Hey everyone, I have a 1984 Del Magic with the 470 in it. I know, I know, the 470. But anyway, when I put antifreeze in the motor it come out of the sterndrive where the raw water enters. So I took the lower end of the stern off and the propeller housing where the pipe goes up to the top end was melted. I also took the pump apart and the propeller was bad. Would that let engine coolant in to the stern or is it a bad heat exchanger? Any help would great.
Ok... your engine has been overheated.. That's why the plastic water pocket cover is melted. That needs to be replaced. The anti-freeze coming out indicates that you also have communication between the freshwater cooling and the seawater cooling. This could happen in the heat exchanger, or you could have a head problem, cracked, or leaking gasket.
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1972 Bertram 'Bahia Mar' 20
2006 Mercruiser 4.3MPI (0W617679) w/Alpha 1 Gen II (0W829301)
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