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

I want to see Pic and Info on the Badest Porsches!!!

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  #61  
Old 11-28-2006 | 11:07 PM
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Originally Posted by z8cw
Oh my, excuse me...not catching up, outdoing yourself.

From my RX7 experience I knew you have to increase the breathing capability of your engine by porting rather than just throwing bigger and bigger turbos on the engine.
Fabulous
I never said I just thru on bigger turbos. LOL
its on a GT3 RS race head with gt3 intake and exhaust cams... lower end was redone as well.... and thats just the beginning. we got rid of vario cam and now its running on gt3 street software. The fuel system is just like VRalexanders'... except I have a dual pump set up running parallel sucking from each sponson. We have the same setups except the heads...
 
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2001 996TT 3.6L and stock ECU
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  #62  
Old 11-28-2006 | 11:21 PM
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Originally Posted by MARKSKI
I never said I just thru on bigger turbos. LOL
its on a GT3 RS race head with gt3 intake and exhaust cams... lower end was redone as well.... and thats just the beginning. we got rid of vario cam and now its running on gt3 street software. The fuel system is just like VRalexanders'... except I have a dual pump set up running parallel sucking from each sponson. We have the same setups except the heads...
People have no idea the amount of work and invlovement your car has undergone
 
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  #63  
Old 11-29-2006 | 10:54 AM
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This is a question for the mega bhp guys:

Have you considered going to 3,8 litres? Just wondering what the pros and cons would be

thanks
adam
 
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  #64  
Old 11-29-2006 | 01:34 PM
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CJV has a 3.8 and a 4.0 motor. I would imagine that would help reduce the lag when putting on the bigger turbos.

You guys are all INSANE and I LOVE IT!

 
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  #65  
Old 11-29-2006 | 01:37 PM
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Originally Posted by buddyg
You guys are all INSANE and I LOVE IT!
Like my sign says ......

BTW.."Insanity" is where life (with the NOS turned on) begins and moderation ends!
 
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  #66  
Old 11-29-2006 | 05:13 PM
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Markski, when the car is done, can I have a ride?!?!
 
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  #67  
Old 11-29-2006 | 05:47 PM
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Originally Posted by dgussin1
Markski, when the car is done, can I have a ride?!?!
No problem....
 
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2001 996TT 3.6L and stock ECU
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  #68  
Old 11-29-2006 | 06:33 PM
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Originally Posted by AdamT
This is a question for the mega bhp guys:

Have you considered going to 3,8 litres? Just wondering what the pros and cons would be

thanks
adam
I had a 3.8 as well as a 4.0liter, however 3.6 seems to be the best bullet-proof combo....after all Porsche Motorsports uses 3.6liters and they could run whatever displacement they want to write a PO for...
 
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  #69  
Old 11-29-2006 | 07:06 PM
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Thanks alex,

So if you increased displacement you dont think there would be any appreciable gains in bhp or turbo response?

very best
adam
 
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  #70  
Old 11-29-2006 | 07:13 PM
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Originally Posted by AdamT
Thanks alex,

So if you increased displacement you dont think there would be any appreciable gains in bhp or turbo response?

very best
adam
Shure you would help spool-up by a few hundred RPM's and the torque would be greater on a 3.8liter....however longetivity wise I would stick to a 3.6liter...the bore/stroke of the engine is more in harmony with a 3.6....This reminds me of a long discussion with Todd at Protomotive when he was ordering my rods and Cylinder liners...the key to these engines is breathing...HEAD WORK....HEAD WORK....HEAD WORK!

Attachment 44821 <---Port work on my 996tt...368cfm!
 
Last edited by VRAlexander; 01-24-2007 at 04:00 AM.
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  #71  
Old 11-29-2006 | 07:53 PM
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Originally Posted by VRAlexander
the key to these engines is breathing...HEAD WORK....HEAD WORK....HEAD WORK!

Attachment 44821 <---Port work on my 996tt...368cfm!
Those McKenzie ported heads look mighty familiar . . . . here are mine:



As compared to stock:



Using the same tubos, my engine flows considerably more air, and makes more power, at lower boost, simply by virtue of the head work.

Craig
 
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  #72  
Old 11-29-2006 | 08:58 PM
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Craig, nice to see you back!
 
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  #73  
Old 11-29-2006 | 09:04 PM
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Wow. That's a huge difference, Craig. The leading edge looks a little rough. Is that fine, or should it be knife edged?
 
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  #74  
Old 11-29-2006 | 10:51 PM
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Since we are showing off out heads I might as well do mine LOL
GT3 RS race head...

 
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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




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  #75  
Old 11-29-2006 | 10:57 PM
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Originally Posted by Gramicci101
Wow. That's a huge difference, Craig. The leading edge looks a little rough. Is that fine, or should it be knife edged?
Actually you don't want something like that to be knife edged, or polished. While most would think a super smooth, very sharp edge would flow the best (less turbulence) it doesn't allow for a proper boundry layer and actually causes the wet flow to be far less than ideal. Many people forget that under pressure, loaded with fuel, it changes the flow charisteristics a great deal.

But in the most simplistic terms, think golfballs.

I'm so not getting into fluidynamics right now
 
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