modify f80 yamaha to give 100 h.p...Dealer says it can be done but won't give in

[cptngreg]

The dealer I bought the motor from originally told me that the f80 and the f100 were the same motor (identical) except for some modifications - possibly to the carburation system - anyone know anything about this? Please help if you can! Thanks!

[JB]

Ahoy, CptnGreg. The reason the dealer wont tell you is probably that he doesn't know. I don't either. Yamaha, like other manufacturers, doesn't want you to know and doesn't want their competition to know.If it's anything like the 2 strokes, it's much cheaper to trade than to try to hop up the lower HP version.Red sky at night. . .JB

[MIKE F]

cptngreg,This doesn't really answer your question on Yamaha butthe new Evinrude 75,90 and 115HP engines are the exact same enginethe only difference is in theprogramming of the computer.

[curtis1698g]

DID YOU EVER FIND OUT IF THIS MOTOR CAM BE MODIFIED I HAVE A 2000 F80 THAT I HAVE BEEN LOOKING FOR THIS INFORMATION BUT DEALER REFUSES TO IVE OR DOSENT KNOW