Just as the topic states, is anyone using Variable Nozzle Turbines/Variable Geometry Turbos on their trucks or cars?
Only production vehicle that I know of that uses it is the 2006 Porsche 911 Turbo. Was wondering what people's opinions and reactions are to them if anyone does run them.

 

the 6.0 PSD diesels (and lots of modern deisels) use them. Unless you had a good way to control the vanes, they would be a waste of time for the aftermarket. The PSD version uses oil pressure controlled by a solenoid to move it's vanes.

 

the duramaxes have them.

i dont know of anybody that has one and can control it. i have heard of a couple of guys slapping duramax/powerstroke/cummins turbos on motors but they cant control the vanes

 

VW TDI Diesels have them. And they are vacum operated via a solenoid.

 

Yeah I know the Diesels are running them but more curious about gas engines. Only production one I know if is the 911 turbo. How hard or what is involved with fabbing up a vacuum operated solenoid to work with a gasoline engine?

 

There was a guy at theturboforums that rigged a PSD turbo onto a 5.0, and made a manual controller for the vanes- I cant seem to find the thread though.

 

Would it be worth it you think?


Also I thought the Ford power stroke Diesels used two turbo's in series to deal with the low end and high end boost. Are they also VGT's?

 

IMO, I don't think the aftermarket has come to embrace variable geometry turbo's just yet... with the fact that increased management complexity, and the costs associated with it, will yield $/Hp results that will be favorable enough to support selling the technology and making a profit. Just a thought

Bill

 

I pretty sure pontiac solstice uses it and so does the saturn. Stays small to spool quick then it opens up.

 

International uses them too. (maker of the power Jokes) The I6 internationals, used a stepper motor to control the vane, which for us would be the easiest to set-up for our use. I thought about getting few, but cost (650 for just the motor) and the fact it is one part that fails more than any other part on the engine....