Thread: Newbie with 307 Questions?
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08-24-2009 06:33 PM #13
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- Zephyrhills, Florida, USA
- Car Year, Make, Model: '32 Henway
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Every time I see this statement, it gives me pause, wondering what area of science it came from. I have been in some heated discussions with another member of this board about this statement. According to everything I've learned over the past 50 years, the throttle bore size and venturi size dictate the CFM of a carburetor, not the jetting. The jetting you choose only changes the relationship between the amount of air compared to the amount of fuel that is being pushed into the ports by atmospheric pressure with the intake valve open. A 650 CFM carb is a 650 CFM carb, no matter how you change the ratio of air to fuel by changing the jets.
Originally Posted by 63BoxNova
Last edited by techinspector1; 08-24-2009 at 08:26 PM.
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It would be nice if this up and down crap would cease.
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