Rear Subframe Bushing Wear
Symptoms
Clunking from the rear over bumps. Vague rear-end feel. The rear end feels "loose" or unstable, particularly during transitions (changing direction).
Cause
The rear subframe is mounted to the body with rubber bushings that wear with age. The Silvia's relatively light unibody is stressed at these mounting points, and the bushings deteriorate faster if the car has been driven hard.
Fix
Replace the rear subframe bushings.
Polyurethane or solid bushings are available: $100-250 for a set.
The job requires supporting the rear subframe, lowering it slightly, and pressing in the new bushings.
Labour: 2-4 hours.
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