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View Full Version : Boosting 9.9 up to 15hp


Guido
08-10-2011, 05:52 PM
Hi guys,

Anyone with some tech knowledge know if it's possible to convert a 2000ish model 2 stroke Yamaha 9.9 to a 15? Might get it done on the next service if possible.

Cheers,
Brenden
FishHunter
08-10-2011, 07:24 PM
Yeah raise the exhaust ports and fit bigger carbs
Guido
08-10-2011, 09:39 PM
Yeah raise the exhaust ports and fit bigger carbs


Thanks for that. Any idea on complexity of the job or is it easier trading up to a 15?
FishHunter
09-10-2011, 04:51 AM
its going to be easier and cheaper and more reliable in the long run to buy a new motor