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2 stoke/4stroke

If I switch from a 115hp 2 stoke to a 115hp 4 stroke, where will I feel the difference in performance? Top end? Load carrying capacity? Both? Other?

I'm considering a 115hp Johnson 2 stroke (carbs) vs a 115hp Yamaha 4 stroke. Yamaha doesn't offer a 25" shaft on its 115hp 2 stroke or I'd consider that too.

I've run a 115hp Mercury 2 stroke on my boat and it performed well. I don't like the 2+2 design Merc though soooooo.... decision time.

I mostly carry two people but if I carry four, that's an additional 400 lbs give or take, and I don't want to lose much zip. My 115hp 2 stroke handled if ok but..... 4 stroke? -I dunno- I don't really care about top end as long as I can keep it over about 30-32 mph. With two people, 35mph is do-able with my 2 stroke and I would't lose much speed adding two more people.

Anyhow, my only experience with 4 stroke is my Honda 20hp on a skiff and it just doesn't seem to have the load carrying capacity of a 20 hp 2 stroke. Frankly, I doubt it can keep up on top end with a 20hp 2 stroke either.

Anyhow, any opinions appreciated.

TIA, Rick

 PhantMan
Mar 21
2006
The biggest difference will be weight. 2 strokes may have faster throttle response but HP should be HP, assuming they don't lie about it. I still wouldn't trade my 4 stroke for a 2. A 4 stroke seems to be a lot smoother and runs better when you aren't WOT. If you are interested in max speed, all the time, go with the 2. That's what they do best. They will probably last longer going fast all the time too. Less moving parts. The 4 stroke is more for folks who want to run at reasonable speeds and be able to hear their passengers talk. gfretwell
Mar 21
   
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