"Chris" wrote in message
om...
snipped bit was here The stat that I took out was
140 degrees. Is this too cool or the right one for this engine?

I believe that is the right temp for the thermostat. At higher temperatures
the calcium will precipitate out of the cooling water and form scale in your
cooling passages, eventually blocking them. It doesn't happen in cars
because you have a limited amount of calcium available in the coolant (it
does happen actually but the amount available to precipitate out is limited
to what's available in the coolant). In a boat motor that has a whole
lake's worth (or ocean) to draw form it can add up.
--
Ken Heaton & Anne Tobin
Cape Breton Island, Canada
kenheaton AT ess wye dee DOT eastlink DOT ca