'88 90Q Center support bearing - %$(@%@_*!!!!

[Dr. Ian McArthur]

We have four 5TQs and have just done a driveshaft centre bearing.  It cost
about $250 Canadian (that's 12 dollars US :<)

The centre bearing and rubber support were replaced with a BMW piece.  The
driveshaft does come apart and the replacement bearing works just fine.

I do not know the details of how it was done as we farmed it out to a firm
in Edmonton, Alberta.

The replacement centre bearing did not have the correct steel mounting
bracket so the repair entailed welding the bottom part of the original Audi
bracket on to the BMW piece.  It fit perfectly and has no vibration.

We manufactured a jig from a commercial steel 2X4 building stud (from a home
supply depot) to align the driveshaft.  I think this is critical.

The new rubber bush in this BMW bearing seems far more substantial than the
original Audi piece but we are not sure about this.  When comparing the
rigidity of the new bushing to the other (well used) original drives shafts
the new one is far more rigid.  This could be because the originals all have
around 250-400 kilometers on them.

Hope this helps.

Ian

-----Original Message-----
From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
Behalf Of randy paquette
Sent: Saturday, March 08, 2003 1:50 PM
To: quattro at audifans.com
Subject: '88 90Q Center support bearing - %$(@%@_*!!!!


Well fellow listers,
As some of you may remember I purchased a 90Q to fix up for my nephew as a
high school graduation present.  I keep hitting more things that really need
to be addressed and am ready to give up and part this thing out.  I still

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