Holset Variable Geometry Turbo

[Piers]

I just got back from a 2 day Holset seminar in Memphis. Learned a lot about their new VG HX40 & VG HX55 turbo's. Man these things are going to be a sweet setup. I orderd one so I can start building a kit to make it fit our 5. 9's. The VG HX40 ranges in exhaust turbine housing sizes from about a 9 sq. cm. to 24 sq. cm. Talk about having your cake and eating it to I'll post some pictures and more info once I get caught back up.

I wanted to thank Carl, from Holset, for inviting me & also for taking the time to show me some of Memphis's finer places to have a beer or two

 

[therabbittree]

i have always thought the variable vane style turbos were sweet the vw tdis use em and they help a lot with lag. . i think some 60 series detroits use a similar set up. . the vw use vnt - variable nozzle technology or turbine. . i forgot which. . but they are garret turbos... how much do these new holsets run $$ wise?... . and the contols are they vacuum?. . the vnt garrets are vacuum , they have a connection that looks like a wastegate, but instead of being on the exhaust housing, its inbetween the compessor and the turbine. . how is the holset setup?. .

cool beans!! . . Piers pioneering new ram diesel tech!

later

Deo

\x/ hillfolk!

 

[JHansen]

Verrry interesting!

This sounds cool... truly the best of all worlds! Imagine you have a list of beta testers longer than my arm but if you're looking for 1 more I'm your guy... . I'll step up my power accordingly!



Hoping to catch you in Calgary for the BOMBfest...



Jason

 

[Bob Wagner]

Sounds awesome

for the high HP guys

 

[KatDiesel]

$$$$$$$



Thats all I can think of when I think bout that turbo Be interesting to see what can be done with it tho.

 

[Piers]

Here [hopefully] is a picture of the new VG turbo

 

[Brian Cobb]

I'm just going to have to pay off the Mastercard alittle sooner so I can try one of these. Let us know how the testing goes ( on both ) I'll be waiting.



Also, Thanks for all the research and testing you do to keep us HP junkies going.



Thanks

Brian Cobb

 

[WeirCummin]

Here is another picture#ad

 

[WeirCummin]

a couple more#ad
#ad

 

[JHansen]

I sense future pain radiating from my wallet...

Unfortunately I've hung around here long enough that the BOMB bug has bitten hard... time to make some serious upgrades. I'm gonna be in the turbo market anyway-anxiously awaiting this little puppy . It's only money right? Can't take it with you...



Jason

 

[Forrest]

Just look at it as your kids inheritance going to a good cause.

 

[Vaughn MacKenzie]

Sweet. . . I want one of these puppies just because they look cool OK the graphic effects might have something to do with that but nonetheless it would look very good bolted up to MY exhaust manifold



Vaughn

 

[JHansen]

No kids yet (at least none I know of...)

and at the rate I'm dumping money into this truck I'll be in the poorhouse singlehandedly before much longer... . no need for a wife (for that part of the equation anyway )!



Hopefully nobody takes that the wrong way



Jason

 

[1tuffram]

Anyone know how this turbo is controlled? When reading the press release form Cummins on the common rail ISB to be in the 2003 trucks I thought it mentioned the variable geometry turbo will be controlled by engine electronic (computer). If this is the case can it be adapted to the current ISB electronics?

 

[John]

Originally posted by Vaughn MacKenzie

... but nonetheless it would look very good bolted up to MY exhaust manifold

Are you serious Vaughn? Come on, do that turbo justice and get rid of that pathetic stock exhaust manifold and step up to an ATS 3-piece unit.

 

[Piers]

There are several things that need to be done to make them work on our engines. Need an adapter to mount them to the manifold, the less expensive models are air actuated, so air compressor and tank, they are water cooled, so some minor plumbing, then we need to build a control module that tells it what to do based on several inputs, boost, throttle position, rpm of the engine, rpm of the turbo. One extra feature of this turbo is that when you drop it down to its smallest size & force more air into the pistons it will act like an exhaust brake. The Holset engineers estimated about 150 retarding hp, I'll run some tests and see what we get out of it..... maybe the worlds first "true" high performance brake

 

[BPINE]

Piers your not going to be happy untill you get all of my money are you lol. I put the new censored housing on the HX-40 over the weekend and it seems much better and will still go to 45 psi nicely. I need to do some more tests then hook up the trailer for the real test.

 

[1tuffram]

Thanks Piers, thought it could not be as simple as bolting it on and hooking up a few wires or lines.



Is the turbo you are going to be working on going to be a modified version of what will be on the common rail ISB or are you going to be developing a larger turbo for the high HP crowd (like a modified variable geometry HX40 or H2E eqivilant)??

 

[JHansen]

The more I hear the more I like!

The water-cooling should reduce the amount of time you have to idle before shutdown correct? And the brake-like function you can get out of it would be cool too...



Hoping to hear more about it when you get a functional prototype flanged up.



Jason

 

[R.E. Miller]

I was waiting for this...

This was something I posted about earlier, and found out that they were computer controlled, idea fizzled. Now with this in the hands of Piers, there are going to be some already sick Dodge/Cummins trucks running around that will just be insane