What CFM do 24 valves flow before boost??

No Seeum, if that spread sheet is for the procharger, you could simulate it receiving boosted turbocharged air by adjusting the inch HG to whatever boost number you are running, adjusting ambient temp to theoretical charge air cooler outlet temp of 140*F and turing IC efficiency to 0% since it gets zero cooling after the supercharger. Inch HG = 2 times psi + 29 in hg.

Or you might be able to put a negative number in for filter drop psi.
 
Jflagg,

Yes, that is the whole idea behind going a turbo and supercharger is to be able to add street manners to a turbo that previously would be too much of a hassle for daily driving. Our little 5.9 will only make so much exhaust, so we are limited to how big we can go and then it is a waiting game to see when it will light up. With a supercharger forcing more air in at idle we are getting more exhaust and tricking the turbo into thinking that our engine is bigger than what it actually is. Also if one got rid of the clutch fan and AC, there would be no extra parasitic power loss and more room for the extra pulleys and belt.
 
JFlagg said:
And to add to that, (for us dumber folks)it would allow the use of a much larger than normal Primary (big) turbo. Also could make some previously un-road friendly large singles actually streetable. The mechanics are WAY over my head, but I think I'm fairly able to picture what you guys are wanting to do....



I think it would be sweet....turbo whistle AND that familiar blower whine. :bow:
Click to expand...

Yeah, that big turbo down below now gets all that exhaust gas enthalpy vice just what the secondary is passing.

Jim
 
Big Blue24 said:
No Seeum, if that spread sheet is for the procharger, you could simulate it receiving boosted turbocharged air by adjusting the inch HG to whatever boost number you are running, adjusting ambient temp to theoretical charge air cooler outlet temp of 140*F and turing IC efficiency to 0% since it gets zero cooling after the supercharger. Inch HG = 2 times psi + 29 in hg.

Or you might be able to put a negative number in for filter drop psi.
Click to expand...

The spread sheet does not really care what kind of compressor it is, what is important is the entry and exit pressures, the entry temperature and the CE that it is running at. Mostly I find it easier to think of compounds as a single compressor running at a better overall CE. But I have goofed aound with compounds if I know the cold pipe pressure.

Jim
 
CanadianCarGuy said:
Jflagg,

Also if one got rid of the clutch fan and AC, there would be no extra parasitic power loss and more room for the extra pulleys and belt.
Click to expand...

That blower is going to use quite a bit of Hp at WOT, might surprise you. But like you say, at this point it is a build and try to really find out the net effect.

Good Luck and report back;
Jim
 
:ft:
schargedcummins.jpg
 
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