Adjusting the height at the rear can only be done by moving the spring plates of one or more teeth on the torsion bars, it is not only a difficult job but once you have finished and you are not satisfied with the final result, you can start again. Moreover, you are limited to the number of teeth, a small height adjustment is not possible. With these infinitely adjustable spring plates, you have complete freedom and can adjust the height in no time at all.
With these adjustable spring plates, it is also necessary to replace the torsion bar rubbers with urethane rubbers (see options tab). The inner rubber needs a different size from what is fitted as standard and it makes sense to replace the outer rubber for the urethane as well, here too the size may be different from what is fitted originally. In addition, it is also advisable to replace the torsion bar covers immediately, as these may also differ from those originally fitted.
Some people use the torsion bars of a swing axle for an IRS suspension, where your axle no longer protrudes from the torsion bar cover but is locked as it is with a swing axle. This system is particularly popular with Buggy and is mainly used to improve its appearance without the protruding axles.
Caution : Only in the IRS, the central mounting slot does not correspond to the original support arms. Place your old spring plate on the adjustable plate, mark the hole and drill or countersink an additional hole in the spring plates. These adjustable spring plates are widely used in off-road racing, where the original support arms are not used, but reinforced arms with the centre hole in the right place.
If fitted to a Volkswagen Beetle or Karmann Ghia from before July 1959, it is necessary to remove the lumps from the urethane interior rubbers.
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