Twin Charge Possible???

azbigmike · 01-06-2004, 12:24 AM

Some of you don't know this term but wondering sense I see there are turbo kits and supercharger kits, is there a possiblilty of running a twin charger kit (using both supercharger and turbocharger together). I know the first gen MR-2 was able to be twin charged, wondering is it possible or has it been done. I would say the only major problem is the fact that there isn't any real space to use. Just think, using a sc for instant low end power and have more power with the turbo after it spools up. If you want to flame me go right ahead. Don't care. I am asking out of the persuit of knowledge or give some crazy tuners an idea. The way I would put it together would be like so:

Have an intercooler with two inlets (one from the turbo and one from the turbo) and one outlet leading into the throttle body. Have them all controlled by a standalone like AEM EMS. Have the sc run full time to help spool the turbo and have the turbo run a certain boost level to have greater top end power without sacrificing just having a turbo and have lag. Of course you will need supporting mods, EI fuel, injectors, plugs, wires, fuel pump, tranny and drivetran upgrades, etc.......

MattG · 01-07-2004, 02:05 AM

With the ball bearing turbos that are available now that are able to spool up from low rpms (eg 2500-3000rpm). In good turbocharged cars there is virtually no lag, trying to stick a monster size turbo on a small engine will create lag.

The comptech and vortech supercharger kits that are avaible for the 2000 at the moment are centrifugal superchargers and give a linear boost level that is directly related to the engine rpm (eg boost goes up as revs go up).
Using these superchargers you will not be getting a real lot of boost at low rpms.

Anything is usually possible if you have enough money. Essentially the difficulty is designing the system to get the supercharger and turbo to work together and cut-in/out. It would be easiest to copy the design of similar systems such as the MR2 twincharger.

I have not heard much about the idea, but the one application I saw needed what was essentially a gate to switch between the two.
When the turbo is not providing as much boost as the supercharger, the gate would close off the turbo side. When the supercharger was providing less boost, it would close off the supercharger side.

I think with the advancements in turbocharger designs over the last few years, it would be a lot easier to get the same results by using a small ball-bearing turbocharger.

M@

01-06-2004, 12:24 AM	#1 (permalink)
azbigmike Junior Member Join Date: Jan 2004 Location: Tucson Posts: 1	Twin Charge Possible??? Some of you don't know this term but wondering sense I see there are turbo kits and supercharger kits, is there a possiblilty of running a twin charger kit (using both supercharger and turbocharger together). I know the first gen MR-2 was able to be twin charged, wondering is it possible or has it been done. I would say the only major problem is the fact that there isn't any real space to use. Just think, using a sc for instant low end power and have more power with the turbo after it spools up. If you want to flame me go right ahead. Don't care. I am asking out of the persuit of knowledge or give some crazy tuners an idea. The way I would put it together would be like so: Have an intercooler with two inlets (one from the turbo and one from the turbo) and one outlet leading into the throttle body. Have them all controlled by a standalone like AEM EMS. Have the sc run full time to help spool the turbo and have the turbo run a certain boost level to have greater top end power without sacrificing just having a turbo and have lag. Of course you will need supporting mods, EI fuel, injectors, plugs, wires, fuel pump, tranny and drivetran upgrades, etc.......

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01-07-2004, 02:05 AM	#2 (permalink)
MattG Senior Member Join Date: Sep 2003 Location: Sydney, Australia Posts: 363	With the ball bearing turbos that are available now that are able to spool up from low rpms (eg 2500-3000rpm). In good turbocharged cars there is virtually no lag, trying to stick a monster size turbo on a small engine will create lag. The comptech and vortech supercharger kits that are avaible for the 2000 at the moment are centrifugal superchargers and give a linear boost level that is directly related to the engine rpm (eg boost goes up as revs go up). Using these superchargers you will not be getting a real lot of boost at low rpms. Anything is usually possible if you have enough money. Essentially the difficulty is designing the system to get the supercharger and turbo to work together and cut-in/out. It would be easiest to copy the design of similar systems such as the MR2 twincharger. I have not heard much about the idea, but the one application I saw needed what was essentially a gate to switch between the two. When the turbo is not providing as much boost as the supercharger, the gate would close off the turbo side. When the supercharger was providing less boost, it would close off the supercharger side. I think with the advancements in turbocharger designs over the last few years, it would be a lot easier to get the same results by using a small ball-bearing turbocharger. M@