Originally Posted by Boofster,Aug 8 2009, 11:42 AM

This sounds great but I was thinking, does two superchargers give you more PSI? I am leaning towards no.

The Koenigsegg uses two because it's a V8 and there needs to be one on each side.



Now if you had a C30 and a C38, maybe you'd get the low end and top end working together.

Originally Posted by chairmnofthboard,Aug 14 2009, 05:50 PM

More CFM.

Originally Posted by HORSEPOWER,Aug 10 2009, 02:51 PM

Mine were both intercooled and Methonal cooled. IC between blowers and meth after second one. It was experimental, done on behalf of Rotrex. You are very right about the heat. Unfortunately it wasn't tested to a final conclusion. But I have a friend in Europe who is running like this with relatively low boost per stage and seeing 2 bar guage and very good power on his S2k. My single stage ic kit is only seeing a rise in temp by 10 deg under hard full bore throttle so if the first stage is under control the second stage shouldn't be to difficult.
Regarding boost through throttle body etc, there are some high boost turbo's around running big power through std throttle and manifold. From my work so far I know that there is a bias in flow to different cylinders with the std manifold and ideally it needs replacing, which I intend to do.
It's great to experiment and I wish everyone success.

Originally Posted by juntuned,Aug 10 2009, 06:38 PM

Very good point. I think with the volume of air in the manifold a custom plenum manifold that equally disperses air into all four cylinders will be useful. I will have Larry at ENDYN fab the manifold, he currently has altered my manifold already but with the addition of the second blower the plenum will need to be enlarged. We will see what he says, I know he recommends an enlarged plenum for 89mm bore and oversized valves. Im not sure about 87 and standard valves. Ideally it would be sick to get the 89mm block to accommodate an increase in flow through the head! That might be the NEXT step. For now I want to get this on a stock bottom without the complication of too many variables.

GMK, I like that idea of equal distance between the FMIC and the blowers. After the brackets are perfected we can then route the IC piping.

As far as the c38 debate, this idea was beat to death months ago back in the snake charmer days. The c38 is in theory too large for either side of the block and not ideal for the s2000 powerband. This isnt my personal opinion im just relaying feedback given to me by others. I think if bigger was better KW would have used 2 c38's on the RSX, and not one of each. After Owning the c30 and witnessing its Low end throttle on demand I dont think I would want to make any sacrifices for top end power!

Originally Posted by GrandMasterKhan,Aug 15 2009, 01:49 PM

Yes i dont understand why exactly the c38 is too big. They say its because of the 2.2 displacement is under the 3.x displacement the c38s are designed for. But seriously who makes a 4cyl which can hold 500whp with a stock block and makes 240hp NA? There are PLENTY of 3.x liter v6s which have similar hp as an s2000. Would the c38 be a match for them just because they have larger displacement?

Honestly i think twin c30s would be SICK, and probably outperform a single c38.

Originally Posted by GrandMasterKhan,Aug 15 2009, 01:49 PM

Yes i dont understand why exactly the c38 is too big. They say its because of the 2.2 displacement is under the 3.x displacement the c38s are designed for. But seriously who makes a 4cyl which can hold 500whp with a stock block and makes 240hp NA? There are PLENTY of 3.x liter v6s which have similar hp as an s2000. Would the c38 be a match for them just because they have larger displacement?

Honestly i think twin c30s would be SICK, and probably outperform a single c38.