<VV> Blow through turbo

[Smitty Smith]

From: FrankCB at aol.com
Subject: Re: Turbocharging using standard 110 carburetors

Since carbs measure in fuel flow based on VOLUME of air flow and are 
grenerally calibrated based on atmospheric pressure air, you'll have to increase the 
jet sizing to allow for increased MASS flow of the compressed air since more 
lbs/hr of air require more lbs/hr of fuel. Also, the fuel pump ain't gonna 
move any fuel when the boost pressure is 8 to 10 psig and the outlet of the 
pump is only 5 psig. So you'll have to figure out how to boost the fuel 
pressure to compensate.
-----------------------------------------------
  Smitty says:  Frank that is one of the simpler problems to deal with if the carb is in a box.  Plumb a fitting into the breather port on top of the fuel pump and run a hose to the box.  The more blower pressure you got the more fuel pressure you get as it is added to the fuel pump spring pressure.