We"re Waiting....
07-23-2006, 04:14 AM
#31
Speaking of technology....I remember reading in Popular Mechanics several years ago about, I think it was Garrett, a company experimenting with an electric motor connected to the turbo to reduce/eliminate lag. Looks like it didn't pan out so far but sounds like a good idea.
07-23-2006, 04:58 PM
#32
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Originally Posted by Laust Pedersen
John, I know you are guarded about your turbocharger details, but are you willing to say whether the turbine is a -6 a -8 or something else. Due to backpressure a certain boost pressure with a -6 is a little less valuable than with a -8.
I never use the -6.
07-23-2006, 06:12 PM
#34
Three Wheelin'
I just got a job at Garrett, specifically in the VNT group. BorgWarner's "VGT" tech was copied from Garrett, where they originally used it on the Shelby CSX and currently on the VW/Audi TDi as well as lots of HUGE commercial/industrial diesel turbos. I'll be doing mostly larger diesel turbos, but there's a chance I might experiement with a VNT powered 951 in the next couple years.
Here's some more general info on variable geometry turbos...
http://en.wikipedia.org/wiki/Variabl...y_turbocharger
However, the bit in that wiki about higher EGTs on gasoline cars being the reason you don't see them more often is wrong. The introduction of the technology was on a gasoline fueled car. The real reason is cost. A fixed geometry turbo can do the job well enough in most cases that OEMs won't justify the higher cost of the VNT flavor of turbos.
I'm moving out to Cali in a couple weeks, I can't wait!
Here's some more general info on variable geometry turbos...
http://en.wikipedia.org/wiki/Variabl...y_turbocharger
However, the bit in that wiki about higher EGTs on gasoline cars being the reason you don't see them more often is wrong. The introduction of the technology was on a gasoline fueled car. The real reason is cost. A fixed geometry turbo can do the job well enough in most cases that OEMs won't justify the higher cost of the VNT flavor of turbos.
I'm moving out to Cali in a couple weeks, I can't wait!
Last edited by DanG; 07-23-2006 at 07:13 PM.
07-24-2006, 01:29 AM
#37
Three Wheelin'
Originally Posted by DanG
...copied from Garrett, where they originally used it on the Shelby CSX...
07-24-2006, 02:28 PM
#40
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Congrats on the job. Garrett always sounded like an interesting place to work.
It appears Garrett makes all/most of their GT series turbos in VNT form now? That creates quite a good selection of turbos to try on a 951
-Ian
It appears Garrett makes all/most of their GT series turbos in VNT form now? That creates quite a good selection of turbos to try on a 951
-Ian
Originally Posted by DanG
I just got a job at Garrett, specifically in the VNT group...
I'm moving out to Cali in a couple weeks, I can't wait!
I'm moving out to Cali in a couple weeks, I can't wait!
07-24-2006, 04:13 PM
#42
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First, congrats on the job. Cali is way better than Detroit. Second, we all look forward to hearing all that you learn. What city are you going to live in?
07-24-2006, 04:37 PM
#44
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Originally Posted by DanG
The job is in Torrance, I'll probably look for a place in Redondo or Hermosa Beach. I just typed/printed the resignation letter. Nervous excitement!
