More Hp Out Of A 40 Yamaha

[quty06]

89 - 90 you had it that year, and i just goin to make it this millenium era! (20 yrs later)

BTW nice & good speed also.

[Phil McDaniel]

J, Before offering you some info. to help, I need to know 2 things. What type ignition(pack,stator,etc) are you running and where are you from?? Phil

[Mark75H]

He's in Texas

[yamonster]

Just keep in mind that set up, and props are more important than th HP numbers. All the basic stuff works well on that engine. Give us all the details of the whole rig.