9.9 conversion to 15

tx1961whaler

Vice Admiral
Joined
May 31, 2008
Messages
5,197
Re: 9.9 conversion to 15

It'll probably fit, but you won't get 15 HP out of your motor without changing a few other things.
 

mistered29

Recruit
Joined
Mar 30, 2009
Messages
2
Re: 9.9 conversion to 15

what else needs to be changed?i noticed the hole on the intake at the head is 1 in.and the hole at the carb is 3/4.i see a carb on ebay off a 15 hp and he says the hole is 1 an a 1/4 on the carb.
 

wbeaton

Commander
Joined
Jul 30, 2006
Messages
2,332
Re: 9.9 conversion to 15

Probably, but it won't make your 9.9 a 15. Also, there were some changes on the 15 hp carbs around 1994 so it may be that much different still.

If you want a 15 hp I'd recommend you sell your 9.9 and buy a 15 hp. It will be cost prohibitive to try to convert yours. The carb thing is a myth. It was only true for a few years in the 1970's (1974-76 or 77).
 

wbeaton

Commander
Joined
Jul 30, 2006
Messages
2,332
Re: 9.9 conversion to 15

tx beat me to it. If you are serious about conversion you will have to pour over the parts catalogs at BRP.

epc.brp.com
 
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