Modify a VGT?

[Oilfield_Mafia]

Hey guys, is it possible to modify a stock VGT from an LBZ? I had a guy say he ported and polished the intake vain and put a different turbine wheel in his.. Is this even possible?

Ive never heard any of the pros here say much about the VGT's and sure aint heard noone say anything like this..

Is this possible? or does it even help anything?



Thanks!

 

[Turbo Buick 6]

Hey guys, is it possible to modify a stock VGT from an LBZ? I had a guy say he ported and polished the intake vain and put a different turbine wheel in his.. Is this even possible?

Ive never heard any of the pros here say much about the VGT's and sure aint heard noone say anything like this..

Is this possible? or does it even help anything?



Thanks!

You can port the compressor cover, but it really doesn't do much if anything. There also are no "vanes" on the compressor side, only on the turbine side. I know there was talk that someone was developing new vanes for the stock unit. Fingers??? And yes the compressor wheel can be changed....Thats what cheetah turbos are. You also need to bore the cover out for the larger wheel or make a new cover. So sure it can be done.....but not something a shadetree mechanic does on kitchen counter:rofl:

 

[Oilfield_Mafia]

Thanks!

 

[tinman22]

both fleece and danville performance can modify stock turbos.

 

[minisub]

As others have pointed out Fleece and Danville offer different wheel combinations. I on the other hand have a stock VVT (housing/wheels) with non-OEM vanes. So, yes, it is possible.

 

[Dan@PPE]

there are other options also.

 

[LarryJewell]

moved here

 

[Killerbee]

As others have pointed out Fleece and Danville offer different wheel combinations. I on the other hand have a stock VVT (housing/wheels) with non-OEM vanes. So, yes, it is possible.

assuming objectivity, please state how the vehicles has benefitted.

 

[beach_33]

i have been waiting to here how fingers setup works. i was wanting a set in my cheetah. if they would work in one

 

[Fingers]

Minisub's vanes suffer from laggy spool-up. Big Angry's are significantly better. I am now running a set that spools like it should, but the compromise has been more back-pressure than my original design. Less pressure than stock, but still up there. For instance, a WOT run producing 30 PSI of boost has drive pressures from 35-37 PSI depending on RPM. This compares to stock being 40+ and the original design being 33-34 PSI back pressure.

 

[othrgrl]

So how about a set like you are running made to fit in the 71.5 Cheetah?

 

[minisub]

assuming objectivity, please state how the vehicles has benefitted.

Can't say. Don't have any hard data and the SOTP meter says both good and bad.

Since the original question was could a stock turbo be modified, figured it was relevant to chime in that it is possible...

 

[Fingers]

So how about a set like you are running made to fit in the 71.5 Cheetah?

They would need to be fitted to the turbo. I don't have enough info to be sure that the vanes would clear the turbine without a sample to work with.

 

[beach_33]

fingers i believe i saw a pair of your vains at braydens laying on the table

 

[Fingers]

Don't know what he is doing hanging on to those. Old design and not fitted to the Cheetah.

 

[mytmousemalibu]

Could this story be about a VGT not a VVT?

VVT= Variable Vain Turbo?..... Obvously variable vains....GM

VNT= Variable Nozzle Turbo? ..... Variable exhaust turbine housing change.....Ford 6.0L?

 

[Dan@PPE]

The turbo that comes on the LLY,LBZ,LMM are Garrett AVNT.

 

[mytmousemalibu]

The turbo that comes on the LLY,LBZ,LMM are Garrett AVNT.

Oh, well thanks Dan, i didnt know! Im just a plain jane LB7 pilot! :rofl:

 

[SmokeShow]

what's the "a" stand for?

 

[Brayden]

Advanced if I recall...

PS the Ford 6.0L uses the same turbo for all practical purposes... the vane pos sensor isn't used and the drain is different but everything else is about the same... The vanes are the same as the LLY.

Brayden