<b>nitrous releases oxygen as it breaks down. It requires more fuel, not more air. Add nitrous without adding fuel and you get this godawful, piston burning, valve melting lean condition. Adding nitrous and more oxygen only makes that worse. </b>
I was thinking of a real lean mixture of nitrous to somewhat bolster the compressed air, I'm not an expert on either nitrous or blown engines. But for some odd reason this thing appeals to me in a very odd way.
<b>First, if you pressurize the manifold under the carb, what keeps the pressure from blowing back out the carb? Any compressed air system needs to pressurize the top of the carb, not the bottom, otherwise the carb is just a big hole that vents to the atmosphere.</b>
Hrmm... You'd almost have to have a pressurized box that could seal the carb via a switch and be able to open up again after the boost. Again, I'm not an expert on blown engines but I'm thinking that you could adapt some type of intake to it. I'm going to sit down after work a bit and try and flesh this out (still reading How to select and install turbo-chargers
by Hugh MacInnes).
It probably isn't going to be possible (without a lot of hassle) or cost effective (turbo's can be found for fairly low prices nowadays, vs. a high pressure tank/compressor... Good Air compressor setups aren't cheap...)
Anyways, thanks for setting a charge happy inline guy straight.