Variable Geometry Turbos for Dodge Cummins

[nickleinonen]

PeterT, is the variable part of the new turbo on the turbine side(exhaust) or the compressor side?? Both have pros and cons just wonder which you went with and why?

variable geometry turbos tinker with the turbine side only... if it is a garrett based charger, it is VNT [think ford 6. 0 psd turbocharger] the holset ones are VGT, with the single sliding collar. the VNT has all the little moving parts inside the turbo... [although i think you can interchange the VGT & VNT name between applications -Variable Geometry Turbo/Variable Nozzle Turbo]



i'd love a VGT/VNT turbocharger on my truck... that with a 2nd gen ats 3 piece manifold...

 

[SClements]

FDavid, I just might take you up on that deal... . I love coneys! I could definitely use a VGT turbo, especially if it's cheaper and less complex than a set of twins. I need to check out your B1 sometime.

Seane

 

[PeterT]

Cryotek,

The variable portion of the turbo is the turbine side. I am not aware of a commercial use of a variable compressor, but I am sure that it has been experimented with. A variable turbine allows you to get good response out of the turbo by tightening down the nozzle that is directing exhaust gas into the turbine wheel, and then to make high levels of boost without generating a huge amount of turbine inlet pressure by opening up the nozzle as airflow increases.



Peter Treydte

Banks Power

 

[Cryotek]

I have seen the variable controls on both sides of turbines outside of the deisel market. On the expander(exhaust) side to get the most out of the gas driving the expander wheel and on the compressor side to change pressure/flow curves. Just wonder if it made it to the diesel market yet. Thaks for the info and I'll be sure to watch extreme 4x4 this weekend. Thanks.

 

[JHight]

PeterT,

Is Banks using a modified version of the current VG turbo that is seen on today’s Cummins engines? If so, are you using the one off the B (5. 9L) or C (8. 3L) series engines and how are you routing the water to the turbo? With those horsepower results I image a modified big boy off the C-series is the one going on the truck and have often wondered about sacrificing the passenger side fender to stuff one in. I know you’ll probably just say “watch the show”, but have some mercy on those of us without cable

 

[DragRacer]

How will the VGT be controlled and actuated? Air or electrically actuated?

 

[PeterT]

JHight,

No, this turbo has nothing in common with variable geometry units that are used on Cummins engines. If you want a comparison, I would have to say that this turbo is most similar to the Duramax LLY turbo. It is not a water cooled center section, so no coolant plumbing is required. I used to be one of those without cable (satellite) so I know the feeling, but now that I have Dish network with the DVR, I can record stuff and screen through it to watch just what is important to me.



DragRacer,

The vanes in the turbo are actuated hydraulically with the engine oil that is supplied to the center section. An electric solenoid modulates the hydraulic control. Electronic signals are delivered to the solenoid mechanism from a microprocessor that interfaces with a Banks Six-Gun tuner.



Peter Treydte

Banks Power