Originally Posted by homer12
Well, I've never touched the thermostat so probably time to check. This would be the one on top of the water pump right? Is it a 143 or 160 t-stat to be sure?
^ according to engine nut it should have a 140° thermostat. I ran my 351w without a t-stat for a summer (mistake unknown to me when I bought my boat) and it ran at 140. I installed a 160° thermostat from http://www.bakesonline.com/detail.aspx?ID=844
and it operates right at 160-165 on my gauges.