Holley Projection 4Di - replica?? Recipe??

CSH-HQ nacelp at jvlnet.com
Tue Oct 26 01:11:23 GMT 1999


with even a moderate amount of boost your add heat and better vaporization,
do distributiion might inprove with the turbo.
Grumpy

>>  Why "not" pressurize the inlet of a TBI?  Other than leakage and pressure
>>  equalization issues, does he list any other serious obstacles or
>>  shortcomings?  Please contact me off list if this is unsuitable discussion
>>  topic for the group.
>
>Hi Walt,
>Both TBI & carbs present fuel distibution problems that
>don't exist in "one injector per cylinder" dry manifold applications.
>Wet manifolds are full opportunities for fuel to fall out of suspension,
>or situations where a difference in a porting can cause big differences
>in fuel distribution, while still maintaining the same air flow volumes
>accross all of the cylinders.  Mixture streams below a carb or TBI 
>at high flow, are not uniform in  A/F ratio.   These problems worsen
>with positive manifold pressures.   Now, with all of that said, if you
>are considering a TBI setup that employs "one injector per cylinder", 
>that, effectively is a port injection setup, and little of the above applies.
>What ever you go with, please keep us posted..
>MIke V
>




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