1965 Johnson 16 HP outboard

EZ

Recruit
Joined
Jun 15, 2002
Messages
5
Can this engine's horsepower be increased by increaseing the size of the carb. main jet and running the engine at 5500 RPM, or is this to good to be true. EZ
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: 1965 Johnson 16 HP outboard

Howdy, EZ. <br /><br />Funny, it must be advancing age, but I do not recall a 16hp Johnny in that era.<br /><br />A larger throat and venturi carb, with approprite jets, should increase the available top end hp of whatever you have, but at the expense of poor atarting, poor idle and poor low speed performancce.<br /><br />The bigger carb would probably cost more than the engine is worth.<br /><br />My recommendation: don't bother.<br /><br />Good luck. :)
 
Top