Yamaha F90 vs F100

[Slowtoplane]

In 2002 Yamaha distributed an F100 and F80 in Canada, now they have replaced these with the F75 and F90.<br />My question is what do I have to do to unleash the 10hp from my current F90? Is it a carb kit, CDI Box, other? The displacement, compression, crank, Rods, Pistons, and gear ratio's are the same (F90-F100), what are the differences that I'm missing?<br /><br />Any info appreciated.

 

[rodbolt]

Re: Yamaha F90 vs F100

hello<br /> for 10 Hp I would just change the decals.<br /> good luck and keep posting

 

[Slowtoplane]

Re: Yamaha F90 vs F100

rodbolt:<br />Are you suggesting that this is the only difference; "decals"? Are you surmising this, or can you confirm this to be 100% fact?<br />If 100hp is some kind of "bolt-on" away, I wanna play! As for re-decaling, ssssh, dont want anyone to know we really got 100 ponies under the cowl!

 

[phatmanmike]

Re: Yamaha F90 vs F100

remember, manufacturers are not required to "actually have" the exact hp on the hood...only within a certain percentage, some say 10%, while ive seen others say 20%<br /><br />when merc used to make inline 6 outboards, they had a 150hp, but that same year they also made a 150 v6(new model) and didnt want competition among their own models, so they changed the decals on the inline 6 150hp to read 140hp....<br /><br />get where im going...<br /><br />your motor will rarley ever , on its finest day, make the advertised hp it says......<br /><br />listen to rodbolt, if im correct, he is a yamaha certified tech...<br /><br />m ikey