1986 Johnson 40hp upgrade

[bskjesol]

Hi<br />Does anyone have experience with upgrading a twostroke Johnson 40hp to 60hp. My local dealer say it will run easier and use less gas. But will the engine suffer from it?<br /><br />Also, at which rpm is it rated 40hp? And what is max rpm for Johnson 40 hp (thinking of installing tachometer)<br /><br />Thankful for any help!<br />Bjornar

 

[bhalsdorf]

Re: 1986 Johnson 40hp upgrade

I hope you mean you are changing motors from 40 hp to a 60 hp. Because there is no way I know of to get 60hp out of a 40hp motor.

 

[JB]

Re: 1986 Johnson 40hp upgrade

Howdy, Bjonar.<br /><br />There were 40, 50 and 60 hp engines built on the same basic block, but the cost of converting a 40 to 60 specs would be a lot greater than just tracking down and buying a 60.<br /><br />Good luck.