converting a 9.9 to a 15

[madog99]

another question for the group , has anybody got a rough idea of how much it would cost to convert a 9.9 to a 15 if it was done by a shop . I'm looking at 2 stroke's if that makes a difference .
thanks

[jiggy2006]

be cheaper to sell & buy a 15hp. i wouldnt spend the money on the conversion personally, especially if its running healthy.

carb jets (maybe the whole carb), intake & reed cage are probably different from 9.9 to 15hp.

cost of parts + labour !? COMPARE that to SELLING & buying a 15hp!?

[mikemicropterus]

It depends on the model and the year. Most mercs it's just the carb but that can get pricey upwards of $200 plus labour. If it is an 93 or older Johnson/Evinrude it is just a carb. If it is older it can be a carb and exhaust tube. Usually.
Suzuki is a carb, and and that is expensive. BUT.....

My 9.9 puts out about 25hp and I put a 93 carb on an 87 motor, ported and polished a with .030 oversize bore and Boyesen reeds. It idles down to 500 rpm and will almost hit the rev limiter at 6400 rpm. FLAWLESSLY.
I can run a 12.5 inch pitch prop and it will push my Princecraft Fisherman to almost 40mph on gps.
The cost was for the reeds and pistons the rest I wangled and got from warranty items(carb) and still have a few left.
It can be done and can be done cheaply if you have the know how and the resources.