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    66 merc 500 3 blade prop problem

    Ok so I am new to the boating world im doing a restoration on a 66 14 ft runabout while I have her apart I have some questions. The engine is running great but with only a 14 ft boat im hitting about 25 mph tops wide open on calm water. I have a 3 blade 13 pitch prop I believe. And I tried to...
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    66 merc 500 help please

    Hey yall I need some help with my engine Im trying to figure out how to check the lower unit fluid and where to get some or if I can run a certain kind of rearend fluid in it or something
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    first boat and restoration

    Hello to all been creeping on the forum but never really posted. I got my first boat last spring from the original owner its a 1966 Duo X15 (I believe) with a 1966 merc 500. I ran her all last summer she did fairly well forr her self. So the other day I got her out of storage and decided that...
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    1966 duo porblems

    Hi I'm new to the forum and new at boating ... I have a 1966 duo fiberglass boat with a 1966 merc 500 on the back the issue I'm having is that I'm topping out at 21 mph (gps) I do not have a tach but I can tell u that's it's screaming at that speed I have a 3 blade prop on it now and it came...
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