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Racing Fuel Systems • View topic - Downleg Annular

Racing Fuel Systems

Forum for carb guys.

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Downleg Annular

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Re: Downleg Annular

Postby Right hand drive » Mon Jan 03, 2022 8:02 pm

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Re: Downleg Annular

Postby Right hand drive » Tue Jan 04, 2022 2:10 am

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Re: Downleg Annular

Postby rgalajda » Tue Jan 04, 2022 10:28 am

Do you have the inside diameter of the original booster? And stepped or not stepped.
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Re: Downleg Annular

Postby Right hand drive » Tue Jan 04, 2022 11:51 am

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Re: Downleg Annular

Postby mike laws » Tue Jan 04, 2022 3:01 pm

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Re: Downleg Annular

Postby Right hand drive » Tue Jan 04, 2022 7:44 pm

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Re: Downleg Annular

Postby mike laws » Tue Jan 04, 2022 9:41 pm

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Re: Downleg Annular

Postby Right hand drive » Wed Jan 05, 2022 12:17 am

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Re: Downleg Annular

Postby rgalajda » Wed Jan 05, 2022 1:12 pm

Just some thoughts. Being these are mini annulars , with a smaller inside diameter than even your original down leg booster, I would not think the signal to be amplified. Therefor the startup of the mains not to change. Signal amplification relies on more air travelling thru the booster. But being it is annular , atomization should still improve. Which is usually what we are looking for with larger venturi carbs and non heated intake manifolds ( no crossover heat ) and air gap intakes because they run cooler. ( heated intake manifolds create more fuel atomization )
But then again there is more to booster design than inside and outside diameter, so what do i know?
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Re: Downleg Annular

Postby mike laws » Wed Jan 05, 2022 2:53 pm

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