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CC's

Discussion in 'XJ Technical Chat' started by konartis, May 3, 2008.

  1. konartis

    konartis Member

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    I have a question. How do you tell what size a motorcycle is by cc's. I know that mine is a 650 2500cc's. Is there a chart for this? The reason I ask is because a friend of mine just bought a Yamaha heritage special. Dont know the year model or size. It does say 1800cc's on the side. I am thinking its a 250 but I am unsure. Thanks in advance.
     
    konartis, May 3, 2008
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  2. flash1259

    flash1259 Member

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    cc's isn't a measure of power, it's a measure of displacement. If you want to compare it to the displacement of a car, a 350ci chevy is 5.7 liters or 5700cc's
     
    flash1259, May 4, 2008
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  3. jeepsteve92xj

    jeepsteve92xj Member

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    but the 550/650/700/750 designations on the motorcycles is the approximate true displacement. 550 = 550cc, 650 = 650cc and 700 = 700cc. 1800 = 1800cc

    Some of the designations are only close to the real displacement. Give or take a few cc.

    cc = ci (per Google)
    550 cc = 33.5630593 cubic inches
    650 cc = 39.6654337 cubic inches
    700 cc = 42.7166209 cubic inches
    1800 cc = 109.842739 cubic inches
    (250cubic inches = 4096.766 cubic centimeter)
     
    jeepsteve92xj, May 4, 2008
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  4. RickCoMatic

    RickCoMatic Well-Known Member

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    The Heritage Specials are XS Bikes. They are quite a nice ride IF it was well maintained and does not need too much work.

    I think they came in both a 650 and a 750 Vertical Twin.

    I had a '79 XS-650 Special with Rear Disc Brakes.
    Definitely a fun machine.
    Kick start, Dual Points and Condensers with room to advance the Timing a few degrees for a real pull and growl.

    THAT is a Bike that you definitely want to have the Factory Manual for.
    Although simplistic in design ... they are maintenance intensive!
     
    RickCoMatic, May 4, 2008
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  5. ZaGhost

    ZaGhost Member

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    Hehe... I know what you're seeing...

    Your 650 is 650 cc
    The 2500 cc you are seeing is the oil capacity....
    My 400 says 2200 cc ....stamped down near the oil filler cap...
     
    ZaGhost, May 4, 2008
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  6. ryan_975

    ryan_975 Member

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    I was just about to post thread asking what that was for. I had a hunch it was oil capacity, but I didn't want to fill my bike with 2.5L of oil and it be too much... or worse... not enough.

    To continue with your explanation, the actual displacement of the engine (at least on mine) is stamp on the front of the motor between the two and three exhaust port (653cc for mine again).
     
    ryan_975, May 4, 2008
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  7. ZaGhost

    ZaGhost Member

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    Well the stamp on the engine reads 2200... manual states...
    2.2L for Periodic oil change &
    2.5L With oil filter replacement...


    But either way the fill window is always your guide... as reality doesn't always live up to manual specs :)
     
    ZaGhost, May 5, 2008
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  8. RickCoMatic

    RickCoMatic Well-Known Member

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    Nothing beats the "Eyeball method"

    You KNOW you got it right when you watch the fill happening.
     
    RickCoMatic, May 5, 2008
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