997 Porsche 911 GT2 - Clever turbo's!

Gee

Gee

Member +
Something I found on another site.

Even more impressive is the turbo's VTG technology - in case you don't know what that is (I know I sure didn't at first), it stands for Variable Turbine Geometry. In essence, Porsche's VTG technology allows their turbos to replicate the good aspects of different types of turbos - the quick spooling characteristics of small turbos AND the max boost/high flow capabilities of big turbochargers. They do this by using adjustable angle guide vanes - that's just fancy talk, but let me break it down a bit more simply for you. There are adjustable fins inside the turbos which stay close together to restrict the airflow inside the turbo, replicating the characteristics of a small turbo, allowing the GT2 to get to high boost very quickly at all times. However, when max boost is achieved, the fins open up so more air/gases can pass through the turbo with much less restriction, which allows the GT2 to build more power, like what a big turbo would do.
Click to expand...

Nice!
 
Cornish-Glanza

Cornish-Glanza

Member +
wonder what the cost from Porsche is for a new turbo....OUCH!

impressive stuff though! never had any idea they made turbos that mechanically intelligent.
 
T

turboflow

Member +
heard of it a while back, would be brilliant on a starbo

vtg.jpg
 
W

white-ep82

Member +
i think this isnt brand new technology??? variable vane turbos have been about before iirc. These seem a step up though in performance!
 
S

Sigma

Member +
Thats a huge turbo pictured! However, completely irrelevant.

The VV turbo's have been around for a few years now, and it's a brill idea!
 
Aga

Aga

Member +
its being used for many years, however only on the heavy industry and biiiig tractors etc.
 
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alan_d

Lifer
my mates propane injected turbo diesel golf has had one of these since late 99, its roughly about the same size as a T51, only with different characteristics for DERV, it ate and sh1t his quattro, only the boost characteristics on the Quattro swb scare him more.

he has a yard out the back of his garage, and I can vividly remember him going to donut the quat, and when boost kicked in it near pitched him into the wall! he got out, face white as snow, and said 'funk that' or words to that effect, garaged it, and never drove it again.
 
Jay

Jay

Admin
Did the training discs in work a few years back. Nice in principle, VW use them in various models. It's great till they quit working properly.
 
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Adam_Glanza

Member +
i no alot of diesels use them, and yes audis and vw's have had them for a while now!!

not sure about petrol turbos, im sure there would of been tho, maybe they never had the need for one?
 
starbogt

starbogt

Member +
Originally these couldn't run high boost due to the excessive heat there were a lot of failures but Parsche have updaqted the technology and taken them to a new level. These are very expensive I read an article about 8months ago about them.
 
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