Has anyone fitted an older Nissan 15HP 2-stroke with the 18HP carb? I'm wondering if it's really a plug-n-play operation on the carb only, or are there other items involved? The basic engine block seems to be the same. Would like to know, if it works, would the 3 added horses be noticeable, not speed-wise but power-wise with the properly matched prop. I'm not in a hurry to get anywhere but may want to carry more gear.
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Nissan 2-stroke 15HP to 18HP Conversion?
- Thread starter PATRIOT2
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nathanielrthomas
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Fuzzygrub is right. Youll need to replace the whole powerhead. Ive done it, but its very expensive for the amount of power youll get. I suggest just getting an 18, and rebadging it with whatever you need.
Guess I was mistaken. The bore on the 18HP shows to be a little larger than the 15HP but the stroke is the same. If the powerhead would have to be replaced I won't mess with it then. I was hoping the bore of the carb was the only difference. I don't have an 18 carb anyway and they may be hard to find or guys may be real proud of them.
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