mdrums

Thanks Tom, I was miss informed my 2 dealers, 1 parts department and a independent Porsche race shop. This is cool info to know.

I ended up using Bilstein Damptronics and have been happy with them.

Tom@TPC Racing

GT3 uprights are not required if you have sleeve adaptors. But you could do GT3 uprights if you have lots of cash. And you'll also need GT3 brakes too because the GT3 uprights offset for the calipers and rotors are different from Carrera S. Been down that road before my friend... It was easier and much cheaper for me to use sleeve adaptors. There is performance advantage by using GT3 uprights but likely none that is noticeable from a track day enthusiast or car club DE level.

Sleeves are tubes that slip over the shock body to increase the diameter. For example, the GT3 shocks are 3mm diameter smaller than Carrera S shocks so you'll need sleeves with 1.5mm wall to build up the diameter so that the uprghts will clamp on to the shocks properly.

Tom@TPC Racing

Yes those are the three items that you need for the front.

PASM cables:
The PASM extension cables are expensive and hard to come by so you could just extend the existing cables using the name gauge electrical wire. There are two wires per cable. I would suggest soldering over using spade or crimp connectors.

Front upper hats:
If you are transferring GT3 shocks & springs to your stock Carrera/S upper mounts I have billet aluminum hats to make this adaptation possible. The other options is to spend more money to buy GT3-type spherical bearing top plates, with racing-type spring hats and associated hardware. These top plates, spring hats, and hardware are available from Porsche or aftermarket source.

Sleeves:
Must have for the fronts in order for the GT3 shocks to fit properly on Carrera/S uprights. Unless you buy GT3 uprights and brakes to go with the shocks.

Keep in mind that stock GT3 shocks & springs have their short comings too, even though they are a little bit more performance oriented than Carrera/S. Trust me on this one. If not, just read the GT3 section of the forum... It is nice to have the threaded body for ride adjustment though. To give you an idea, a Carrera/S will run better lap times with stock shocks & springs using TPC sway bars, DSC, and adjustable rear toe links versus a Carrera/S with .1 or .2 GT3 shocks & springs and everything else stock. We're talking same tires and same alignment specs.

Tom@TPC Racing

You're welcome.

If you end up wanting to change springs you could buy metric size springs from Swift or do what I do, which is turn the size of the perches down on a lathe to use the more readily available 2.25" or 2.5" ID springs.

USMC_DS1

Tom... very informative. Thanks for sharing.

mdrums

Thanks good info...but...I'm putting the stock sport suspension back on probably this winter and selling the Bilstein Damptronics because I don't think I'm keeping my GTS...probably going to be looking into another car next summer.

Tom@TPC Racing

No problem. We discovered all this by testing, swapping parts, and exploring the limits on 8 different 997 platform cars (05 Carrera S, 07 Carrera S, 07 GT3 and RS, 07 Turbo, 08 GT2, 09 Carrera S, and 11 GT3 RS) to find all possible applications for our DSC program. It has been and still is a very interesting journey.

Edit: That would be 10 cars not 8. Forgot about the 10 Turbo and the 10 GT3.

tcsracing1

Excelent!
What i am wondering is if you can do this to a 2007-2009 turbo? If so, do you sell the sleeves?
I have a garage full of GT3 suspension that I would like to use on a 997 turbo.

Tom@TPC Racing

I'll look into it next week. The turbo and c4 have front uprights that position the front shocks at negative castor angle in order to clear the front drive shafts. I have some negative castor angled spring hats but they were made for 70mm ID springs. I'm sure we can come up with a combo to adapt your GT3 shocks but you'll have to change front springs because the turbo/c4 upper mounts won't allow for smaller ID springs and hats. You would want to change front springs anyway because the turbo is too nose heavy for GT3 front springs especially if they are .1 springs!

GixxerGino

Thanks Tom!

I knew this was possible, I just needed you to get my back..

AWay

Tom, could you elaborate on the DSC boxes? Is this something one can plug into their existing PASM and have it perform differently? First I've heard of this. Thanks!

Tom@TPC Racing

You are welcome Sir!

tcsracing1

I have Bilstein B16 Damptronics. Would that help?

Tom@TPC Racing

Sure. DSC is a direct plug-in replacement for the stock PASM box(control module). DSC stands for Dynamic Suspension Control, it is a fully active controller, whereas the stock PASM controller is semi-active. In the Carrera S, stock PASM Normal mode is too soft which causes the car to "float". And in Sport mode the ride is so stiff that it over loads the tire contact patch easily. DSC eliminates the floating and the harness over bump, greatly reduce excessive front drive under braking, and reduce body roll when cornering. All of this is achieved by DSC having much wider range of control over any stock PASM shocks or Bilstein Damptronic shocks.

For the 997.1 Carrera/S a 3-axis accelerometer is required. The .1 cars came equipped with 2-axis accelerometer. The .2 cars came with 3-axis.

Here are some reviews of DSC on street and track from other forums. Different cars but same working principles.

http://www.6speedonline.com/forums/9...ension-12.html

http://www.planet-9.com/news-items/9...e-987-2-a.html

http://www.planet-9.com/news-items/9...987-2-a-5.html


I have installed DSC on a .1 Carrera (post #196) and on my .1 GT3(post # 204).
https://rennlist.com/forums/997-gt2-...07-gt3-14.html

Edit: Sorry to go off topic here.

Tom@TPC Racing

Do you have a set of B16 coilovers for a GT3 that you want to put on a Turbo?
Or do you have a set of OEM GT3 coilovers that you want to put on a Turbo that currently has B16's?