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40 to 50

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  • 40 to 50

    Does anyone know the difference between a 40 & 50 4 stroke? Can a 40 be easily increased to 50 by, for example, swapping the carb jets from a 50? Thanks.

  • #2
    Looked into doing it to my Honda.New head with larger valves, new camshaft and rejet the carb.

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    • #3
      I had attempted to get this type of info on the 2 stroke being I wanted to get another 10 horses out of my 40. Understand that it a matter of changing carbs. But got no responses on this site. Maybe you will luck out.

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