Is a Yamaha 150 / 200 carb swap possible???

[nehring]

I have a 1999 Yamaha 150 2-stroke. It is the "Plain Jane" model... C150 I think it's called. I was looking at specs and noticed that the 150-175-200 & 225 bore and stroke specs are all the same. What is it that makes these outboards differ in horsepower ratings? The only thing that I can think of is the carburation.<br />If I am correct, could I swap my carbs with those from a 200? Would I then have a 200 horsepower outboard? Or is there more to it then that? I am curious! If this is a true and feasible assumption... what year model 200hp outboard carbs would work on my '99 150?<br />Thanks in advance!<br />Brian

 

[bigshrimpin]

Re: Is a Yamaha 150 / 200 carb swap possible???

Carbs alone will not make your 150 into a 200hp. <br />There are other parts like heads, reeds, exhaust mods that will need to happen in addition to the carbs. <br /><br />Check out the Yamaha-Motor online parts catalog and compare the two engines. <br /><br /> http://www.yamaha-motor.com/outboard/parts/home.aspx <br />----------------------------------------------------------------<br /><br /> http://www.boatsetup.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=7;t=000754#000000 <br /><br />"Bolting on the carbs is good for about 300 rpms. Depending on the model, there are other bolt on mods that will also boost horsepower. Pro V 200's already have the carbs. If the 150 is a vertical front half model, it can be boosted to over 200hp with bolt ons."

 

[JB]

Re: Is a Yamaha 150 / 200 carb swap possible???

Duplicate post.