Replacing the Saab 9000 Rear Anti-roll Bar Bushes
The Saab 9000 is fitted with front and rear anti-roll bars (sway bars). Their
purpose of these is to tend to keep the left-hand and right-hand wheels level
during cornering. This action depends on both the torsional stiffness of the
anti-roll bar and the rigidity of its mountings. The standard rubber mountings
are far from rigid and I purchased polyurethane replacements from SuperFlex
in the hope of improving the anti-roll characteristics.
The result of replacing the rear anti-roll bar bushes on their own (without replacing the front anti-roll bar bushes) was much more marked than expected. The car's tendency to understeer is much reduced, making the handling more neutral and allowing slightly higher cornering speeds. The first time I took a roundabout at speed, I almost touched the central kerb since the understeer I was so used to had gone, while I was still expecting to have to "tug" the car round.
I am led to believe that performing the same modification to the front anti-roll bar will re-introduce understeer.
This procedure documents removal and replacement of the rear anti-roll bar bushes.
About 20 minutes: 5 minutes to jack up and remove the wheels, 5 minutes for each bush and 5 minutes to refit the wheels and lower the car.
I assume some basic tools, such as a jack, axle stands, socket set, etc. However I do not assume you will already have all the necessary metric socket and spanner sizes, especially if you are in the USA. Here is a list so you can make sure you have all the necessary sizes before you start.
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and is not in any way affiliated with Saab Automobile. A big "thank
you" to Saab for producing the 9000.
All information is presented in good faith. However, I am not a trained mechanic, just an enthusiast.Therefore, it is your responsibility to ensure that you are competent to carry out any procedures presented here and that they are correct. No responsibility can be accepted for any inaccuracies or consequential loss, injury or damage.
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