torsion bars
09-01-2001, 03:02 PM
#1
5th Gear
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Join Date: Sep 2001
Location: Atlanta, Ga
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torsion bars
I have gotten the bug harder than normal after the last De on Road Atlanta. I want tighten the car up a little more than my sport shocks, turbo tie rods and Strut brace have accomplished. I want to add larger torsion bars front and rear and then do my final tuning using an adjustable sway bar. Before I start I need help, does anyone know the stock front/rear sizes on torsion bars for a 1988/911/cab ? Are they different than coupes ? I've been told that I should not be using a cabriolet for the track but the weekend use more than makes up for lost performance. I can sure use some advice on the right setup for torsion bars front and rear that won't totally destroy this car for the occasion sunday drives. ???
09-01-2001, 03:15 PM
#2
RL Technical Advisor
Hi:
Your 88 Carrera comes with 18.8mm front torsion bars and 25mm rear ones.
We have had great success installing 22mm front and 29mm or 30mm rear torsion bars in these cars along with a pair of TRG 22mm adjustable swaybars for street & track use without reuing the ride quality.
This package really reduces the squat, dive, and sway of the OEM suspension and permits you to adjust the understeer-oversteer balance of the car to your skills and preferences.
Provided that these things are installed properly and the car is corner-weighted, and aligned by competant people, the handling changes are quite dramatic.
Your 88 Carrera comes with 18.8mm front torsion bars and 25mm rear ones.
We have had great success installing 22mm front and 29mm or 30mm rear torsion bars in these cars along with a pair of TRG 22mm adjustable swaybars for street & track use without reuing the ride quality.
This package really reduces the squat, dive, and sway of the OEM suspension and permits you to adjust the understeer-oversteer balance of the car to your skills and preferences.
Provided that these things are installed properly and the car is corner-weighted, and aligned by competant people, the handling changes are quite dramatic.
09-01-2001, 10:55 PM
#3
Technical Specialist
Rennlist
Lifetime Member
Rennlist
Lifetime Member
I have 22mm/29mm torsion bars in my 81SC coupe, adjustable sway bars, and the other hardware you have. I find it a comfortable daily driver and very competent on the track. You'll be amazed at the difference larger torsion bars make. Now that you're going down the path to the dark side....start keeping an eye out for a second pair of wheels you can mount DOT approved "R" compound tires on. That provides a quantum leap in stick.
Of course, you've probably already considered that before you can go fast, you have to be able to go slow. So you flush your brake fluid frequently, use ATE blue/gold or some other higher-than-average boiling point brake fluid, have perhaps already removed the front brake backing plates, maybe have installed a cool brake-type kit to get cooling air to the front rotors, perhaps already upgraded your brake pads to a street/track pad like Peformance Friction "Z" rated pads, or there are several others, or even Pagid Oranges work fine with limited-to-no squeel in the single piston per side calipers on the pre-89 911's.
Of course, you've probably already considered that before you can go fast, you have to be able to go slow. So you flush your brake fluid frequently, use ATE blue/gold or some other higher-than-average boiling point brake fluid, have perhaps already removed the front brake backing plates, maybe have installed a cool brake-type kit to get cooling air to the front rotors, perhaps already upgraded your brake pads to a street/track pad like Peformance Friction "Z" rated pads, or there are several others, or even Pagid Oranges work fine with limited-to-no squeel in the single piston per side calipers on the pre-89 911's.
09-04-2001, 09:57 PM
#4
Instructor
If you have got the bug. you seriously might want to consider a coupe before you spend a lot of money on your cab. I know you like the cab, but the coupe will be a much better choice for an auto-X or D.E. car. The cabs have too much flex an with stiff torsion bars it will be worse. If you start driving the car hard and alot it will compromise the body. Just something to think about before you start. The combo that Steve mentioned will work very well on the cab or a coupe. If you have any questions please fill free to e-mail me. I own a porsche repair and race shop in the Atlanta area. I am also in the Peachstate presse,look for International Performance Center.(IPC) Have Fun!