That's what I thought Rick.
You reminded me of an MG-TC that Ken Miles drove at the Palm Springs
road race. ('52??)
It was supercharged and because they couldn't find a head gasket that
wouldn't blow,
they hand lapped the head to the block and didn't use a gasket.
Thanks Rick,
Bryan (x-flagman)
Rick Byrnes wrote:
>You are right Bryan.
>Flatness, waviness and finish need to be very controlled when using the
>multi layer gaskets, just like we didn't have in the days of the embossed
>steel shim gaskets. I see this technology as the next logical evolution of
>the old steel shim, but this one works. Embossment is better, and rubber
>coatings work well.
>The very fine finish actually required a new way of looking at the surface
>but in any language it is smooth as a babys bottom, and not many
>bumps.....Waviness is another critical requirement, and is almost never
>accounted for with the old ways of looking at machining specifications.
>Since I use metallic "O" rings to seal combustion on the turbo motor, my
>surface requirements have been the same. I finally found a machinist to
>give me the finish that the metal to metal joint requires. They typically
>use 7000rpm cutter speed with a very slow feed rate on my aluminum cylinder
>head.
>
>Rick
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