996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

New videos of today's Run in Mexico

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  #76  
Old 07-29-2008 | 08:15 PM
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Originally Posted by DLSJ5
Robert your car is definently capable of sub 9's. I hit 8.67 on approx 8.5-9psi of boost, when you and I ran I was running 10psi, about 30WHP more. I ran the 8.6 in 50 degree temps. I think that last shift is really hurting you.
There is one location that is flat and we should be able to get a good time. The only problem is that we go under a large underpass and the satellite always drops for a second. Will that affect the run?
 
  #77  
Old 07-29-2008 | 09:01 PM
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RS38: do you think my dyno graph is due to an optimistic dyno?

I ran it at 1.1 BAR on 91 octane.

If the turbos are good for 570Hp, 516 Rear Wheel HP would equate to about 10% drivetrain loss.

Originally Posted by RS38
ok 1.2 bar:
If I look at the K16 compressor map I can see maximum air mass flow of ~0.17 to 0.18 cubic meters per second per bank. That equals to 480/500 engine(!) or flywheel HP.
this power in an heavy 4wd convertible makes the other cars look very stupid if they seem to be nearly equally fast...

edit:
ups sorry, you mentioned a TTS: the k24 can blow a bit more up to 0.20-21 cm/s which can be up to 570 HP at a very bad compressor efficiency level (-> hot air intake), but opcoming detonation could be fixed by your very high rated fuel.

didn't you try any 60-130 with 1.2 bar and 109 octane?
 
  #78  
Old 07-29-2008 | 11:10 PM
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Originally Posted by robertp
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  #79  
Old 07-29-2008 | 11:36 PM
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  #80  
Old 07-30-2008 | 03:59 AM
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Originally Posted by ari
RS38: do you think my dyno graph is due to an optimistic dyno?

I ran it at 1.1 BAR on 91 octane.

If the turbos are good for 570Hp, 516 Rear Wheel HP would equate to about 10% drivetrain loss.
15% loss for AWD????
 
  #81  
Old 07-30-2008 | 06:22 AM
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Originally Posted by ari
RS38: do you think my dyno graph is due to an optimistic dyno?

I ran it at 1.1 BAR on 91 octane.

If the turbos are good for 570Hp, 516 Rear Wheel HP would equate to about 10% drivetrain loss.
1.1@91 should be a more health one, but would not reach 570HP.

where did you post your dyno plot? what I heard is that especially the dynojets are VERY optimistic which is due to it's low costs and that it has no real brake to hold then engines longer on certains revs. An engine that revs to redline can output more power than if it lasts longer (increasing temps).
 
  #82  
Old 07-30-2008 | 06:29 AM
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btw: most/all tuners in germany do not provide more than true 540-550 engine HP with 93-95 octane (US-spec) with stock K24 due to reliability issues. increasing boost will put the intake air above 65 degrees celsius, which makes the ECU becoming operating safely.
It is not very common here to get race fuel when you are on the track.

BTW2: I never saw an EBC here in a 911 Biturbo, and replacing Wastegate and DV/BOVs is also quite uncommon, but I think it is very likely to be considered.
 
  #83  
Old 07-31-2008 | 04:56 PM
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Originally Posted by RS38
ok 1.2 bar:
If I look at the K16 compressor map I can see maximum air mass flow of ~0.17 to 0.18 cubic meters per second per bank. That equals to 480/500 engine(!) or flywheel HP.
this power in an heavy 4wd convertible makes the other cars look very stupid if they seem to be nearly equally fast...

edit:
ups sorry, you mentioned a TTS: the k24 can blow a bit more up to 0.20-21 cm/s which can be up to 570 HP at a very bad compressor efficiency level (-> hot air intake), but opcoming detonation could be fixed by your very high rated fuel.

didn't you try any 60-130 with 1.2 bar and 109 octane?
So you think I am getting 570HP (crank) without an exhaust, Plenum, or headers?
 
  #84  
Old 07-31-2008 | 10:38 PM
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I can not open any of the files Robert to view the videos, any advice.
 
  #85  
Old 08-01-2008 | 01:10 AM
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Originally Posted by robertp
There is one location that is flat and we should be able to get a good time. The only problem is that we go under a large underpass and the satellite always drops for a second. Will that affect the run?
It could affect the run, yes.
 
  #86  
Old 08-01-2008 | 05:42 AM
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Originally Posted by robertp
So you think I am getting 570HP (crank) without an exhaust, Plenum, or headers?
no, unlikely, the K24 should be capable of, if all other bolltle necks are removed.
 
  #87  
Old 08-01-2008 | 09:22 AM
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Hey guys, there is a chance i can't make it out this week.

Becareful out there guys! See you next week, if i can't make it
 
  #88  
Old 08-01-2008 | 10:37 AM
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Originally Posted by NineNineSixTT
Hey guys, there is a chance i can't make it out this week.

Becareful out there guys! See you next week, if i can't make it
Let's be sure to hook up the next Saturday and see what's what!
 
  #89  
Old 08-01-2008 | 02:03 PM
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Originally Posted by art4iza
I can not open any of the files Robert to view the videos, any advice.
You have to right click on them and save them to your desktop. They are too big to view from the server.
 
  #90  
Old 08-01-2008 | 02:06 PM
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Originally Posted by art4iza
I can not open any of the files Robert to view the videos, any advice.
I saw the video of your car. We are in trouble.
 


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