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Re: Dunno the answer, but..>
Posted by Brent [Email] (more from Brent) on Wed, 28 Apr 2004 10:19:08
In Reply to: Dunno the answer, but..>, StanleyB, Wed, 28 Apr 2004 08:40:53
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My understanding is that the Eibach springs are about 15-20% stiffer than a stock 9-3, which means that the rear springs are actually softer than a stock viggen. The problem has been finding a kit that has stiffer rear springs than stock. I think that Swedish Dynamics and B&G (the same springs I think) are the only stiffer ones that I could find, and these are only about 3-4% stiffer than the stock rear springs. The other thing is that I autocross the car heavily and have some different requirements from someone that just drives the car hard on the street. The stiffer front springs make the car feel faster and more stable on the street but this does not relate to much faster autocross times. I have found out that the viggen handled much better than the stock 9-3 because of the stiffer rear springs (the fronts are only marginally stiffer to account for a softer swaybar) which reduced the amount of understeer. Changing the springs made the car only slightly faster (the car had more grip but also more understeer which almost cancelled each other out). To match the same ratio with stiffer front springs (30% from a stock 9-3) means that the rears need to be 55% stiffer than a stock 9-3. No one comes even close to this stiff of a spring. Another issue is that the viggen does not appear to have the same drop front and rear for aerodynamic and handling reasons (less weight on the rear). The aftermarket spring kits drop the rear too much. Thanks.
posted by 128.165.15...
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