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Subject:Re: Heads, corrosion etc.
From:Todd Francis
Date:Mon, 8 Dec 1997 18:56:17 -0800

Tim Smith wrote:
>
> Hi,
>
> Mark wrote:
>
> " So we are back to: How do we keep this head area surrounding the water
> jacket un-molested by coolant?

 . So get a good
> epoxy coating in there that won't corrode away. Once corrosion does
> start the alum. oxide puffs up nicely and holds the seal off the head,
> acelerating the process. Positive feedback.  bye, Tim

- After doing the ceramic thing on my heads (still holding good) I am
still sold on ceramics for this problem. However there may be a even
better process avalible. Someone on the list brought up the idea of
using a anodize process on the heads developed by General Magnaplate
Corp. It is supposed to be very anticorrosive. If this were done then
the ceramic was put on over the anodize to help keep heat from
transfering from the head to the rubber headgasket (should help keep the
headgasket from deteriorating) and the combustion chambers and exhaust
ports were done to keep heat out of the head and in the exhaust you
might end up with some very high mileage heads. I wonder though if you
stop all corrosion on the heads will it just transfer to the engine
block? That is why boats use sacraficial plates on them. The plates
corrode first so the expensive parts don't.
-
Todd Francis           Ridgefield, Washington USA
'86 Westy Syncro
'91 Tristar

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