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Thread: Mercury 70

  1. #41
    Sam Cullis Mark75H's Avatar
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    A valve like that would not be called a "power valve" it would be a "sleeve valve". If you are building something as monsterously complicated as a sleeve valve motor there are lots of possibilities, but nothing remotely related to Plan-b's aspirations. It would require a completely new motor and I agree, you would have something with immense power potential.
    Since 1925, about 150 different racing outboards have been made.


  2. #42
    FFX-61
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    are not all "sleeve valve" modas 4 choke? like the Aero, i think thats it,

  3. #43
    Sam Cullis Mark75H's Avatar
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    with a supercharger they don't have to be, do they?
    Since 1925, about 150 different racing outboards have been made.


  4. #44
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    there was one, but the valve was in the head, single valve, on the intake side.
    Lotus.

  5. #45
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    i was thinkin, why don't we just inject the air and boost in to the cyl with the fuel at the head. then thares no valve drive or extra movin parts. maybe shrink the intake ports, cuzz just be movin oil for the most part.

  6. #46
    Sam Cullis Mark75H's Avatar
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    Quote Originally Posted by Fast Fred View Post
    i was thinkin, why don't we just inject the air and boost in to the cyl with the fuel at the head. then thares no valve drive or extra movin parts. maybe shrink the intake ports, cuzz just be movin oil for the most part.
    It can be done. The main reason it is not done that way in practice is the device to do it is the same size as the rest of the engine.
    Since 1925, about 150 different racing outboards have been made.


  7. #47
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    hey plan-b,
    theirs a 70CES copy up for grabs over at the scream n fly,

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