To those that have installed Rear Coilovers (Tein / Tanabe)... when you did the "install", do you just leave the "original" Spring Bucket empty ? Or do the Rears
have "separate" Coils and Shocks ?
...thanks for the info. in advance !!

 

there are only a few companies that make true coilovers for the g35 and 350z. tein and tanabe are not one of them. they use the orginal spring location in the rear. if you are lookin for a true coilover setup, check out the stance coilovers.

 

Great Info. !
...thanks again.

 

From SPL:

A very common setup for aftermarket coilovers is to use a "true" coilover setup on the rear of the 350Z/G35. For such setups, the spring is relocated from its stock location on the rear mid link (the cast aluminum arm) onto the rear shock. The advantage to this setup is the simpler packaging (since manufacturers can use more readily available standard ID race springs). However Nissan designed the car with the spring separate from the shock for several technical advantages:

Springs never compress perfectly straight, they have a tendency to bow slightly when compressed. When the spring is placed over a shock body, this introduces side load to the shock piston, increasing friction and reducing the effectiveness of the shock.

The rear suspension is designed to gain camber as the suspension compresses. Since the rear shock is attached to the rear spindle near the top, this means that the angle between the shock and the chassis changes as the suspension compresses; due to the camber gain, the top part of the spindle will angle in more as the suspension compresses. Therefore, if a spring is mounted on the shock, the force exerted by the spring is applied to the chassis at the same angle, this means that the spring rate effective changes as the suspension travels. In comparison, the spring acts more linearly when mounted on the stock location (rear mid link).
Therefore, for better handling, it is desirable to have the spring in the stock location.