just a loud humm under the car

Rob Fossett


 

Adam,

If you remember, my tube went out last summer. I tried to do it myself but
found it very difficult without a lift. The problem is that the rear end must
come out, and to do this you need to support the car in the air, with the
axle free to role away. I could not find a secure way to this without
worrying about the car falling off the stands. For me it was worth paying the
$900.00 or so to have it done. If you decide this is a better option, Denny
Akers at Akers Foreign Auto in Seattle, does great work. I highly recommend
him. They did mine in a day. They also replaced the front and rear bearings
and serviced the trany at the same time, which I also recommend.

Rob Fossett


 

Adam,

Yes, it included parts. I dont remember the exact amount but I will check my
receipt and let you know.

Rob


ADAM BIRNBAUM
 

Hey Rob,

I do remember your fried torque tube. Mine is more of a whirring sound
compared to the "ball bearings in a blender" sound that I remembered your
shark making. So does the $900 include parts?

-Adam

----- Original Message -----
From: <huntnphool@...>
To: <PacNW928@...>
Sent: Thursday, June 08, 2000 7:21 PM
Subject: Re: [PacNW928] Whirring Noise - And the winner is!


Adam,

If you remember, my tube went out last summer. I tried to do it myself but
found it very difficult without a lift. The problem is that the rear end
must
come out, and to do this you need to support the car in the air, with the
axle free to role away. I could not find a secure way to this without
worrying about the car falling off the stands. For me it was worth paying
the
$900.00 or so to have it done. If you decide this is a better option,
Denny
Akers at Akers Foreign Auto in Seattle, does great work. I highly
recommend
him. They did mine in a day. They also replaced the front and rear
bearings
and serviced the trany at the same time, which I also recommend.

Rob Fossett

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Adam Birnbaum
 

Thanks for the input Calvin,

I don't think the tube has degraded that far. (Yet!)
Ray Wach on Rennlist said he had a similar problem, and got rid of it by
releasing the stress built up inbetween the tube and the engine. (Loosen
collar, re-torque).
The shop said it was the torque tube, but wouldn't install an aftermarket
rebuild so I'm checking other options.

-Adam

----------
From: mmayn43508@...
To: PacNW928@...
Subject: Re: [PacNW928] Whirring Noise - And the winner is!
Date: Wednesday, June 07, 2000 9:28 PM

Adam: If the torque tube is the problem( the bearings inside) you should
feel
the vibration in the shifter or some type of vibration from the bearings
going out.
Calvin 90S4

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