Why doesn't Garrett or Borg make these for tuner applications?
04-03-2012, 07:29 PM
#41
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I'm he'll listen to "Huster" the coolest cat on a bi+ch car forum....
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04-03-2012, 07:33 PM
#42
Tour de Franzia
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Why are you so concerned with my car again? You talk a lot of ---- about it but you fail to realize that it's a fast car, its reliable, and you'll probably incorporate something that I learned along the way that will save you money. Next time, instead of being an insolent ----, maybe consider the contributions some people make to this forum and that you might use some of our lessons learned the first time, and never realize the financial and time sacrifices of those who came before you.
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04-03-2012, 07:38 PM
#43
Please, call and tell him to never talk to customer asking about Porsche products again...... I'm he'll listen to "Huster" the coolest cat on a bi+ch car forum....
Lol...don't break your back with that accelerator pedal. I'm in a build here, dont worry, it'll be done soon enough and yes, it will be faster than your $hit box, in every way.
I'm he'll listen to "Huster" the coolest cat on a bi+ch car forum....Lol...don't break your back with that accelerator pedal. I'm in a build here, dont worry, it'll be done soon enough and yes, it will be faster than your $hit box, in every way.
Hell, even I've got a running turbo Miata which is a set of trials and tribulations unique to itself. Untill the day you get a running, reliable turbo Miata going, you may want to tone the ---- talking down a bit.
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04-03-2012, 11:43 PM
#51
Back on topic.
Our stock transmissions were designed to hold ~100ft/lbs-ish, plenty of people driving around reliably at double, even more in some cases.
Vane'd holset turbos may be designed to be reliable for 100K miles on a diesel engine, perhaps 50K is possible on gas. Anyone have any actual experience, please share.
Our stock transmissions were designed to hold ~100ft/lbs-ish, plenty of people driving around reliably at double, even more in some cases.
Vane'd holset turbos may be designed to be reliable for 100K miles on a diesel engine, perhaps 50K is possible on gas. Anyone have any actual experience, please share.
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04-04-2012, 10:46 PM
#56
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Ok, maybe I can get this thread back with some tech, lol.
One of the things nobody ever talks about with VGT turbos in gas applications is that they damp out exhaust gas pulses which can hurt spool (think the difference between a properly done manifold compared to a mediocre log manifold). In an app. like the 997 it doesn't matter much because the flat 6 pulses aren't even anyway, but in an I4 you can really take advantage of strong pulses to help get a larger turbine spinning. Obviously even more so in a twin scroll design. Not the end of the world, because the VGT can compensate somewhat, but its still one more factor to consider.
The real point, as Savington pointed out is temperature capability of the VGT turbine housings and vane mechanism. However, OEM small diesel apps are really kicking up the temp limits recently, especially in Europe, but I'm sure some will be coming here at some point, so there should be more choices in the future for people like us.
One of the things nobody ever talks about with VGT turbos in gas applications is that they damp out exhaust gas pulses which can hurt spool (think the difference between a properly done manifold compared to a mediocre log manifold). In an app. like the 997 it doesn't matter much because the flat 6 pulses aren't even anyway, but in an I4 you can really take advantage of strong pulses to help get a larger turbine spinning. Obviously even more so in a twin scroll design. Not the end of the world, because the VGT can compensate somewhat, but its still one more factor to consider.
The real point, as Savington pointed out is temperature capability of the VGT turbine housings and vane mechanism. However, OEM small diesel apps are really kicking up the temp limits recently, especially in Europe, but I'm sure some will be coming here at some point, so there should be more choices in the future for people like us.
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04-04-2012, 11:13 PM
#57
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Back on topic.
Our stock transmissions were designed to hold ~100ft/lbs-ish, plenty of people driving around reliably at double, even more in some cases.
Vane'd holset turbos may be designed to be reliable for 100K miles on a diesel engine, perhaps 50K is possible on gas. Anyone have any actual experience, please share.
Our stock transmissions were designed to hold ~100ft/lbs-ish, plenty of people driving around reliably at double, even more in some cases.
Vane'd holset turbos may be designed to be reliable for 100K miles on a diesel engine, perhaps 50K is possible on gas. Anyone have any actual experience, please share.
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04-06-2012, 01:33 AM
#60
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If I used it correctly, you'll need at least 26# of boost at 7500 to support 500hp.
26# of boost at 2500 = 389 Lb-Ft.
In the real world I would have guessed 30.
I half-assed it, left a lot of the parameters as-is. So it's not set in stone...
Maybe someone smarter than I could take a crack at it.
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