new to all this was my dads. have learned alot in a short time why would the factory send the motor out without a thermostat in the housing? did some motors get thermostast and some not. changing out the water pump/impeller due to no water coming out of exhaust port holes have plenty of exhaust out of trim tab. in the past i remember water spraying out of exhaust holes. i am correct on this right? any help on this would be appreciated