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1980's Johnson/Evinrude 20/25hp conversion to 30hp with pics
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<blockquote data-quote="user 12972" data-source="post: 333907" data-attributes="member: 12972"><p>Thanks Jasper. I did some more research on the BRP website as well and from what I can tell the carb, high speed orifice, low speed needle, intake, reeds, and reed stops were slightly different, as they all had different part numbers. As availability of these parts were lost part distributors superceded to the same part that was used in the 87 30hp and sold them to the 84-88 jonnyrudes 20-35hp. So I'm faced with trying the cheap way and try a 63D high speed orifice and hope for the best (I have a 61D in it now) or I'll have to replace the manifold, reeds, reed stops, and gaskets. (They actually sell a "leaf" plate assembly which comes with most of the above parts for a single decent price, but the intake manifold is between $114 and $142 new. May not be worth trying to get 5 hp with all that. It would be nice to have a true 30hp motor though, as opposed to 25hp at the prop.</p></blockquote><p></p>
[QUOTE="user 12972, post: 333907, member: 12972"] Thanks Jasper. I did some more research on the BRP website as well and from what I can tell the carb, high speed orifice, low speed needle, intake, reeds, and reed stops were slightly different, as they all had different part numbers. As availability of these parts were lost part distributors superceded to the same part that was used in the 87 30hp and sold them to the 84-88 jonnyrudes 20-35hp. So I'm faced with trying the cheap way and try a 63D high speed orifice and hope for the best (I have a 61D in it now) or I'll have to replace the manifold, reeds, reed stops, and gaskets. (They actually sell a "leaf" plate assembly which comes with most of the above parts for a single decent price, but the intake manifold is between $114 and $142 new. May not be worth trying to get 5 hp with all that. It would be nice to have a true 30hp motor though, as opposed to 25hp at the prop. [/QUOTE]
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1980's Johnson/Evinrude 20/25hp conversion to 30hp with pics
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