Re: Water pump theory question

[melugin]

I have ’79 and ’80 25hp OMC motors which are also giving me fits cooling. Thermostat is not the problem here. Knowledgeable sources say that the upper water tube grommet may swell requiring powerhead removal to ream out restriction. Other problem could be plastic deflector also under powerhead which has deformed. Any input along these lines?
Overheats with and without good thermostat.