Ok, im sorry if im the only one that has never seen this before, but how is this possible:

 

It has been done. Why can it not be done?? The only problem is after a while the SC becomes the bottle neck

 

I dont understand whats so hard to believe ?

 

Im not douting it. I think its a good idea if you can get the tune down good. Just i rember one guy did it on a GSR motor and it made good power down low but at higher boost the SC was beoming a bottle neck he said

 

Its not hard to believe, i've just never seen it before

 

HKS used to sell a turbo kit for supercharged first gen MR2's.

 

That's rmcdaniels or something like that I believe

 

i think its a very good idea. supercharger takes care of the low end power...then in the higher rpms the turbo takes over. this way the engine has a better overall powerband. i think i read in some magazine once that a guy had rigged up a set-up like this where after a certain rpm was reached, the supercharger cut-off completely and allowed the turbo to do all the work.

how does the SC become the bottle-neck? is it because of the piping running into the SC, or is it the SC itself that causes the restriction?

 

i saw an 05 stang gt turbo/procharged adding only 200whp for 7k its f'n worthles loocked and sounded cool do

 

yeah pretty much when the turbo spools higher sc will just get in the way pretty much like twin turbos

 

I think rmc had a diverter valve that totally bypassed the SC so it wouldnt be a bottle neck.

 

i wonder how much heat that thing generates...

 

Well if your dumb enough to jam heated boosted air into a SC i guess it would be very much heated. That why people use the bypasses.

 

pick one the turbo is forcing to much air to the sc to handle. So i would go turbo. Unless there is a bypass but that would be alot of piping

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by daveb91 &raquo;</TD></TR><TR><TD CLASS="quote">Well if your dumb enough to jam heated boosted air into a SC i guess it would be very much heated. That why people use the bypasses.</TD></TR></TABLE>

ROFL.. english please.

 

Im not sure who it was HKS or GREDDY back in the day ill find the pic. It was on a 2JZ they had a big turbo and a small SC on the left side of the motor and under low RPM the clutch and gate valve would open up and force air to the turbos to help spool then at a certin rpm the valve would close and the SC clutch would turn off and the the turbos took over. They claimed over 100hp at the lower ends

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JoePSI &raquo;</TD></TR><TR><TD CLASS="quote">

ROFL.. english please.</TD></TR></TABLE>

Bypass the SC at a certain rpm dont put boosted air into it.

 

it bypasses from boost pressure after the turbo spools up, not rpm's. its possible to do by rpm, but after the turbo spools you don't need the supercharger.

 

The only problem with this setup, is the cost. Is it possible to do it cheap? Only if you already have both kits and know how to fabricate. To do it the right way so they both work flawlessly together is a big learning curve. In theory this setup is perfect for the street because where the supercharger drops off in power the turbo comes on hard. clemsonhatch and rmcdaniels are the guys to talk to on here about this setup.

btw, the supercharger is not a bottle neck at all because after a designated rpm or psi, the turbo air is going directly into the intake manifold after the supercharger, making it turbo power all the way to redline. The supercharger only needs 6psi to work well, and it'll never be overdriven.

 

if you modd the JRSC's components, or fab up a new IM for it, you can make the bypass valve in it bigger, helps alot with the bottleneck.

 

That's my old setup that we put on a friend of mine's hatch for autocross. Here's the setup on my old coupe:

https://honda-tech.com/zerothread?id=1293497

The turbo is actually the bottleneck on that setup, he really needs a bigger one.

 

Ah the good old twin charger set up. Ridiculously inefficient if you ask me.

A couple guys around here have toyed with them. All of them failed to produce any kind of worth while results.

 

yeah its been done, is it worth the hassle and fabbing when you can go get a ball bearing turbo that is properly sized for the application and sacrifice a little lag.

 

And now comes the part where all the experts that have never done it chime in with their uninformed and incorrect opinions. Gotta love Honda-Tech!

 

Heres how you do it properly Click on english on the top left of the screen
http://www.hilmersson-racing.com/

http://www.hilmersson-racing.c...g.mpg

http://www.hilmersson-racing.c...a.mpg

http://www.hilmersson-racing.c...5.mpg

http://www.hilmersson-racing.c...1.mpg