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

Roll Call - 996 Tiptronic Owners

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Old Aug 17, 2010 | 03:55 PM
  #106  
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Originally Posted by bad107
I am just basing this on the k24/18g dynos i have seen, very linear.

The only 16G dyno i have seen is the AMS Billet 16 which shows crazy torque at very early RPMs.

Is it horsepower or torque that kills the tranny? Does anyone know the actual issue with the tranny? Is it the overheating? The 3rd gear clutch pack? Combination?

Can you explain tuning out the torque? If torque is the tranny killer, dialing that back to safe levels (trial and error), seems like a good way to go.

OK. The Billet K16 is NOT a 16g. 2 VERY different turbos. The billet K16 (regardless of who's it is) is very new technolongy. The 16g is 15-20year old technolgy. YOu will notfind anyone with 16g's making the kind of power and TQ a Billet K16 does.

Tuning out TQ is done all the time, especially with stock bottom end cars. You typically make the most TQ at the end of spool. This can be done with boost, timing or both. With these cars (with stock equipment), you can control how boost comes in and you can retard timing on the TQ ramp to keep it at safe levels. This changes some as you get into bigger turbos as you make more power with less boost because you have more VOLUME of air and fuel to make the same power...
 
Old Aug 19, 2010 | 07:03 AM
  #107  
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Originally Posted by waymegelli
Don't know about either - yet. The installation should be finished today and I hope to do some PBox testing soon, then take it to the dyno in the next couple of weeks. Only time will tell about how the tip holds up.
Waymegelli,

I have heard from many people that with the tip, you can not even run 18g's at full boost without running into tranny trouble; a couple good runs on a 20g and the tranny is toast....how are you able to run the GT30's without a problem? What boost are you running it at? Have you ran race gas yet?

Thanks!
 
Old Aug 19, 2010 | 08:46 AM
  #108  
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Originally Posted by bad107
Waymegelli,

I have heard from many people that with the tip, you can not even run 18g's at full boost without running into tranny trouble; a couple good runs on a 20g and the tranny is toast....how are you able to run the GT30's without a problem? What boost are you running it at? Have you ran race gas yet?

Thanks!
I am running TIAL Gt28's with meth @ 1.4-1.5 bars. My car is making over 600lb/ft at the wheels. I drive the hell out of my car and havent really had any issues. What made a difference for me is making sure that the tranny fluid is changed out every 60k miles.
 
Old Aug 19, 2010 | 08:49 AM
  #109  
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Originally Posted by bad107
What mods do you have done?
Here os a Dyno printout with only a Revo Stage 1 program & standard exhaust & cats with a K&N panel filter.
Since then I have had a 100 cell Miltek motorsport exhaust and stage 2 Revo.
Torque might not be up much more but BHP is estimated to be another 7% on top of Revo1 tune plus another 15 to 20 for the exhaust & cats.
Please note the figures are SBHP and do not allow for TC slip.
Frank.
 
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Old Aug 19, 2010 | 08:49 AM
  #110  
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Originally Posted by 007-911
I am running TIAL Gt28's with meth @ 1.4-1.5 bars. My car is making over 600lb/ft at the wheels. I drive the hell out of my car and havent really had any issues. What made a difference for me is making sure that the tranny fluid is changed out every 60k miles.

Good point. Heat kills ATF fluid. With increased power = increased heat. For hard driving, I'd say even change the fluid with every oil change.

Are their any oil coolers available to enhance the tip's cooling ability?
 
Old Aug 19, 2010 | 08:52 AM
  #111  
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Originally Posted by 007-911
I am running TIAL Gt28's with meth @ 1.4-1.5 bars. My car is making over 600lb/ft at the wheels. I drive the hell out of my car and havent really had any issues. What made a difference for me is making sure that the tranny fluid is changed out every 60k miles.
Thanks for the info. That is very good to know!

I have changed my ATF fluid several times and the car has less than 35k miles. I had a gasket leaking, so I would constantly add ATF fluid until I eventually had the tranny rebuilt (it takes only a couple more hours to repair clutch packs etc... if you are going to change the gaskets inside the tranny).

Below is a list of Tips that have upgraded turbos beyond the k16.

VividRacingTx - K24/18g - a road course is what destroyed his tranny

996TTalot - K24/20g, tranny destroyed after just a few dyno runs

Waymegelli - GT30 - not fully installed yet

MY996TT - GT660 package - no problems at all

007-911 - GT28 - no problems

Are we missing any other no K16 tiptronic?

By the looks of it, the Garrett turbos haven't caused problems...maybe i shouldn't install the k24/18gs next week lol
 

Last edited by bad107; Aug 19, 2010 at 09:04 AM.
Old Aug 19, 2010 | 10:28 AM
  #112  
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Originally Posted by Brad Bedell
Good point. Heat kills ATF fluid. With increased power = increased heat. For hard driving, I'd say even change the fluid with every oil change.

Are their any oil coolers available to enhance the tip's cooling ability?
there are some companies who make this but i don't remember the names.
 
Old Aug 20, 2010 | 09:23 AM
  #113  
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So I talked to the dude who can rebuild these tranny to stock (works at a mb dealership in cali).

I mentioned to him that the sl65 uses the same tranny and puts out a ton of torque, and he said one difference between porsche and mb is that on the sl65 the throttle is left off between right as it shifts; Porsche's never release the throttle between shifts, which hurts the tranny with high hsp.

He also mentioned that when he rebuilds the clutch packs, the 3rd gear has a many packs that can fit. Porsche already maxs out the tranny. You really have to go to one of those Europe shops to get it stronger ($$$$)

Ben
 
Old Aug 20, 2010 | 09:28 AM
  #114  
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Originally Posted by bad107
So I talked to the dude who can rebuild these tranny to stock (works at a mb dealership in cali).

I mentioned to him that the sl65 uses the same tranny and puts out a ton of torque, and he said one difference between porsche and mb is that on the sl65 the throttle is left off between right as it shifts; Porsche's never release the throttle between shifts, which hurts the tranny with high hsp.

He also mentioned that when he rebuilds the clutch packs, the 3rd gear has a many packs that can fit. Porsche already maxs out the tranny. You really have to go to one of those Europe shops to get it stronger ($$$$)

Ben
Ben why are you not give a call or e-mail to MKB dealer in us to see what can they do if they can do something there.

USA


Company: MKB North America

Mr. Daniel Bird

Street: 7902 NE St. John's Road #103a
City: Vancouver, WA 98665

Phone: (360)-334-1016
Fax: (360)-334-1016
Mail: Danielb@mkb-power-NA.com
 
Old Aug 20, 2010 | 09:31 AM
  #115  
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Originally Posted by alex55
Ben why are you not give a call or e-mail to MKB dealer in us to see what can they do if they can do something there.

USA


Company: MKB North America

Mr. Daniel Bird

Street: 7902 NE St. John's Road #103a
City: Vancouver, WA 98665

Phone: (360)-334-1016
Fax: (360)-334-1016
Mail: Danielb@mkb-power-NA.com
I left a msg a few weeks ago...no reply. Called a couple more and no answer.
 
Old Aug 20, 2010 | 09:46 AM
  #116  
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Originally Posted by bad107
I left a msg a few weeks ago...no reply. Called a couple more and no answer.
check you PM
 
Old Aug 20, 2010 | 12:52 PM
  #117  
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Check out this post from Switzer...I wonder if they do it in house or outsource to MKB...

http://www.teamspeed.com/forums/997-...-upgrades.html

FYI...its about $8k
 

Last edited by bad107; Aug 20, 2010 at 01:02 PM.
Old Aug 20, 2010 | 01:33 PM
  #118  
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MKB - 3990€ + shipping
 
Old Aug 20, 2010 | 01:35 PM
  #119  
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Originally Posted by alex55
MKB - 3990€ + shipping
Switzer essentially does the same thing MKB does...Maybe switzer's price could come done since the euro plummeted

I plan on waiting until my tranny gets messed up and then I will pursue one of these routes (along with some really big turbos )
 
Old Aug 20, 2010 | 01:59 PM
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Originally Posted by bad107
Switzer essentially does the same thing MKB does...Maybe switzer's price could come done since the euro plummeted

I plan on waiting until my tranny gets messed up and then I will pursue one of these routes (along with some really big turbos )
This is exactly my route. 3rd has already started so when it eventually goes I will go the way Ken has and use MKB. For now I back off just a little when I change gear in 3rd. Seems to reduce the slip and I dont get the loud clunk from the tranny when it stops slipping.
I'm only on k16's as well ( for now), although I think some damage was started when it was on the dyno as its 3rd gear that is used for all the pulls.
Frank
 


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