formula?

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  • der affe
    Moderator
    Technical
    • Dec 2005
    • 8452

    #1

    formula?

    anyone know the formula for finding displacement for a 6 cyl? i know that a 4 cyl is BORExBORExSTROKEx.0031416 (or PI), but what is it for a 6 cyl?
    greg
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  • Axxe
    No R3VLimiter
    • Aug 2004
    • 3355

    #2
    displacement = (bore ^ 2) * (stroke) * (pi) * (number of cylinders)

    pi = 3.14


    Keep it slideways!!

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    • der affe
      Moderator
      Technical
      • Dec 2005
      • 8452

      #3
      (bore ^ 2) = bore x bore right?
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      • madjurgen
        E30 Fanatic
        • May 2005
        • 1203

        #4
        Originally posted by Axxe
        displacement = (bore ^ 2) * (stroke) * (pi) * (number of cylinders)

        pi = 3.14

        wrong

        bore is the diameter, you need to divide all that by 4

        make sure your units are in centimeters

        As time went on, the factory developed the car each year, making it faster, more comfortable, and capable of handling at higher speeds.
        You don’t want this. You want the trickiest, most dangerous, oldest model you can find. Only then can you prove to the world that you’re a man.

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        • der affe
          Moderator
          Technical
          • Dec 2005
          • 8452

          #5
          if i am looking for a 6 cyl whay do i devide it by 4? do you mean 6?
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          • madjurgen
            E30 Fanatic
            • May 2005
            • 1203

            #6
            no

            bore = d = diameter of cylinder

            r = d/2

            when squared

            r^2 = d^2/4

            come on people, simple math here

            cross-sectional area of one cylinder*length of stroke*number of cylinders=total volume

            As time went on, the factory developed the car each year, making it faster, more comfortable, and capable of handling at higher speeds.
            You don’t want this. You want the trickiest, most dangerous, oldest model you can find. Only then can you prove to the world that you’re a man.

            Comment

            • der affe
              Moderator
              Technical
              • Dec 2005
              • 8452

              #7
              thanks, i actually figured it out for myself. just did BORE X BORE X STROKE X PI....DIVIDED BY 4 TO GET THE DISPLACMENT OF A SINGLE CYL THEN X 6 TO GET THE DISPLACEMENT OF A 6 CYL
              greg
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