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Thread: triple Weber 40DCOE 151 Float Level?

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    Nova Scotia,Canada,Earth Blue's Avatar
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    Default triple Weber 40DCOE 151 Float Level?

    I just ran it tonight with 29mm fuel level (measured from top of main well). Is 25mm down a typical level for an L24? (i.e. my fuel is 4mm too low)?

    Thanks
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    Supporting Member Zedyone_kenobi's Avatar
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    I bought KF's float level checking tool. It has a line that is 25mm up from either side.
    You probably already know all about this, heck you are probably the one who told me about it.

    I do not think which L series would have any baring on what the level should be, the CARBS dictate that you should have 25mm. If you are 29mm from the top of the surface where the main Emulsion tube screws in you are 4mm too low, which would make your transition really bad to the main circuit. You are making the engine work extra hard to pull the liquid up the Emulsion Tube.

    Adjusting the floats was the biggest thing I ever did to my Webers in their brief time on my L24. I also went down from the 170 Air Corrector that came with my 151 to 160, which also helped tremendously in the mixture upper RPM in the higher gears.
    1971 240Z HLS30-38691
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    Nova Scotia,Canada,Earth Blue's Avatar
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    Great! Thanks. I will try 25mm tonight.

    For measuring fuel depth, the wire end of a $1 plastic vernier caliper works great. I can easily see it touch or not touch the fuel surface as it deforms the well meniscus and reflects light differently. My accuracy is less than 0.5mm and the plastic end of the tool fits squarely across the top of the well

    If I had to do more of these, I would just buy 3 calipers and lock at 25.5mm, 25.0mm and 24.5mm for go/no-go testing.

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    There is scarcely anything in the world that some man cannot make a little worse, and sell a little more cheaply.
    The person who buys on price alone is this man's lawful prey.


    John Ruskin (1819 - 1900)



    ZCars in Eastern Canada seaport ready for shipment to Europe

    http://ZSportCanada.com


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    Supporting Member Zedyone_kenobi's Avatar
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    how did it go Blue?
    1971 240Z HLS30-38691
    93.9% done and getting better every day
    Now with 100% more DATSUN SPIRIT L28 Power
    1968 Datsun 2000 SRL311-03416

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    Nova Scotia,Canada,Earth Blue's Avatar
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    See your weber carb post for details

    For this thread's completion: I set the three carbs to 24.5mm 24.5mm and 25.0mm. It eliminated the transition bog!!!

    Thanks!
    Last edited by Blue; 08-05-2012 at 08:24 PM.
    There is scarcely anything in the world that some man cannot make a little worse, and sell a little more cheaply.
    The person who buys on price alone is this man's lawful prey.


    John Ruskin (1819 - 1900)



    ZCars in Eastern Canada seaport ready for shipment to Europe

    http://ZSportCanada.com


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