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Need advice on a outboard...
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<blockquote data-quote="Johny25" data-source="post: 313920" data-attributes="member: 7791"><p>A new merc 25hp will by far out perform that old 20hp merc. And as far as the shaft length it will also have a significant impact. If you do not have a jack plate on your current old 20hp merc then you have way to much motor in the water causing significant drag. You can easily expect 25-30mph with a newer 25hp on that grizzly. Also if that old 200 merc is pre 85' then it is not putting out a true 20hp anyway. Before 1985 (give or take a year) merc rated hp at the crank, not the prop.</p></blockquote><p></p>
[QUOTE="Johny25, post: 313920, member: 7791"] A new merc 25hp will by far out perform that old 20hp merc. And as far as the shaft length it will also have a significant impact. If you do not have a jack plate on your current old 20hp merc then you have way to much motor in the water causing significant drag. You can easily expect 25-30mph with a newer 25hp on that grizzly. Also if that old 200 merc is pre 85' then it is not putting out a true 20hp anyway. Before 1985 (give or take a year) merc rated hp at the crank, not the prop. [/QUOTE]
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