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  1. #1
    Classifieds Super License GT-Subject's Avatar
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    07.16.12
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    Default 13B Bridgeport premix ratio?

    We have built a 13B Bridgeport with no oil injector pump for the Formula Libre class here in Canada - does anyone have any recommendations for premix ratio?

    Thanks for your help......

    Paul "GT" Subject
    #77 Formula Mazda

  2. #2
    Banned
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    02.04.02
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    64:1 quality 2-stroke oil to start. Some may recommend 1oz to a gallon (128:1) but you are better off starting out on the oil-rich side. You are going to hear ratios all over the place.

    Things to consider: are they talking about a bridgeport turning 11K or a streetport turning 9K?
    are they talking about regular crankcase oil or 2stroke oil?

    If you use a quality castor-based 2 stroke oil (my preference) it WILL separate from the fuel in cold temps if allowed to sit. Mix in 5-10 gallons batches and don't let it sit in the cell overnight if it's cold outside.

  3. #3
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    6 ounces in five gallons, or what the engine builder specifies

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