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Is an outboard faster than a Inboard?

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  • Is an outboard faster than a Inboard?

    Just wondering if you had two for the same boats one with a 115hp outboard and a 115 hp inboard what one would be faster?

    My boat for example comes in both trim version inboard and outboard. Just curious. I would think an outboard.


  • #2
    Re: Is an outboard faster than a Inboard?


    I would think outboard too....
    It would be lighter......
    Disclaimer!: In my inexpert opinion......

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    • #3
      Re: Is an outboard faster than a Inboard?

      inboard, more room to hide the nitrous bottle
      NO PERSONAL QUESTIONS, THIS IS WHAT THE FORUM IS FOR.

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      • #4
        Re: Is an outboard faster than a Inboard?

        lol, bit

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        • #5
          Re: Is an outboard faster than a Inboard?

          lol. bt

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          • #6
            Re: Is an outboard faster than a Inboard?

            What type of outboard? 2 stroke or 4 stroke?
            sigpicIf it were easy, any Caveman could do it.

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            • #7
              Re: Is an outboard faster than a Inboard?

              Well,....... There Aren't any 115hp I/Os,.......

              And,.....

              Outboards don't come with anymore than about 300hp........
              But Twice that is not unknown in the I/O world......

              As noted,........
              This is an Unanswerable Question,....... Tooo many Variables.......
              Any Grease is Better,..... Than No Grease at All.......

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              • #8
                Re: Is an outboard faster than a Inboard?

                While Bondo is correct, the answer, if they are close to the same prop shaft horsepower, is that the OB will be significantly faster. Even 4 strokes are typically 400 - 500 lbs lighter than an I/O. BTW, Yamaha just announced a 350 V8, 4 stroke OB
                Keep the faith!!! We'll be back stronger than ever

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                • #9
                  Re: Is an outboard faster than a Inboard?

                  An equal HP Evinrude ETEC would probably blow a Sterndrive out of the water since they are much lighter.

                  I think the 225 ETEC weighs about 100lbs less than comparable 225 4 stroke OB....

                  Assuming it was propped correctly......
                  ----------------------------------------------------------------------------------
                  I use xxx oil and have never had a problem........
                  This post was created with OpenSuSE x64 Linux!

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                  • #10
                    Re: Is an outboard faster than a Inboard?

                    To me its always what is more cost affective. I just spent about 3 grand so I could install a 454 with about 360hp. To get 360hp in a outboard I am sure it would cost me ten times that.
                    So yes a outboard is faster because everything is lighter including your wallet.
                    But then there is, the weight of a class of I/O motors (ie small block Chevy) is around the same weight no matter what HP you get out of it. Just look at Nascar motors. 800+hp out of a (I think) 351ci block. For the HP from that motor the weight is nothing. So I guess it really comes down to weight and how many HP you get per pound is the better motor. Being the average person is not going to build a Nascar motor for a boat the outboard ends up being a better choice for most.
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