Date:         Wed, 2 Feb 2011 22:32:36 -0500
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      S/S coolant pipes - a different vulnerability?
Comments: cc: Alistair Bell <albell@shaw.ca>
Content-Type: text/plain; charset="us-ascii"; format=flowed

Dear Volks,

Now that overall galvanic corrosion has been laid to rest, take a
look at this for a couple of scary photos
http://picasaweb.google.com/dbeierl/PittingCorrosionInStainlessSteel#5478091019245298018
.  Not sure how long it took on that trowel, but I've seen it go
through a good-quality saucepan in a few days.  Quite a surprise when
the water started squirting out the side.  Thickness was similar to
the trowel, maybe a bit less.  Could this be an issue for the Vanagon
underbody coolant pipes?  It certainly can be in marine applications.

Here's a place to start continuing to be scared, especially if you
live where they salt the roads.
http://en.wikipedia.org/wiki/Pitting_corrosion .  Thinking of it
tonight because Providence is apparently pretty much shut down from
ice, haven't heard a car go by in about five hours now.  Heard one
siren in that time.  Reckon they'll be salting tonight some time,
after they get chains on the trucks maybe?

Yours,
David
ps - Alistair, maybe this will take your mind off those bleeding
bleed nipples for a little while...

--
David Beierl -- dbeierl@attglobal.net