<VV> Aluminum Corrosion

[RoboMan91324 at aol.com]

All,

I think we have all seen what Tim referred to as frosty corrosion on aluminum 
heads, pistons, cases, etc.  I guess my questions will get some subjective 
answers but here goes.

At what point will aluminum corrosion be considered a serious enough problem 
to just dispose of the parts?  I imagine that corrosion on pistons would be 
the most concern due to the beating they are expected to take.  

I guess corrosion in the combustion chamber of heads could also be a concern. 
 I am assuming that the corrosion causes no structural issues on the 
components other than possibly the pistons.  Do you agree?  

I further suspect that the issues with heads and cases would mostly be 
limited to sealing surfaces.  Has there been corrosion related issues between the 
valve seats and aluminum?

Thanks in advance,

Doc

~~~~~~~~~~~~~~~
In a message dated 11/14/2008 8:58:38 AM Pacific Standard Time, 
virtualvairs-request at corvair.org writes:

> Message: 4
> Date: Fri, 14 Nov 2008 10:19:08 EST
> From: N2VZD at aol.com
> Subject: Re: <VV> CROWER  NOT CROWLER CAM QUESTION
> To: virtualvairs at corvair.org
> Message-ID: <c74.3f65e033.364ef0ec at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
> 
> i mis spoke..it is a crower cam.  thanks to those who pointed this out  so 
> quickly...now for the rest of the info on it?? man i feel like a junkyard dog 
> after getting this wad of rust apart!!   cam ,  lifters , crank , etc ok, 
> heads of course have a valve seat hanging around   an exhaust valve. wrist pins 
> are all set up.. pistons are wads of frosty   corrosion. most cylinders are 
> probably way to pitted to save..after already  being bored 060.
> regards, tim colson


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