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

Dropping my car off at TPC Racing next week..

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Old Mar 10, 2010 | 03:18 PM
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Originally Posted by ttboost
Like Garrett T-60's with a .69A/R?
I have no idea what a T-60 is.
 
Old Mar 10, 2010 | 03:22 PM
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Originally Posted by unvmy996
Hmm... when i saw a few other places dynoing p cars,like EVOMS , they put fans right at the side duct/inlets and infront of the car also...

this way i see on the vid it doesnt seem that there is any air going into the intercoolers and in scotts case no air really hitting his filters ?
Because of my Proto intake setup, if the fans were located in a different location, the car might make more power. Some tuners remove the air filters and rear bumper covers when dynoing, and that makes more power as well.

But I'm not concerned with making the maximum power at this stage. I simply want a baseline to use as comparison for when the new ICs are installed. Once they're on, as long as the car is dynoed with the fans in the same location as they are now, with the same fuel, at the same boost level...that will produce a fairly accurate comparison.
 

Last edited by Divexxtreme; Mar 11, 2010 at 07:08 AM.
Old Mar 10, 2010 | 03:25 PM
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Originally Posted by Divexxtreme
I have no idea what a T-60 is.
Old Turbonetics nomenclature I guess. It's been while. I used a pair of these on my TT Camaro when I built it.

http://www.turboneticsinc.com/60series_turbochargers
 
Old Mar 10, 2010 | 03:26 PM
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Originally Posted by unvmy996
Hmm... when i saw a few other places dynoing p cars,like EVOMS , they put fans right at the side duct/inlets and infront of the car also...

this way i see on the vid it doesnt seem that there is any air going into the intercoolers and in scotts case no air really hitting his filters ?
Nick although it is not optimal it is usually what is done. I made 868rwhp with ONLY a fan in the front of the car. No fans by the intercoolers or filters (which are above the intercoolers). It really sucks because you know there is a power loss from it, but just gotta do what you can!
 
Old Mar 10, 2010 | 03:56 PM
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Not sure why everyone wants to see big numbers here. After all big numbers don't mean a thing unless you can transfer all the power on the ground which I am sure Scott will be able to hack it out Just like Scott always says "Walk softly but carry a big stick"
 
Old Mar 10, 2010 | 04:00 PM
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Originally Posted by art4iza
Not sure why everyone wants to see big numbers here. After all big numbers don't mean a thing unless you can transfer all the power on the ground which I am sure Scott will be able to hack it out Just like Scott always says "Walk softly but carry a big stick"
True. But the car currently makes enough power to run a 5.4X 60-130, and hopefully will be even quicker after I get it back. I can't wait to see what she traps at the dragstrip.

Regardless, at full boost on race fuel, it should end up making relatively "big" dyno numbers.
 

Last edited by Divexxtreme; Mar 11, 2010 at 06:15 AM.
Old Mar 10, 2010 | 04:04 PM
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Originally Posted by Powell
Nick although it is not optimal it is usually what is done. I made 868rwhp with ONLY a fan in the front of the car. No fans by the intercoolers or filters (which are above the intercoolers). It really sucks because you know there is a power loss from it, but just gotta do what you can!
Chris , got ya bro , i was just curious thats all .
 
Old Mar 10, 2010 | 04:32 PM
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Originally Posted by Divexxtreme
Mike,

The car has 5 gallons of 93 it now. Once the new ICs are installed, we will re-dyno at the same boost and see if tthere's a difference. Then, they'll turn the boost and tune the car (if needed) on 93 to see how much power I can make on that octane. I'm not concerned if we extract every possible HP at this level, since I won't be running 93 very often. Maybe 5% of the time.

They'll then drain the tank, and dump in the 5 gallons of 100 octane I gave them. Since I can inexpensively get this fuel out of a pump near my house, it's the fuel I'll be running 90% of the time on the street. They will crank the boost up and (retune if necesary) to maximize my power on 100. I want every last bit of power I can get with this fuel.

Once they're done with 100, they'll start pouring in the 110 leaded that gave them until they hit 1.7ish BAR and we see what she makes at that level. That will be my dragstrip/60-130/"racing against a very fast car" fuel. I'll probably run it 5% of the time.

That said, the car is strong even with the EBC off. The previous owner also owned a 997 GT2 and raced it against my car with the EBC off on pump gas. He said that even at that level, my car put multiple lengths on his 997 GT2.
Thanks for the explanation Scott.

Maybe I am not following your explanation correctly, but if they put the ICs on before putting in the 100 octane we wont know what the car can do on their dyno at higher boost before the mod. Thus, how can we tell if the car gained any hp in the intended application ie. higher boost pressures?

Not trying to be critical or argumentative just hoping for apples to apples comparison.
 
Old Mar 10, 2010 | 04:42 PM
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Originally Posted by ttboost
Old Turbonetics nomenclature I guess. It's been while. I used a pair of these on my TT Camaro when I built it.

http://www.turboneticsinc.com/60series_turbochargers
Booby's old car( now Scott's) has custom Garrett non ball bearing turbos... they are not off the shelf. I have been in this car a few times and driven it.... Todd said numerous times to us that this turbo has a lot left in it... on the dyno it just wanted to sing.... it beat out a 3076r in spool up as well as in HP/TQ.
The only person(s) that knows exactly what they are is Bobby and the turbo builder. We can go on and guess but it's useless...
These are not made with any "new" billet technology just researched, matched up correctly... and tested.... It was meant for a stock motor run from .8 to 1.45 bar on unleaded gas.... that was goal.

Scott: not trying to get into your car just sharing what I actually know about it since Im very close with Bobby.


here are the Hotsides compared... gt3076r on top and this custom turbo on bottom.... (im holding the 3076r in my hand in the pic)

 
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Old Mar 10, 2010 | 04:46 PM
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Scott, car is gorgeous and may I add that it sounds so sweet...

 
Old Mar 10, 2010 | 04:51 PM
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Originally Posted by MBailey
Thanks for the explanation Scott.

Maybe I am not following your explanation correctly, but if they put the ICs on before putting in the 100 octane we wont know what the car can do on their dyno at higher boost before the mod. Thus, how can we tell if the car gained any hp in the intended application ie. higher boost pressures?

Not trying to be critical or argumentative just hoping for apples to apples comparison.
Mike,

I completely understand where you're coming from.

My take is, if the car does make more power at low boost from the IC swap...then at mid and high boost, the increase will be same or greater. Not less than.

Sure, I could pay to have more fuel sent up and have them dyno the car at all boost levels, but I was limited in the amount of fuel I could bring with me when I dropped the car off...and honestly I'm not concerned with the before and after results at mid and high boost. I know that if it makes power down low, it will make more power up top. I will also verify this with 60-130 runs.

Keep in mind that my initial reason for creating this thread was not to document every possible variable of the IC swap. I just decided to drop my car off at their shop to get some work done and figured you guys would like to hear about the results...even if those results only show part of the picture.
 
Old Mar 10, 2010 | 04:54 PM
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Originally Posted by Divexxtreme
Mike,

I completely understand where you're coming from.

My take is, if the car does make more power at low boost from the IC swap...then at mid and high boost, the increase will be same or greater. Not less than.

Sure, I could pay to have more fuel sent up and have them dyno the car at all boost levels, but I was limited in the amount of fuel I could bring with me when I dropped the car off...and honestly I'm not concerned with the before and after results at mid and high boost. I know that if it makes power down low, it will make more power up top. I will also verify this with 60-130 runs.

Keep in mind that my initial reason for creating this thread was not to document every possible variable of the IC swap. I just decided to drop my car off at their shop to get some work done and figured you guys would like to hear about the results...even if those results only show part of the picture.
Totally understand.
 
Old Mar 10, 2010 | 04:55 PM
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Originally Posted by MARKSKI@911tuning
The only person(s) that knows exactly what they are is Bobby and the turbo builder. We can go on and guess but it's useless...
I also know exactly what they are since I've spoken with the turbo builder...and also just had new housings installed.

Originally Posted by MARKSKI@911tuning
here are the Hotsides compared... gt3076r on top and this custom turbo on bottom....
P.S - I think the hotsides in the picture are the other way around.
 

Last edited by Divexxtreme; Mar 10, 2010 at 05:04 PM.
Old Mar 10, 2010 | 04:58 PM
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Originally Posted by Neil Switzer
Scott, car is gorgeous and may I add that it sounds so sweet...


Ha ha...ya, it does sound pretty sweet, huh?

Thanks, Neil.
 
Old Mar 10, 2010 | 05:48 PM
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Originally Posted by Divexxtreme
I also know exactly what they are since I've spoken with the turbo builder...and also just had new housings installed.




P.S - I think the hotsides in the picture are the other way around.

You possibly may but I don't even know lol the point is it's not a off the shelf set up.

Nope i got it right.... here is another pic of the turbo...

 
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Last edited by markski@markskituning; Mar 10, 2010 at 06:00 PM.


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