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

how to Dyno a AWD 996TT on a 4WD Dyno Jet

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Old Apr 1, 2008 | 04:55 PM
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how to Dyno a AWD 996TT on a 4WD Dyno Jet

hi,
I would like to know if it is possible to Dyno a 9966TT on a 4WD Dynojet?

Thanks
 
Old Apr 1, 2008 | 05:07 PM
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New Dynojets are load bearing. find out if this one in particular is. If not pull the shaft out and Bonzai! Directions of how to do this are def on the board search engine.

S
 
Old Apr 1, 2008 | 05:08 PM
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They are not coupled. Do not run the car on a dynojet, period.
 
Old Apr 1, 2008 | 05:38 PM
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Thanks guys but Dynojet is all i have. what is the fastest and easiest way to temporary convert the P Car to a Rear Wheel Drive?
 
Old Apr 1, 2008 | 05:42 PM
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You MAY be able to remove the drive shaft from the front differential. There is a bracket you have to remove and then three bolts connecting the driveshaft to the front output shaft of the tranny. From there you'll have to find a way to move the driveshaft about four inches towards the rear of the car in order to have it come all the way out of the front differential. I am not sure that you can do it this way as there doesn't seem to be anywhere for the driveshaft to go backwards, once its loose. Sorry I couldn't be of more help.
 
Old Apr 1, 2008 | 05:51 PM
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Originally Posted by TXGold
You MAY be able to remove the drive shaft from the front differential. There is a bracket you have to remove and then three bolts connecting the driveshaft to the front output shaft of the tranny. From there you'll have to find a way to move the driveshaft about four inches towards the rear of the car in order to have it come all the way out of the front differential. I am not sure that you can do it this way as there doesn't seem to be anywhere for the driveshaft to go backwards, once its loose. Sorry I couldn't be of more help.
Thank you for your reply,
so i have to remove the under tray cover in order to remove the shaft
 
Old Apr 1, 2008 | 07:04 PM
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Originally Posted by MC Tuner
Thank you for your reply,
so i have to remove the under tray cover in order to remove the shaft
Sadly, yes. i hate it too.
 
Old Apr 1, 2008 | 08:42 PM
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It comes out very easily, once you remove the cover and the three bolts (there are six there but only the three that hold the forward shaft need to be removed. One those three are free wiggle it loose and there is plenty of room to pull it out of the front differential.

Once the shaft is out you certainly can run it safely on a Dynojet. As Stephen mentioned above you do not want to run it in 4WD mode as they are not coupled. Once you undo your front drive-shaft it is a different story, no problem. You may want to leave it out for a while, you may like it. Many do not put it back, and end up removing the rest of the all wheel drive components. There is no harm to the electronics or mechanicals to leave it disconnected, everything works as before.
 
Old Apr 1, 2008 | 10:45 PM
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While you're at it, drive around for a week or two with the Drive shaft removed. 2nd gear will definitely spin counter lock style! You will feel it.
 
Old Apr 2, 2008 | 09:56 AM
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You will likely throw codes with the front diff disconnected, but those are easily cleared.
 
Old Apr 2, 2008 | 10:53 AM
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I never threw any, and drove it on the track for a weekend.
 
Old Apr 2, 2008 | 11:34 AM
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Originally Posted by heavychevy
I never threw any, and drove it on the track for a weekend.
Mine did just on the dyno...please explain why yours did not....I would think that at some point, power would be transfered to the front and there would be nothing there? Wouldn't you get PSM/ABS lights?

Seriously not trying to start anything, just want to learn....
 
Old Apr 2, 2008 | 11:46 AM
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I could just be forgetting but I dont remember any lights coming on especially on the track other than when it normally would have come on, during a slide or hard cornering. But I'm positive it didnt come on when I dynoed it.
 
Old Apr 2, 2008 | 12:43 PM
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The PSM or ABS light almost always comes on when dynoing as the cars ABS senses that the rear wheels are turning at an unsual rate compared to the fronts which are not turning. Every car I have dynoed that has ABS (no matter what the manufacturer) the light will come on. Once off the dyno as soon as you start the car and drive even a few feet it resets the ABS light on its own, there are no codes to clear.

I disconnected my front for 6 months so I could dyno over and over easily and drove it around daily without any codes. You should not get any codes on a 6 speed car.
 
Old Apr 2, 2008 | 01:54 PM
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I'm confused, should you or should you not get codes on a 6 speed when you dyno it?
 


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