We"re Waiting....
07-22-2006, 04:11 PM
#16
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Originally Posted by RK951
I checked out the link, very cool. Since we're on the topic of turbos, is there a turbo for the 944 that can hit 1bar under 3000rpm? Essentially, what is the quickest spooling turbo option for the 951? Best I've seen is Laust's modified 26/8 which is about 1bar at 3100.
2900-2950rpm on a K26/6
07-22-2006, 05:32 PM
#17
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There needs to be a standard on what gear.... useless trying to compare turbo spool if one is in 2nd and the other in 4th.
Rogue
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Last edited by Rogue_Ant; 07-22-2006 at 06:00 PM.
07-22-2006, 07:53 PM
#20
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Originally Posted by Rogue_Ant
There needs to be a standard on what gear.... useless trying to compare turbo spool if one is in 2nd and the other in 4th.
Rogue
Rogue
1) 4th gear
2) Level ground
4) Warmed up engine
5) About 3200 lbs of car and driver
6) Start at ~2000 rpm, floor it and read rpm when it gets to 15 psi boost
The ambient temperature probably has an effect too.
My modified K26-6 did it at 2700 rpm and my modified K26-8 does it at about 3100 rpm.
If the Vitesse stage II can hold 18 psi (or above) to 6000 rpm, then I am impressed.
Laust
07-22-2006, 08:23 PM
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Originally Posted by Laust Pedersen
If the Vitesse stage II can hold 18 psi (or above) to 6000 rpm, then I am impressed.
I did boost to 28psi by mistake once while troubleshooting a wastegate issue.
I wouldn't be surprised if this turbo could hold 25psi to redline.
07-22-2006, 08:26 PM
#22
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Originally Posted by Laust Pedersen
My modified K26-6 did it at 2700 rpm and my modified K26-8 does it at about 3100 rpm.
Laust
Laust
Modified how?
Rogue
07-22-2006, 08:31 PM
#23
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When the turbo makes boost in a 4th gear rolling start from 2000 rpm is not a very good gauge of anything in my opinion. My Super61 makes my full set boost of 16 psi on the boost gauge by 2800 in those conditions. But because of cam, timing, backpressure, AFR, etc...it still doesn't start making big power/torque ie., noticable acceleration until around 3600 rpm. Just because you got boost does not necessarily mean you got power.
07-22-2006, 08:45 PM
#24
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Originally Posted by EJ
To John at Vitesse:
The new 2007 997 Turbo has the turbo charger with the new Variable Turbine Geometry (VTG) so when are you going to come out with a turbo with VTG for our cars?
The new 2007 997 Turbo has the turbo charger with the new Variable Turbine Geometry (VTG) so when are you going to come out with a turbo with VTG for our cars?
07-22-2006, 08:46 PM
#25
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Originally Posted by Laust Pedersen
If the Vitesse stage II can hold 18 psi (or above) to 6000 rpm, then I am impressed.
Laust
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07-22-2006, 08:47 PM
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Originally Posted by schnellfahrer
I'm only on pump gas so I'm only boosting ~16psi.
I did boost to 28psi by mistake once while troubleshooting a wastegate issue.
I wouldn't be surprised if this turbo could hold 25psi to redline.
I did boost to 28psi by mistake once while troubleshooting a wastegate issue.
I wouldn't be surprised if this turbo could hold 25psi to redline.
07-22-2006, 09:16 PM
#27
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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.
Don’t be a chicken, it just needs a cold shower (a.k.a. port water injection). 
Laust
PS While it may be true to 25 psi, I hope readers know it is not advisable until someone has risked an engine and verified it in a well documented configuration or the seller (=Vitesse) has signed off on it.
Originally Posted by fast951
It'll hold it, just don't try it
Laust
PS While it may be true to 25 psi, I hope readers know it is not advisable until someone has risked an engine and verified it in a well documented configuration or the seller (=Vitesse) has signed off on it.
07-22-2006, 09:33 PM
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Originally Posted by Laust Pedersen
It should be on the list somewhere. Just do a search.
Rogue
07-22-2006, 09:34 PM
#30
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Originally Posted by fast951
New technology is always good! How about 2 of them for the 951 LOL..
But... You promised there'd be no stage 6 after I got your s5 turbo...