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20 to 30hp Johnson
Not sure on that year. I know the carbs are different. The exhaust tuner
may be different along w/ the ports. Start w/ the carb and go from there. Should get you some power anyway. -- Tony My boats and autos - http://t.thomas.home.mchsi.com "swedishconnection" wrote in message ... Anyone knows anything about tuning a Johnson 20hp,1990,Two-stroke to 30hp?? I do gladly accept any advice on that!  matts"swedishconnection" wrote in message ... I have a Johnson 20hp,1990,Two-stroke.Just run 60 hours. To pull waterskies with my Zodiac I need 10 more hp. Does anyone know how complicated it is to "scare" the motor to 30 hp? How is it done? Grateful for any tip! matts |
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