Throttle Body Sizing

John Dammeyer johnd at islandnet.com
Thu Jul 25 06:17:42 GMT 1996


At 03:37 PM 24/07/1996 -0400, you wrote:
>While trying to decide on the proper size throttle body for my MGB EFI 
>project, I found the following formula for determining carburetor air flow 
>requirements in "Auto Math Handbook" by John Lawlor:
>
>Well, if you assume that the engine has a VE of about 65% at 6,000 RPM then 
>the throttle body needs to be sized for about 413 CFM.  This is just about 
>what two 1.5" carbs. will pass (steady state) which is what was used on the 
>pre '75 MGB's.  This makes me think that my assumptions are correct.
>


What is VE ?

Thanks,

John.
Pioneers are the ones, face down in the mud,
with arrows in their backs.
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