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

Fine tuned EVO/Imagine GT2 Tuning - Killer Angel, move to the right lane

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Old Apr 2, 2004 | 08:17 PM
  #16  
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This was on pump gas (93). Ryan can only run one program he does not have an IBE.

The GTII is able to obtain 600HP at the crank without issue. The next stage up requires a turbo change.
 
Old Apr 2, 2004 | 08:22 PM
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Very, very impressive Ryan. Usually three runs are performed at the same time. Do you have those available? I have to admit, you did get my attention enough to pull out Killer Angel's dyno runs. Your above run is very close to Killer Angel's October 2003 runs without nitrous with her 3.6 L motor. Killer Angel's runs were performed at a consistent 1.2 bar. I am assuming the conversion factors being used on the dyno are SAE 1990 Std Revision.

What are you using for an intake?
 

Last edited by cjv; Apr 2, 2004 at 10:17 PM.
Old Apr 2, 2004 | 08:29 PM
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Originally posted by J.Moss
Hi Kevin,

More power or more pressure per cycle is a compressive load on the rod. Meaning it will load up the beam. Not necessarily the cap and not the bolt.

RPM's put a really high load on the bolts and cap. This is why a boosted motor is actually less hard on rod than a 9000 rpm N/A motor.

Also has to do with torque (power per cycle). So if you a motor that makes 600 ft/lbs at 2000 rpm's it is a much higher load on the rod than the same torque at 4000 rpms.

Bye.
Jeff,

I have to agree with you on that one. That is why we don't add nitrous until after 4400 rpm's.
 
Old Apr 2, 2004 | 08:32 PM
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Originally posted by PorschePhD
This was on pump gas (93). Ryan can only run one program he does not have an IBE.

The GTII is able to obtain 600HP at the crank without issue. The next stage up requires a turbo change.
Stephen,

With pump gas at 1.3 bar, what does the afr's look like? Can you share them over the rpm range?
 

Last edited by cjv; Apr 2, 2004 at 08:42 PM.
Old Apr 2, 2004 | 08:40 PM
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Originally posted by J.Moss
That is really a kick *** dyno plot! Congradulations!

Why does everyone seem to think that they need rods at these power levels? Has ANYONE actually failed one?

Jeff
Jeff,

I haven't seen one fail yet either. Didn't the 993 turbo's start losing rods at these levels? The 993 and 996 turbo's have the same rods and this is my guess why people feel the way they do. Obviously something is different. Maybe it is the heat and cooling? I'm not really sure.
 
Old Apr 2, 2004 | 08:48 PM
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Hey Ryan, I'm in the right lane......what are you waiting for?
 
Old Apr 2, 2004 | 08:54 PM
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Chad,
I will get the charts for you. Todd copied them to disc, I will have the full range on chart in a couple of days. I have data logs, but they way they read is not helpful to the public. The car was sitting in the 12s most of the range.
 
Old Apr 2, 2004 | 08:55 PM
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Stephen,

Whose intake is he running?
 
Old Apr 2, 2004 | 09:40 PM
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Old Apr 2, 2004 | 09:49 PM
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Originally posted by cjv
Stephen,

Whose intake is he running?
Chad, the car is still running the OEM fresh air inlet ducts and throttle body.
 
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Old Apr 2, 2004 | 09:49 PM
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Originally posted by Kevin
Jeff we have had bearing/rod failures at the 650 mark in turbo 993's, the 996 share the same basic rotating assy. Like Chad said, with H20 cooling the thermal dynamic might be giving us some headroom. And yes, the turbo engines due dampen the rotational assy. The rod bolts have been the problem...

What kind of R's were the motors running that the bolts failed in?
 
Old Apr 2, 2004 | 09:51 PM
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Todd,

Now it really has my curosity up. Is the hp/torque correction factor SAE 1990 Std.?
 
Old Apr 2, 2004 | 09:55 PM
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Ryan, Lou, the guys at Fall Line and the guys at the Porsche Exchange, thank you for your hospitality. It was an interesting couple days for Kaspar and I but all in all I think the trip was an overall success. I am glad that we had the opportunity to make David’s car run like MAD and Ryan’s GT2 a BEAST.
 
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Old Apr 2, 2004 | 09:58 PM
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Originally posted by cjv
Todd,

Now it really has my curosity up. Is the hp/torque correction factor SAE 1990 Std.?
Not sure, I will check in the AM. I am beat and am heading off to bed. I will get back to you.
 
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Old Apr 2, 2004 | 09:58 PM
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Originally posted by Todd @ EVO
Ryan, Lou, the guys at Fall Line and the guys at the Porsche Exchange, thank you for your hospitality. It was an interesting couple days for Kaspar and I but all in all I think the trip was an overall success. I am glad that we had the opportunity to make David’s car run like MAD and Ryan’s GT2 a BEAST.
Props Todd!

Is this a 100% bolt on kit?

If so that is VERY IMPRESSIVE!

Moss
 


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