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Thread: calculating CCs?

  1. #1
    Join Date
    Nov 2004
    Location
    Fort Kent, Maine
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    2,132

    calculating CCs?

    Say I bored out an 84 250r 1.25 over, how many cc's whould that be? Also do you know the equation for that?

    Thanks

    Phil

    '85 350X-The Flagship
    Speedo, Chrome HL Guard, Rubber Steps
    DG Chrome Power, 6-Pack Rack, White Bros Skidplate, 400ex Carb

    '85 250ES Big Red-Working in Style
    Many Hondaline & Aftermarket Add-ons
    '84 250R-Old School Racer Project
    Too many Accessories to List
    '82 200E Big Red-The Tractor
    Rubber Steps, Tripmeter
    '85 250SX-Rider
    Various Accessories

    '13 CBR250R & '05 CBR600F4i-Road Toys
    Yoshi Slip-Ons & Fender Eliminators

  2. #2
    Join Date
    May 2002
    Location
    Southeastern Wisconsin
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    3,658
    This free calculator is great for easy calulations:

    http://www.virtualengine2000.com/Calculator.htm

    Just plug in the numbers and instantly know.

  3. #3
    Join Date
    Oct 2002
    Location
    Roanoke, VA
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    4,038
    Formula:

    BORE (mm) X BORE (mm) X STROKE (mm) X 0.0031416 = Engine Displacement in CC's

    Example: 92 X 92 X 69 X .0031416 = 1835cc

    This may be for a twin cylinder engine. Try using this formula without the second BORE calculation.
    [20:55] <waterpumper> putting a racing pipe on a Foreman is like putting a high dollar bikini on a 400 pound chick...just because it fits doesn't mean it looks cool

  4. #4
    Join Date
    May 2002
    Location
    Southeastern Wisconsin
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    3,658
    Quote Originally Posted by ATC crazy
    Formula:

    BORE (mm) X BORE (mm) X STROKE (mm) X 0.0031416 = Engine Displacement in CC's

    Example: 92 X 92 X 69 X .0031416 = 1835cc

    This may be for a twin cylinder engine. Try using this formula without the second BORE calculation.
    LOL, that formula doesn't work at all.

  5. #5
    Join Date
    Nov 2004
    Location
    Fort Kent, Maine
    --
    2,132
    Just plug in the numbers and instantly know.
    Not with dail-up! Lmao
    Thanks guys.

    '85 350X-The Flagship
    Speedo, Chrome HL Guard, Rubber Steps
    DG Chrome Power, 6-Pack Rack, White Bros Skidplate, 400ex Carb

    '85 250ES Big Red-Working in Style
    Many Hondaline & Aftermarket Add-ons
    '84 250R-Old School Racer Project
    Too many Accessories to List
    '82 200E Big Red-The Tractor
    Rubber Steps, Tripmeter
    '85 250SX-Rider
    Various Accessories

    '13 CBR250R & '05 CBR600F4i-Road Toys
    Yoshi Slip-Ons & Fender Eliminators

  6. #6
    Join Date
    May 2002
    Location
    Southeastern Wisconsin
    --
    3,658
    Quote Originally Posted by Maine_Triker
    Not with dail-up! Lmao
    Thanks guys.
    HUH? You download it to your computer and then run it.

  7. #7
    Join Date
    Nov 2004
    Location
    Fort Kent, Maine
    --
    2,132
    EXACTLY... it's take time to download...

    '85 350X-The Flagship
    Speedo, Chrome HL Guard, Rubber Steps
    DG Chrome Power, 6-Pack Rack, White Bros Skidplate, 400ex Carb

    '85 250ES Big Red-Working in Style
    Many Hondaline & Aftermarket Add-ons
    '84 250R-Old School Racer Project
    Too many Accessories to List
    '82 200E Big Red-The Tractor
    Rubber Steps, Tripmeter
    '85 250SX-Rider
    Various Accessories

    '13 CBR250R & '05 CBR600F4i-Road Toys
    Yoshi Slip-Ons & Fender Eliminators

  8. #8
    Join Date
    Oct 2002
    Location
    Roanoke, VA
    --
    4,038
    You're right OS86...it dont work. lol

    But this one should: http://home.quixnet.net/~cosmic/EngineCalc.htm
    [20:55] <waterpumper> putting a racing pipe on a Foreman is like putting a high dollar bikini on a 400 pound chick...just because it fits doesn't mean it looks cool

  9. #9
    Join Date
    Oct 2002
    Location
    Roanoke, VA
    --
    4,038
    Just plug in the first three boxes (# cylinders, bore & stroke) and then just click on the next box and the dimensions will pop up
    [20:55] <waterpumper> putting a racing pipe on a Foreman is like putting a high dollar bikini on a 400 pound chick...just because it fits doesn't mean it looks cool

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