I ran across this site from a friend with a VW drag beetle. Very intresting read. Long time ago, I remember a guy out near Orlando at a strip called SpeedWorld if it still exists who had a turbine drag axle like the one in the article on a roadrunner.

Happy reading
http://iowahawk.typepad.com/bolus/20...real-acme.html

 

 

^ I always thought that was a cool setup those vet-guys get. I suppose that would be possible on the evo too, except we might lack the power to spin the turbos that far back in the exhaust stream. It's pretty obvious that the vette has "slightly" higher low end torque!

 

I've thought this through with the help of others is another thread. I think it could be done with dual WGs on a stock turbo in front and a big one in the rear. Although that is not what the poster is talking about. That is a perhaps one of the greatest car articles I have ever read! Now there were some innovative guys. Good find

 

"rocket-powered rockets" so who makes forged axles for the evo? Its great that a vw beetle blasted a 9.3 now thats movin!

 

I like the idea of different boost methods, if people never tried new things we would never know what works. The article I thought was a good read so I thought I would share it.

EvoTech, I suppose your talking about a twin-t setup in series? Where once the stock turbo's w/g opens it would dump to the turbo in the rear? That is a pretty good idea, but I think it would suffer from 2 issues. parasitic draw from the stock (or primary) turbo as well as the lag-distance from the turbo in the rear. It would be more efficient to have the stock turbo dump right to the secondary turbo (sort of like the TT supra setup). You would also have to think that with that large a length of piping there is more colume to fill before positive pressure is achieved also contributing to lag on top of the lag from spooling. Intercooler-pipe related lag...

I have thought about a supercharger and a 35-42r. You wouldnt need anything too big, the S/C would only need to produce about 10PSI. I would think something of a non-screw would work. Those smaller turbo with a pulley ones perhaps,

 

Jameson,

Since you seem interested in innovative and unique approaches, here is a link to my thread on the TT idea. https://www.evolutionm.net/forums/sh...d.php?t=317044 The supercharger idea has been done as I am sure you know. Very complicated and ubber expensive. I would not be interested in 2 turbo's under the hood. My goal would be to build a no sacrifice car that retains PS,AC, stock spoolup and 700+ hp potential with minimal costs. The rear mounted tubo is more efficient than you may think. Take a look at the vette kits and you will see what I mean. I say this not becasue it will spool fast, but becasue while you are waiting for it to spool, the front turbo is already generating boost. The long return pipe also has an advantage with the advantage. It will disipate a good amount of heat along it's length. I plan on giving it a try to a holset turbo returning into the FMIC with an end tank with twin inlets and a check valve of sorts to prevent reversion. Please feel free to chime in with any ideas that you have in my thread. I am looking for suggestions.

 

I can see the advantage of heat dissipation due to the long return(coldside) pipe. However, by the same token, the dissipation of heat would occur along the long tube which feeds the secondary turbine, cooling the hot side gases, thus, diminishing exhaust energy wouldn't it?


EDIT: I am not trying to be argumentative. Maybe I am just not visualizing this setup properly.