quote:Originally posted by Husker:
This doesn't look very efficient to me. Can someone explain the theory behind this setup.
A supercharger can be set up to either blow through a carburetor or suck through it.
In the case of sucking through it, the carb would be on the intake side of the supercharger and would blow into the intake manifold.
The Paxton superchargers used on the Shelby GT350's blow through the carb. In order to do that you need to put the carb into an airtight box (like this set up) and blow into the box.
The problem with that is you have limitations as to how much you can pressurize the carb.
First off the floats need to be solid so they don't get crushed under the pressure, second, the fuel pressure needs to be higher then the boost of the supercharger.
My Audi TT is pressurizing the induction to a top of 27 psi. That's a lot of boost. I've seen a sb Chevy at 3 atmospheres which is roughly 36 psi. My Audi has 40psi of fuel pressure which is about normal for a fuel injected car anyway.
I don't think that I could make a carb withstand that kind of boost though and certainly just with those hose ports going through that air box, it isn't going to be tight enough to hold the boost.
That kind of boost is very hard on the driveline as well. It hits it like a hammer. A 250 or 300 hp hammer. That tends to snap forged steel components in half, but I digress.
I don't understand what is going on with this Pantera since it only needs one turbo and certainly it isn't running 75psi of boost. That ain't happening.
Plus even if it does, that air box will blow up. Kabluie! Bam!.
It would also snap the block in half with one throttle blip.
Anyway, it would be better to suck through the carb. Much better. Much safer too and it only needs one turbo.
...oh, you need a computer to handle the ignition advance with this setup, and it isn't simple because it needs to know what to do when the engine is not under boost and when it is AND how much.
I would have used a Paxton cast air box and stayed away from the Home Depot diamond plate top but that's just my taste.