ORIGINAL: Spetz
But water cooled motors generally should be cooler.
Of what I heard, if you run your watercooled boat motor at car motor temps, you will quickly destroy it
Yes, I believe that is tue of an engine that is designd specifically for boats. In this case, he is useing a car/truck engine in a boat and water cooling it. (I personally would never put an engine designed for a car into a boat. I would also never watercool an engine that is designd with air cooling in mind. The same is true of the converse: I would never out a boat engine into a car and try to air cool it when it is supposed to be water cooled.)