super chargers?

[Giddyup5.9]

Originally Posted by aer212

Say someone set up this supercharger and twin turbo system, how do you bypass the supercharger? Say you have it set at 2lbs at idle and it will max out at 3000 rpm at 25lbs. How does the air from the turbo setup which is gonna be anywhere from 60-100lbs get to the engine? Keep in mind that I know it can be done, but I don't know how. There is a couple guys with duramax on compd that have this setup.

Your thinking about it backwards. Think about psi vs volume

You can have 30,000psi in a 1/4inch line and yeah its alot of psi but its volume that your lacking.

So suppose your supercharger needs X amount of volume to operate efficiantly at X psi. This isnt a regular supercharger becuase most superchargers draw atmospheric pressure wich is 14.7 at sealevel and compress that into a given volume. So In your case the twin turbos will supply the volume and the supercharger will take that volume and simply boost the psi of it shrinking the volume but upping the psi.

Here is how it works

V2 = V1*P1*T2/(P2*T1)

V1=VOLUME 1, P1=PRESSURE1,T1=460 RANKINE+TEMP1
V2= X VOLUME, P2=ATMOSPHERIC PSI (14.7 SEALEVEL + YOUR PSI) AND T2=460 RANKINE + TEMP2.

Example:
Say we want to figure out how many cubic feet is 100cuft at 100 psig @60degrees (this is what yor turbos have sucked in not realisticly numberwise) if you increase the pressure to 200 psig and 120degrees (this is your supercharger output)

v2=100*114.7*580/(214.7*520) = 59.58scuft (standard cubic ft

you go from 100 cubic feet @ 100 psi @ 60degrees to a compressed 59.58 cubic ft @ 200 psi and 120degrees...
In order for the volume to shrink you need to increase psi wich is why you would run a higher psi from the turbos to feed the superchargers demand for volume

[98andahalf]

Originally Posted by aer212

Say someone set up this supercharger and twin turbo system, how do you bypass the supercharger? Say you have it set at 2lbs at idle and it will max out at 3000 rpm at 25lbs. How does the air from the turbo setup which is gonna be anywhere from 60-100lbs get to the engine? Keep in mind that I know it can be done, but I don't know how. There is a couple guys with duramax on compd that have this setup.

well, think of the supercharger like the small wastegated turbo on a set of twins. for instance, you could be seeing 70psi at the manifold, but the small turbo is spinning at the same rpm as it would be on its wastegate pressure, say 25psi. The bottom/big turbo first compresses the air and creates a certain pressure, which in turn is compressed even more in the smaller turbo to create a higher pressure.
so say your supercharges also makes 25psi at max rpm/boost level by itself. Running a large turbo being fed directly in the supercharger would act similar to compound turbos.
Also, water to air intercoolers are much more efficient than air to air intercoolers and are more commonly used in supercharger applications where the intercooler is sitting underneath the supercharger on the manifold.

[Cummin_Get_Some]

Heres a twin turbo/ supercharger setup.....First startup with compound turbos/roots duramax- Video

[Andrew Allen]

i worked for a company last summer that prototyped a supercharger for the Duraturds... as an OEM product, not aftermarket!!! they did some testing on the truck and in 4 wheel drive on dry pavement, matted it and spun all 4 at the snap of a finger!!! it was sick! no lag and lots of power, but id still rather have a turbo or 2 stuffed up under there ;-)

[Cummin_Get_Some]

Originally Posted by Andrew Allen

i worked for a company last summer that prototyped a supercharger for the Duramax... as an OEM product, not aftermarket!!! they did some testing on the truck and in 4 wheel drive on dry pavement, matted it and spun all 4 at the snap of a finger!!! it was sick! no lag and lots of power, but id still rather have a turbo or 2 stuffed up under there ;-)

I would love to have a built dmax with a blower

I like my cummins now that I have one but I still love the dmaxs.

[Andrew Allen]

Originally Posted by 6speedduramax

I would love to have a built dmax with a blower

I like my cummins now that I have one but I still love the dmaxs.

yeah, the one they built was for OEM to sell to duramax to put on factory instead of the VGT's they got now, i think they are still in the testing phase though, testing for reliability and what not but they were pushing 4 times amphispheoric pressure with it i believe!!

[chevy791979]

Originally Posted by rocket

The right twins setup will get you the same thing. A supercharger would be expensive and pointless (IMO)....let's see, you'd need bypasses, clutches, a whole lot of extra tubing, etc

WITH A SUPERCHARGER PULLEIED RIGHT YOU COULD ACTUALLY MAKE BOOST AT IDLE. AND HAVE THE PULLEY ON A PRESSURE SWITCH AND CLUTCH TO DIENGAGE AT LIKE 15 PSI OND THE CHARGER/S ARE LIT. IF SOMEONE COULD DO IT IT WOULD KICKA SS.

[rufushusky]

Originally Posted by twhetten

OK...

[Cummin_Get_Some]

Thats pretty sweet...

[twhetten]

Originally Posted by rufushusky

OK...

And from the tubing on the other side it looks like it still has a turbo.

[crazycatman]

that is sick!

I'm done with my quest to put a Kenny Belle on a mustang. Time to start working on supercharging a 12 v to put in the old Highboy!

I couldn't figure out how to copy the direct link but, you understand my inspiration.

check this out on You Tube:Bad Mustang Cobra with Kenne Bell Supercharger

[JDiepstra]

Originally Posted by rufushusky

OK...

Cool picture and not trying to be a tool but man looks like they really had to cram that intake elbow in there to get it to fit. Looks like major restriction.