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Bing 54 fuel lines

in 2 Stroke Technical Questions 11 years ago

  • Re: Bing 54 fuel lines

    by » 11 years ago

    Those are float bowls vent lines. The vent lines need to be in a neutral pressure location. If they are in a negative pressure zone then the fuel can be sucked from the float bowls (not good when you are in flight).
    If it is in a positive pressure zone then it can flood your engine (also not good when you are in flight)
    These lines should not be modified in anyway and should remain stock configuration.
      
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  • Re: Bing 54 fuel lines

    by » 11 years ago

    I am replacing all the fuel lines, including these, for 2 reasons: it looks like the original lines are still installed (4-5 yrs old now), and second because I am switching to ethanol based gas and I am installing ethanol resistant fuel lines.
      
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  • Re: Bing 54 fuel lines

    by » 11 years ago

    Just watched some of the videos. They are done really well, I was impressed.

    The vent lines on the carbs - are they stock items that you have to order or do you just use the right size fuel line and punch the hole at the bottom yourself?

    The Wacker P12 thermal paste is expensive. I found it online for $40.75. Can it be found cheaper?
      
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  • Re: Bing 54 fuel lines

    by » 11 years ago

    Mike,

    You can make your own vent lines. The tubing is the same size used on the primer system. I think its 1/8" I.D.

    I use a small drill bit in a dremel tool to drill the holes. A small heated nail or wire will work also. I just make two holes at right angles to each other about 1/8" apart. Install so one hole is on the bottom of the loop.

    You can buy thermal heat paste at Radio Shack. It is identical in ingredients and thermal transfer properties as the Wacker.

    Funny thing is that neither the Wacker or the RadioShack product are made for spark plugs. They are both made for bonding heat sinks to electronic equipment. The Wacker can be found in tiny tubes that are good for several plug changes and it's cheaper than forty bucks. The RadioShack comes in the small tube also and is about two bucks and will do several plug changes. I use the RadioShack because it's readily available.

    Both products are basically zinc oxide with a little silver in a dielectric grease base.

    Bill.
      
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  • Re: Bing 54 fuel lines

    by » 11 years ago

    Mike,

    Let me clarify the holes in the vent line.

    Drill all the way through the tubing. You will drill twice but actually end up with four holes. Just drill through, move over an eighth inch or so and drill through again at right angles to the first two holes.

    Bill.
      
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