Quad nozzles anyone?

[novi2000]

Any luck with the Cobras? Everyone on the Cobra sites says that Alky doesn't work on those cars, no cooling effect. That set-up you posted looks great.

To add to Julio's answer, the reason why Cobra's have limited success at best is because the roots / twin screw type blowers absorb the cooling effect of the alky and IAT2 temps remain approximately the same as using no alky.

I originally had my PAC on my TPI IROC-Z with an ProCharger. This was a simple single nozzle setup and worked well. I then nixed the ProCharger and went with a twin-turbo setup but ended up selling the car before even making one pass with it. I then installed the PAC on my Whippled '05 Mustang GT (pre-TB) and saw no cooling effect. Once I had an opportunity to pull the lower intake off my '08 GT500, I realized how "convoluted" the air stream is and it became apparent that even a twin-nozzle setup after the intercooler would not have optimum results. So I decided to think out of the box and go with four nozzles for a "fogging" effect.

The air temp on my IROC-Z with a centrifugal blower and a single nozzle would drop below ambient. My four-nozzle setup does not have this effect, however the temperature drop is significant. My IAT2 temps are now about ten degrees above ambient with 14-psig boost. Pre-intercooler air temps are well over 200 degrees. I have gauges to prove this. The OEM roots style blower is infamous for producing massive amounts of heat. So I'd say my design works well.....

Willie

Do the roots style blowers IAT benefit from adding more nozzles, so lets say instead of 2 M15 nozzles you add 3 or 4 M15s?

 

[Razor]

Typically what is done is shot for nozzles to match airflow=HP. So putting for example 30 GPH worth of nozzles on a 300 HP motor makes a mess.

On the above pixs we did 4 M5's=20 GPH. With a pump that produces over 150 PSI on that sizing, should support up to 800-900 RWHP no problem and keep the charge temp down.

On LS1's I usually go 25 GPH for 900, 30 GPH for 1000+ RWHP.

Here's a thread at over 900 RWHP on 91 octane

SudburyC5, goes SD, Flip Drive and gets 922 RWHP on 91 octane and meth!!!!!! - Corvette Forum