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Yam 225 v6 2 stroke exhaust drilling

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  • Yam 225 v6 2 stroke exhaust drilling

    Childish and silly, I realise, but does anyone have exact and precise guidelines about drilling the exhaust chamber to exit above the waterline?

    thanks in advance.

  • #2
    For what purpose(s) is the motor to be drilled?

    What type of Yam two stroke? Carburetted? HPDI? EFI?

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    • #3
      Originally posted by boscoe99 View Post
      For what purpose(s) is the motor to be drilled?

      What type of Yam two stroke? Carburetted? HPDI? EFI?
      Purely for the point of being silly and it sounding a little. It’s a 88’ 225 V6 carbs 2 stroke. Think I maybe mentioned it was 2 stroke. Also add, it’s not my engine.

      Thanks.

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      • #4
        Doesn't it have exhaust reliefs on it? Or are you trying to.modify the exhaust because you think it will be faster?

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        • #5
          Originally posted by flyingscott View Post
          Doesn't it have exhaust reliefs on it? Or are you trying to.modify the exhaust because you think it will be faster?
          It’s not my engine Flying Scott. I think he is trying to make it sound better. The boat is a bit of a hot rod thing. Just for effect really.

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          • #6
            With lots of noise it will be faster for sure.

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            • #7
              Just start drilling until you get that sweet exhaust note that you desire!..... Great Idea!!!

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              • #8
                Originally posted by racerone View Post
                With lots of noise it will be faster for sure.
                Don’t think that’s his intention. Just for noise.

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                • #9
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                  Originally posted by robert graham View Post
                  Just start drilling until you get that sweet exhaust note that you desire!..... Great Idea!!!
                  Many have done it. He is just after a procedure or guide.

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