35hp carborator in a 25hp johnson?

[fiver]

I was looking into buying a 1985 25hp johnson outboard.I was originally looking for a 30hp but I settled for the 25hp.. Now, what i was wondering is if by only changing the 25hp carborator with a 35hp carborator would that give me that extra 10 horse??? I heard that it was that easy and i was just wondering if you thought the same??

 

[steelespike]

Re: 35hp carborator in a 25hp johnson?

No expert here but would a carb increase the power on your car by what amounts to allmost<br /> 50%.I think on a car a carb and manifold <br />would give you about a 10% increase. <br />In my opinion if you want a 35 buy a 35.<br /> With enough tinkering you can probably do it<br /> But you could end up with a Frankinstiens<br />monster.

 

[G DANE]

Re: 35hp carborator in a 25hp johnson?

Differences on eighties Rudes/Johnnys are:<br /><br />20 - 25 HP, carb and head.<br /><br />25 - 30 Hp, intake manifold, leg exhaust tuning and thru-hub exhaust.<br /><br />Changing carb on a 20 will boost power, on a 25 will give you 5HP with carb and intake manifold, last 5 HP from leg and hub, and 4 deg ignition timing.