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Thread: 84 250r gas ratio

  1. #1
    Join Date
    Oct 2007
    Location
    corinth ms.
    --
    77

    84 250r gas ratio

    hey guys just rebuilt my r what would be the best mix for my gas? 32 to 1? how many ounces of oil to 1 gal. of gas. thanks Joe

  2. #2
    Join Date
    Mar 2006
    Location
    WI
    --
    128
    Not sure about the 84, but the 81 (basically the same motor) recommends 20:1 on the gas tank. For break in, it is usually best to run a bit richer of a ratio, from what I've heard

    http://www.dansmc.com/2stroke_oil.htm scroll down a bit, there is a chart. Usually this chart is on the back of a 2-stroke bottle (but not always).

    EDIT: The service manual I have has an '83-'84 addendum, and shows 20:1 (Second line from the bottom)
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    Last edited by jaykup; 02-10-2008 at 01:27 PM.
    1985 Honda 350x - Powroll 430 Kit & Lots more
    1984 Yamaha YZ490 - All the 2-stroke goodies

    Homemade "Trike"

  3. #3
    Join Date
    Jul 2005
    Location
    Richland WA
    --
    808
    Yep, rich on oil for break in, a cylinder breaking in makes more heat.

    Ive run 10:1 in my 86, but the oil smoke is bad.

    128 ounces to a gallon (right?)

    For 32:1, divide 128 by 32 = 4 ounces.

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