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Date:         Fri, 2 Oct 1998 10:19:33 -0700
Reply-To:     Dave Bayer <bayer@SYBASE.COM>
Sender:       Vanagon Mailing List <Vanagon@vanagon.com>
From:         Dave Bayer <bayer@SYBASE.COM>
Subject:      Re: [Fwd: head electrolysis cure?]
Comments: To: Vanagon@VANAGON.COM

>| Better than on the radiator would be to connect a magnesium or other
>| cathode-protection chunk electrically to the engine block somwhere
>| immersed
>| in coolant.  Unless what you're trying to protect is the radiator......


        Correct me if I am wrong here, but if the heads were suffering from
electrolysis, the ENTIRE surface that was exposed to the coolant would be
pitted or at least the inner ring around the rubber gasket would be pitted
and that pitting would extend in both directions evenly. This has not been
the case on my heads or any other heads that I have heard about. I think Tim
Smith's discussion on crevice corrosin fits the bill much better from both
a chemical reaction perspective and from an analysis of where the pitting
actually occurs... That discussion is in the archives.


dave
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