Re. water pump mounting plate pitted

[Ben Swann]

Ed,

JB weld or a high temp metal epoxy (even better) will be fine.  I like the high temp
metal epoxy putty better because it is easier to work with.  Be sure to use air die
grinder tool with mild abasive disk, followed with fine disk to smooth both before
application of expoxy and then after.  Use Iso. Alcohol to clean metal before epoxy
application.

I would also use permatex aviation/marine gasket sealer, aka "black gooey stuff" to
ensure good seal.  This stuff give ample working time, but eventually will increase
difficulty of adjustment, but never really hardens.  I use this on most gaskets that are
exposed to oil or water.

Cheers!

Ben

[Date: Tue, 29 Sep 2009 20:53:54 -0600
From: "Ed Kellock" <ed.kellock at msn.com>
Subject: water pump mounting plate pitted
To: <quattro at audifans.com>
Message-ID: <BLU0-SMTP19691BD236911A4BCD74CD83D40 at phx.gbl>
Content-Type: text/plain;	charset="us-ascii"

I'm doing the timing belt, etc. on the Coupe GT.  The area where the water pump o-ring
seals is slightly pitted.  I smoothed it down and cleaned it up with a sanding block and
I still have a couple of spots where there is some light pitting.  I was thinking about
using some high-temp JB Weld to smooth it out.  Is there something else that would be
better?  Is there some water pump oriented stuff that would be more appropriate?  I
didn't think I should use any sort of gasket sealer because the water pump has to move
to tension the belt.  I didn't think I could rely on the o-ring to seal reliably over
time even though the pitting is really very minor.
 
Thanks in advance for input and/or suggestions.
 
Ed]