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 Post Posted: Wed Oct 17, 2012 12:10 pm 
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Location: Elizabethtown, KY
I know that is dangerous. :- =;

We talked about Barametric pressure in another thread. It was stated that atmosphereic pressure pushes the fuel through the jets to the venturies. Got it. Now I can see that with a full bowl at an idle.

Running down the track the float is open to refill the bowl as fast as you are using it. Does the flow of the fuel from the N/S interfere or enhance the fuel going through the jets to the venturies?

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 Post Posted: Sun Oct 28, 2012 1:33 pm 
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I was just wondering if it helped push the fuel through the jet. Yeah you answered it. Some times these voices in my head need answers. LOL

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 Post Posted: Mon Oct 29, 2012 5:25 am 
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Location: Montgomery, Alabama
That great big hole in the bowl is a vent so pressure is neutral in the bowl.
However,
Some of us have found out the hard way that bowl pressure can go negative if the roof of the hood is too close to the top of the carb. [-( [-( ](*,) ](*,)

Notice the tall scoop below?


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 Post Posted: Mon Oct 29, 2012 8:42 am 
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That's interesting Scott. :-k Thanks.

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 Post Posted: Mon Oct 29, 2012 4:41 pm 
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Location: Melbourne, Australia
Scott Smith wrote:
That great big hole in the bowl is a vent so pressure is neutral in the bowl.
However,
Some of us have found out the hard way that bowl pressure can go negative if the roof of the hood is too close to the top of the carb. [-( [-( ](*,) ](*,)

Notice the tall scoop below?


What do you call too close Scott?


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 Post Posted: Mon Oct 29, 2012 6:59 pm 
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Location: Montgomery, Alabama
SGDCXCVI wrote:

What do you call too close Scott?


We were at 2 to 2 1/2" and no matter what we did with air bleeds, jets, carbs, the further down track we got the leaner it got.
Put a pair of 90 degree plug boots on it facing forward and it shut off when I lifted at the stripe from being so fat. Stuck a tube between the boots with a hols drilled in it and boom! flat fuel curve!


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