I've been hearing about this technology for months now, but I never found a good writeup until now, thought I'd share for anyone who's interested. The example given is the 997 911 turbo, apparently the moving vanes allow it to hit full boost at 1500 RPM!

Mentions that the technology was stolen from the aerospace industry, probably from turbofan or turbojet engines.

Hurry up Greddy!!!

http://paultan.org/archives/2006/08/...geometry-work/

 

I believe the Acura RDX also uses this type of tech

 

Hadn't heard about the acura version, found the attached features. Looks like they use one big valve to control total exhaust flow. Man I hope aftermarket companies jump on this bandwagon.

 

the picture you posted IS the acura version

 

The "Acura version" is not variable vane.

 

Hadn't heard about the acura version [BEFORE], found the attached features [AFTER YOU MENTIONED IT]

Could I possibly be that stupid!? Jesus guys.

 

no, but they both do the same thing...

Variable Vane:
"In this cut-through diagram, you can see the direction of exhaust flow when the variable vanes are in an almost closed angle. The narrow passage of which the exhaust gas has to flow through accelerates the exhaust gas towards the turbine blades, making them spin faster. "

The Acura version uses a valve to narrow the passage of the exhaust making the exhaust flow faster. Not exactly the same, but the principle is the same.

 

you'd be surprised

 

Funny, after I posted I was thinking the same thing! There are actually people that stupid, I live around thousands of them!

 

I'm suprised that none of the aftermarket companies that make turbo kits thought of this before. It makes a lot of sense for minimizing lag.

 

From what I've read, sounds like the problem is the actuators. I guess the small moving parts can't handle the heat. That's supposedly what they borrowed from aerospace, some exotic material that can take the heat and still move the vanes precisely.

 

it looks rather expensive...

 

I think GM dabbled in this tech also. I think aero is right. All those little parts had a hard time dealing with the heat and probably the exhaust junk

 

Good point. I guess they would have to use a different kind of material that can handle the heat. That might drive up the price a bit to make it work. It's a great idea though if they can make it work without drastically driving up the price of the kit.

 

Yes I'm using Stupid Street mag as a source but it's a decent link. haha

http://www.superstreetonline.com/tec.../pictures.html