Simply put, it's a normal process between disimilar metals. The actual
process, and why it happens at anyone point gets more complictaed. It's
the same reason that pleasure boats that are in salt water have Zink
blocks attached near the out drive so that this process is attracted to
the replaceable block and not the expensive out drive components.
A Chemist could give a more precise explanaition of this.
Rich
>----------
>From: Chris.Stephenson(at)turner.com[SMTP:Chris.Stephenson(at)turner.com]
>Sent: Wednesday, April 03, 1996 4:54 AM
>To: alpines-request(at)autox.team.net
>Subject: Electrolysis
>
> Ok, here is the next question.
>
> I had my cylinder head refurbished four years ago. Last October
>one of
> the valve seats gave way. When I took it off the car. there was
> evidence of severe corrosion and the guy at the local head shop
>told
> me it appears to be electrolysis. Does anyone know what causes
>this?
>
> Chris Stephenson
> Alpine III
> Atlanta, GA
>
>
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