More power from little motor?

Squeakit

Petty Officer 1st Class
Joined
Jul 1, 2002
Messages
216
In looking at the specs for new Mercury motors, the engine displacement for the 2.5 and the 3.3hp is the same. The only difference is the gear ratio: the 2hp is 1:85:1, and the 3hp is 2:15:1 The 4hp and the 5hp are identical in displacement, and gear ratio. How can you get more power from the same size engine? Is there some simple trick I can do to pump up my little 2hp Yamaha without ruining it? I really like tinkering with engines but I don't want to mess it up. Thanks for your help.
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: More power from little motor?

Hi, Squeakit.<br /><br />Leave them be. If you start screwing with them without knowing exactly what you are doing you will regret it. :)
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: More power from little motor?

As the saying goes If you want more horsepower<br />buy more horsepower.<br />There is no simple upgrade for more horsepower.<br /> You risk creating a Frankenstien monster.
 

Squeakit

Petty Officer 1st Class
Joined
Jul 1, 2002
Messages
216
Re: More power from little motor?

Thanks guys; I'm convinced - I'll leave the little guy alone, it runs great, just slow but super lightweight and reliable. I wish someone would make a 5 or 6hp motor that only weighed 22 lbs. Oh well...
 
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