911SC (Rear)

1. To check riding height, vehicle must be on level floor. Mark center of rear wheel. Jounce vehicle several times to settle suspension. Measure distance "A" shown in Fig 1 . 
   Fig 1: Rear Suspension Riding Height Measuring Points For 911Sc

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Distance "A" plus 1.26-1.65" (32-42 mm) equals "B"; however, distance "B" is difficult to measure because torsion bar is mounted off center in its rubber bushing. Therefore it is necessary to measure distance "B1" and add 0.585" (14.9 mm), radius of bushing. This total should equal "B".
3. After calculating "B", difference between "A" and "B" should be 1.26-1.65" (32-42 mm). Difference in height from left to right should not exceed 0.20" (5.1 mm). If values are not within specifications, check front height and rear torsion bar adjustment. Correct as necessary.

To adjust rear wheel toe-in, loosen nuts on retaining bolts and adjusting eccentrics at rear axle flange. Turn toe-in eccentric until toe-in is set to specifications. Hold eccentric stationary and tighten all lock nuts.