Billet turbos
#18
09-16-2009, 04:08 PM
Basic Sponsor
You see, many "garrett" based turbos are usually tested on Evos or supras at 30+ psi... but that does not mean they will perform with similar results on a P car at 1 or 1.2 bar... and that is usually where we run these cars... the efficiency of most turbos is at much higher boost levels then what we run these cars at... I for example, tested and currently have HTA 35rs.. but prior to that I had gt35rs... and from documented information the HTA blows away the regular 35r.... unfortunately that was NOT the case on my P car.. I know because I did the testing back and forth... the lag was same and HP was same... all that at .8 to 1.5 bars...
So until I see someone coming up with turbos that spool up faster and produce more HP at P car boost levels I dent to say it is all a marketing game and nothing more... I know first hand...
markski
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2001 996TT 3.6L and stock ECU
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2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
#20
09-16-2009, 04:31 PM
Registered User
i'd like to see someone run a triple ball bearing set of these:
http://www.compturbo.com/products/in...roduct=CT460-1
http://www.compturbo.com/products/in...roduct=CT460-1
#22
09-16-2009, 04:50 PM
Join Date: Jun 2009
Location: Valhalla
Posts: 159
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Seen test regarding these they perform like dbb .
i'd like to see someone run a triple ball bearing set of these:
http://www.compturbo.com/products/in...roduct=CT460-1
http://www.compturbo.com/products/in...roduct=CT460-1
#25
09-17-2009, 01:09 AM
maybe this is a dumb question, but would it be possible to make wheel's out of CF, magnesium or Titanium? The lighter weight, I'd think would aid in faster spooling which could make for more power down low.
#26
09-17-2009, 01:58 AM
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Join Date: Aug 2009
Location: Houston Tx
Age: 39
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its been done scott, and someone who posted in this thread has done it not sure if im allowed to say or not.
but anyways spooling is more the A/R ratios and exhaust pressures of the mix between the turbine housing and the compressor side of the turbo there isn't much weight between the shaft n two wheels to begin with. the ball bearing turbos spool faster because of less drag in the bearing cartridge.
most aftermarket turbo vehicles like to run alot more boost then we do and generally spool alot later then what we do. so its very hard to use info from experiences on other cars to the P car world.
but anyways spooling is more the A/R ratios and exhaust pressures of the mix between the turbine housing and the compressor side of the turbo there isn't much weight between the shaft n two wheels to begin with. the ball bearing turbos spool faster because of less drag in the bearing cartridge.
most aftermarket turbo vehicles like to run alot more boost then we do and generally spool alot later then what we do. so its very hard to use info from experiences on other cars to the P car world.
#27
09-17-2009, 03:12 AM
its been done scott, and someone who posted in this thread has done it not sure if im allowed to say or not.
but anyways spooling is more the A/R ratios and exhaust pressures of the mix between the turbine housing and the compressor side of the turbo there isn't much weight between the shaft n two wheels to begin with. the ball bearing turbos spool faster because of less drag in the bearing cartridge.
most aftermarket turbo vehicles like to run alot more boost then we do and generally spool alot later then what we do. so its very hard to use info from experiences on other cars to the P car world.
but anyways spooling is more the A/R ratios and exhaust pressures of the mix between the turbine housing and the compressor side of the turbo there isn't much weight between the shaft n two wheels to begin with. the ball bearing turbos spool faster because of less drag in the bearing cartridge.
most aftermarket turbo vehicles like to run alot more boost then we do and generally spool alot later then what we do. so its very hard to use info from experiences on other cars to the P car world.
#28
09-17-2009, 06:31 AM
Join Date: Jun 2009
Location: Valhalla
Posts: 159
Rep Power: 26
Hmmm ok so it seems that billet wheels are just as bad cast then and that you need to boost really high to gain anything. So we are more or less back to square one again . Ok ill be running K24/20G and meth/water inj. to put a little smile on my face for a while at least .
#29
09-17-2009, 07:03 AM
Glad to be a sponsor here! Our Porsche turbo kits fit a wide spectrum of power options with the Precision Turbo options we offer. The billet turbos do perform amazing at the upper end of their compressor maps but they also provide excellent low end power. While the low end isn't leaps and bounds beyond the Garrett turbos, they do perform equally if not better. We will see soon on Chris's car what a large turbo setup will do
#30
09-17-2009, 07:14 AM
Join Date: Jun 2009
Location: Valhalla
Posts: 159
Rep Power: 26
Nice to see that your a sponsor here as well. I have ordered my share of parts from you for my other cars and it has always worked out great
never had a problem and iam oversea customer.
to see that your a sponsor here as well. I have ordered my share of parts from you for my other cars and it has always worked out great never had a problem and iam oversea customer.
Glad to be a sponsor here! Our Porsche turbo kits fit a wide spectrum of power options with the Precision Turbo options we offer. The billet turbos do perform amazing at the upper end of their compressor maps but they also provide excellent low end power. While the low end isn't leaps and bounds beyond the Garrett turbos, they do perform equally if not better. We will see soon on Chris's car what a large turbo setup will do