I put this out on the forum a few mos back, and got some tremendous help, thanks, gents. Last fall I replaced the water pump ( which was actually still in great shape ), replaced the thermostats and poppet valve. This past weekend I put her in the water, and fired her up, tied to the dock. The water pump got no assistance from running through the water and have water forced up to the top of the engine. It ran for 40 minutes and NO sign of overheating, no overheating alarms. QUESTION: If the engine ran for 40 minutes in 42 degree water, and there was no alarm, is 40 minutes of run time long to enough to believe that my overheating problems are resolved? Thanks in advance. Hot Ajax