[Spridgets] Cross Flow Quesiton - Turbo Question

[WeslakeMonza1330 at aol.com]

With a carb the amount of fuel dumped in is determined by the jets or  
needles so that even given carb at any given engine speed (air flow) can be made 
 to run rich. Same thing with fuel injection if it's not set correctly, 
injectors  too big etc.
 
A lot of factors limit how much AIR can be drawn into the engine  
(volumetric efficiency??) and given you can always add more fuel to the air than  it 
needs (air/fuel mixture is too rich) it is the overall breathing efficiency  
of the engine that limits power.  The engine sucks in as much air as it is  
capable of whether carb or injection.
 
What a turbo or super charger does is FORCE FEED AIR INTO THE ENGINE.   The 
engine doesn't suck air rather it has air pumped into it, sometimes at  
pressure (tech difference between various types of supercharger and turbo  
charging).
 
More air = more fuel though it's still possible to get a super or turbo  
charged engine to run too rich.  It's also possible to have to little fuel  
with just a carb (or injection) and super or turbo charging.
 
If the turbo or supercharger just put more air into the engine for any  
given amount of fuel the engine would simply run lean and make no more power  
than without a super or turbo charger.
 
Weslake-Monza 1330
 
In a message dated 05/05/2010 22:22:24 GMT Daylight Time,  
eric.t.cartman at gmail.com writes:

With a  carb, the amount of fuel dumped in is determined by the speed of the
air  flow.  So as more CFM is fed in to the venturis, more gas is pulled  in
to the cylinder. With a turbo or supercharger, it uses the same amount  of
fuel as non-boost system, it just crams a lot more air in so that you  get
more energy out of the fuel at combustion time.