On Wed, 23 Jul 2008 23:20:03 -0700 (PDT), Tim
wrote:

Well, one thing is that engine heads are sort of a soft cast iron and
after years of salt water exposure, the minerals of said water
actually impregnate into the heads and cause the cast iron to break
down. just like an old rusty iron water pipe that's laid bare to the
elements over several years.

So quality machine work is next to impossible

Never thought of that. Thanks, Tim.

--Vic