I have RSS atm moment but if I was to do it again it would be Eibach or OEM gt3.

 

Don't fall into the trap of thinking that stiffer bars are better. That is a common marketing ploy used by a lot of aftermarket companies selling "their" special sways. If your suspension is set up properly with the correct spring rates than sway bars are there just to fine tune the suspension to your liking. Running stiff sways is just a bandaid for a poorly set up suspension. With that said, the OEM GT3 bars are what I'd go with. Porsche did their homework there..

 

Anyone familiar with gt2 vs gt3 rear sway cross sectional area or diameter? How could someone choose between them?

 

I have way too much into my suspension and setup to start changing a system that is working very well at this point, but....I wish these would have been available to me when going through the motions:

http://www.tarett.com/items/996-997-...ssy-detail.htm

 

All of these adjustable sway bars kind of confuse me. I don't know the proper setting I should have it put at when installed. I don't even want to mess with it once it's on. I just want to be able to throw the cars in corners without worrying about understeer or body roll. I am used to a stiff ride so unless it's unbearable or uncommonly stiff, I think I'll be ok with that part. For someone like me, what should I buy? A set of GMGs'?

 

Eibach looks like a good option

 

Steve, I thought GT3 front sway bar does *not* fit 997 Turbo; is this not correct?

 

All IMHO here: Sway bar is a great way to tune your car, but it is best used **in addition** to other modifications of the car's suspension, and not as a prime method for firming up the suspension. (My thoughts are similar to pwdrhound's post above).

For example, to primarily reduce body-roll/softness/vagueness in our Turbo, I would not use just the sway bar alone, but would first install stiffer lowering springs or coilovers of your choice. Essentially, the spring/coilover is the prime modification, THEN you use sway bar to fine tune.

GMG sway bar was actually the first component I added to my car. By itself and for me anyway, there was very little improvement that I felt with just sway bar alone. However together with Bilstein, then sway bar's effect could be very easily felt.

Sway bars are used for two primary effects: one, to reduce body roll, two, to affect understeer/oversteer behavior. Depending on each car and use of course, but do keep in mind very stiff setting on the sway bar could cause more harm than good. In effect it counters the "independent" character of our independent suspension. I discussed some more sway bar considerations in the Bilstein thread in my signature. Hope this helps and good luck.

 

Cann, im not sure. i always assumed they were interchangeable. would the front not fit because of geometry ?


edit: Cann, looks like youre right. gt3 sway bars dont fit the front of 996 turbos, so i would imagine it isnt any different with the 997.
the OP might as well just stick to a rear gt3 sway if he can get his hands on one for cheap..

 

Steve, yeah AFAIK the GT3 front sway bar does not fit into 997TT. So if you want to use GT3 bar, you could only change the rear, resulting in a system that is stiff in rear, soft in front (meaning more oversteer, less understeer).

While this method of changing only rear bar works fine for those who use them, because these bars are so cheap, personally I would recommend to change them in pair and use bars made specifically for the Turbo, such as GMG, Eibach, TPC, or H&R, etc (and not other brands). The steering of the stock Turbo is reletively mushy and vague and I've found tightening of the front bar to be of benefit in reducing this vagueness.

 

Yes GMG is a good choice. I would start with either soft front/medium rear, or medium front/medium rear.

There are 2 things you look for in setting your sway bars:
1. Body roll - this is primary function of sway bars for most of us for street driving.
2. Understeer vs. oversteer - this is more important for the track junkies/advanced drivers taking corners at super high speed.
To reduce body roll you stiffen the bar. To reduce understeer you soften the front bar relative to rear, to reduce oversteer, you soften the rear bar relative to front.
You don't want to over-stiffen the sway bars because this would cause loss of compliance and traction for street (and track) driving. I don't like the stiff settings of sway bars for this reason.

Note that if you are looking to improve the handling I would recommend stiff lowering springs or coilover AND sway bar. The sway bar does help but alone is not sufficient to make an improvement IMHO. The springs and spring rates are the heart and soul of a suspension system; to improve handling, you have no choice but to start there, again IMHO.