AC-compressor differences

[Peter Golledge]

If the compressor is still good, I would replace the o-rings between the
manifold and compressor body.  Pull a vacuum and see if it holds.  If it
holds charge it up and away you go.  I did this ~7 years ago on an 89 200TQ
(along with a conversion to R134A) and it is still running fine today.  Much
cheaper than a new compressor and not much time to verify if this was the
leak.  You can also add Dye prior to taking things apart, run the compressor
and you _may_ be able to spot the leak with UV light.  Again a pretty cheap
option which has saved me ever having to take an Audi to an AC shop. :-)

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of Dag Bøsterud
Sent: Sunday, May 23, 2010 9:41 AM
To: quattro at audifans.com
Subject: AC-compressor differences

I have a 1990 Audi 100 TQ Sport Exkl. with the 10P17C AC-compressor. The
compressor has the two-piece design manifold.

I'm thinking of buying a new (rebuilt) compressor, and some shops offer the
compressor without the manifold, whereas
some shops offer the compressor with the one-piece design manifold as found
on the Audi 100 with four cylinder engine and
Audi 90 etc etc.

I've also read that the two-piece design manifold is a bad design, prone to
leakage. Currently I know that mine is leaking between
compressor and manifold, but there was no way of telling if there was a
leakage in the manifold itself.

Will a one-piece design manifold fit my car? If not, what will have to be
modified?

/Dag

1990 Audi 100 Turbo Quattro Sport Exklusiv

143 000 miles
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