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Replacing my 9.9 with a new 15 hp
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<blockquote data-quote="Boat2fast" data-source="post: 340024" data-attributes="member: 13358"><p>That 25 weighs around 85lbs. It is the same as an 18hp. This is the first year for this 25. OMC took the 18hp(Fastwin) used different pistons, cylinder head, larger carburetor, and ran the rpm range 1000rpm higher. They called it a Sportster. Maximum rpm is 6000 rpm vs 5000 for the 18hp. </p><p> Your early 25hp is a BigTwin. It's heavier by 50lbs, or so. These engines grew into 30,35,40hp models and that basic engine survived up through the 80s. Putting your engine on a 10ft rowboat might swamp it. Maybe look around for a 15-16ft rowboat that can comfortably hold it. It was the top dog in its day.</p></blockquote><p></p>
[QUOTE="Boat2fast, post: 340024, member: 13358"] That 25 weighs around 85lbs. It is the same as an 18hp. This is the first year for this 25. OMC took the 18hp(Fastwin) used different pistons, cylinder head, larger carburetor, and ran the rpm range 1000rpm higher. They called it a Sportster. Maximum rpm is 6000 rpm vs 5000 for the 18hp. Your early 25hp is a BigTwin. It's heavier by 50lbs, or so. These engines grew into 30,35,40hp models and that basic engine survived up through the 80s. Putting your engine on a 10ft rowboat might swamp it. Maybe look around for a 15-16ft rowboat that can comfortably hold it. It was the top dog in its day. [/QUOTE]
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Replacing my 9.9 with a new 15 hp
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