VTG turbos in the new 911....
#27
FD Under Construction =P
iTrader: (5)
Originally Posted by Aristo
Just curious also, by what means will you be controlling the vanes?
Originally Posted by __dave__
how soon will they be available for sale, and what sizes?
Originally Posted by Low Impedance
so what is the cost of one of those.
Originally Posted by dhahlen
Hrmm the possibility of making a GT45 streetable...
That's scary
That's scary
God I am BORED! Tuning tomorrow... yay!
#32
NorCal 7's Co-founder
Darren, you need some sleep!!
And I'm curious as to the method of vane control too. And if there is a way to tweak the vane operation to better suit an individual's needs. Thanks for posting up the pictures. This is really interesting stuff!
Zach
And I'm curious as to the method of vane control too. And if there is a way to tweak the vane operation to better suit an individual's needs. Thanks for posting up the pictures. This is really interesting stuff!
Zach
#39
multipersonality disorder
Join Date: Feb 2002
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i was thinking along those lines. but maybe the angle can't get steep enough to totally eliminate the need... it might depend on what boost pressure you're running, though.
#40
NorCal 7's Co-founder
That would be pretty cool to eliminate the wastegate, though I really don't see how the vanes could bypass enough exhaust to control boost. You know? From what I can tell the vanes can angle down to direct the air into the turbine wheel or lay back and let it take it's "normal" path through the housing like any other turbo would. But I don't see how it could bypass the turbine wheel all together since it would still have to leave the turbine housing in the same fashion. Does that make sense?
Last edited by BoostedRex; 05-02-06 at 11:09 AM.
#43
Originally Posted by bcty
this is very intresting.. id love to get someone to get this going so i can see how it would preform on a rotary.. a streetable gt45, thats retarded.
The vane control is via a pneumatic valve which works quite well. I also have designed a servomotor and controller for VGT turbos that I can apply. In general, VGT turbos have a larger turbine housing for a comparable sized turbo, so you normally do not need to use a wastegate. However, if you are using a smaller VGT turbo, in general, you might need to use one. The turbo in the photos will likely not need to run a wastegate since the volute area is quite large, and there is enough mass flow capacity.
In addition, the vane control can do all sorts of neat things. For example, clamp down at idle or light loads for near silent, stealthy exhaust "sound", go to full minimum opening between shifts so you maintain boost between shifts, and of course the turbo can "tune" itself automatically for the engines needs.
#45
Hey, where did my $$$ go?
Join Date: Feb 2001
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So could you use it to build boost while sitting still at the tree? Run the rpm's to say 6K and adjust the vanes and create a lot of boost???
What type of price range are these in??? Marco at Magnusmotorsports.com has a nice 13b manifold you can get with a T6 flange.
Stephen
What type of price range are these in??? Marco at Magnusmotorsports.com has a nice 13b manifold you can get with a T6 flange.
Stephen
#46
NorCal 7's Co-founder
IIRC Ernie got his 42R kit from A-Spec tuning. I don't know if Ernie's is a T6 or not, but I do know for a fact that A-Spec can and does make T6 manifolds. And I believe most would agree with me that Sean's workmanship is some of the best you'll find. PM ZeroR for more info. Please keep us updated!! I am very curious as to what the advantages on a road course or AutoX would be with a smaller turbo taking advantage of this technology??
Zach
Zach
#48
Just in time to die
iTrader: (1)
I made Ernie's manifold. I honestly thought about grabbing that same exact turbo I was just too far gone with my setup at that time. I'm not sure if his would work with that turbo due to turbine housing shape. Here is a manifold, and pic of the mocked up one on a car.