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    Johnson 140hp Gear Ratio?

    I have no idea what my gear ration is. I'd like to have it for prop selection. The engines are Johnson 140hp 1989 & 1990 loopersw/ 25" shafts. Also, while we're at it: weight? Max RPM?<br /><br />Thanks!<br />Scott
  2. H

    Yamaha 70ETLK ('85?) rev limit?

    I have just purchase a used 70hp Yamaha and put it on the back of my boat. I am conserned with the prop. The boat, at WOT, is at 5500rpm. Is the prop limiting this(that would be perfect from what I've searched) or is this a rev limiter and I need to rethink my prop?
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