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Change Carburetor for more HP?
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<blockquote data-quote="mr coastie" data-source="post: 493758" data-attributes="member: 24525"><p>That was the trick we used to beat the hp limit on private boats in lakes that were restricted to less than ten hp , We changed carbs from 9.9 to 15 hp model (1981 model Evinrude) no manifold change required! Kept the engine cover with the 9.9 showing! Had a buddy with an identical boat and 9.9 and I would outrun him all day long. Finally told him of the carb upgrade made the difference….presently doing a 20hp to 30hp carb and manifold swap on a Evinrude 1991 model.they run soooooo much better!</p></blockquote><p></p>
[QUOTE="mr coastie, post: 493758, member: 24525"] That was the trick we used to beat the hp limit on private boats in lakes that were restricted to less than ten hp , We changed carbs from 9.9 to 15 hp model (1981 model Evinrude) no manifold change required! Kept the engine cover with the 9.9 showing! Had a buddy with an identical boat and 9.9 and I would outrun him all day long. Finally told him of the carb upgrade made the difference….presently doing a 20hp to 30hp carb and manifold swap on a Evinrude 1991 model.they run soooooo much better! [/QUOTE]
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