300ZX Frame Bushing Repair

Z31 model repair manual

The 300ZX frame bushing repair was surprisingly the hardest repair I ever performed on my two-door Nissan sports car. The rear suspension on the 300ZX z31 model is quite complicated and very different than your average American car.

The rear suspension is completely independent. And out from the differential are rear CV axles. The rear suspension is completely adjustable including rear Castor, camber and toe as well. In fact negative camber is often seen on the older models due to coil spring sag. This can cause tire wear as well as poor handling.

My problem with the rear suspension was the right rear frame bushing deteriorated from dry rot and completely let loose. This is a major supporting point for the rear suspension and is largely responsible for holding everything together back there. Note that in the Nissan service manual they called this item a sub frame member insulator.

Repairing the 300ZX frame bushing

I will include some pictures of what the z31 rear suspension looks like (below) on this type of car. But take my word for it this repair was completely necessary. The rear frame bushing Read more