Yeh, to clarify further, it's like this on the S-techs over stock dampers:

Front - underdamped, car undulates over bumps/humps especially when on
one side of the car. the positive caster is amplified causing the car to squirm when
going over large bumps/humps making the car unstable (makes your car feel like
it's shifting left/right going over bumps on one side of the car).

Rear - not underdamped, but spring rate too soft to extend the rear sus fast enough
to bring the car flat to where it's suppose to be...making the car feel very sluggish.

 

Did Hotchikis ever fix their design to include the collars on their swaybars?

If not, stay away from those and get the Stillens. Your swaybars are
going to be sliding left/right without those collars and it will be a pita
later on. the stillens are already welded on and they are excellent,
and damn inexpensive!

 

The Stealin's have the collars on their swaybars, but supposedly they require new bushings.

 

This describes exactly how my car feels right now.

 

 

Thanks for the heads up.

 

naw, Im using my factory bushings. See how worn out your factory ones
are and if they are, just get some from your dealer or go urethane.

 

I had a bad experience with Stillen's on my Maxima. I had 6,000 miles on my bushings at that time, and I ended up buying polyurethane bushings, which cost double the price of new collars for the Hotchkis.

I am deciding between the Hotchkis bars and the 350evo bars.

 

yep, do what you need to do.

 

Thx Ken! Just have to figure out what setting for the D specs and how stiff to set the stillen sways! Got this setup on my list to order.

 

Just realized their's a lot more to say.

Springs absorb bumps, hold the car up, set the CG, and offer increasing or decreasing resistance to roll depending or how stiff the springs used are. And let's not forget since he is one aftermarket springs, what about that springs design may be a factor in his feelings? What about the oem setup that was right for him? The best setup's on these car's use spring rates that are high enough to maintain tire contract, avoid excess camber gain and fine tuned with adjustable sway bar settings. Setup the car up right the first time around with springs, then fine tune with sway bars. Do not use sway bars to overcome ingnoring proper setup laws. Doing so creates a situation where excess roll resistance by the sway makes the cars suspension no longer compleately independent. On the bumps that exist in real life off smooth as glass track surfaces this means the car will dart and try to follow bumps, you'll know it's going on as your head is tossed side to side. {see page 67 last paragraph Carroll Smith's book "Tune To Win"}

 

Since you've mentioned performance, avoid the Eibachs, they will not take the car in the direction that your after, they will introduce a lot of weight transfer issues including yawing and pitching. The 350Z H-tech's are a better choice. Though I can tell you from experience that the oem sedan sport shocks do not have enough rebound control in the rear, but you are saying your going to go with D-specs anyhow.

I would still like to know the part number off one of your rear oem shocks and the color the the dot's on the rear oem springs, can you please find out?

 

gsedan35- the fundamental problem with GruppeS's post is that he doesn't seem
to have much experience (or experimentation) with our cars... more of a
spec sheet modifier type comments from this guy.

Until he's actually tried these setups and played around with it, he will never
know what the customers are complaining about.

Also, before anyone goes out buying springs to mimic my setup, note that my
G35C is setup for dressup, comfort, and handling in that order. It is
my weekend street cruiser where Im just touring around town in, do very
limited spirited run through some entrance ramps and in the forest twistes,
that's it. Most of the time, Im kicking back enjoying the torque of the motor
and exhaust note just driving mildly.

 

I currently am having the same problems with my sedan. In addition to rubiing I think i will try and get ahold of some 350 Z h-techs for my rear also.
https://g35driver.com/forums/g35-sedan-v35-2003-06/60130-tein-h-techs-issues-rubbing-how-get-rid.html

 

will - if you don't have aftermarket dampers like the D-Specs, try that first.
You might be able to salvage your springs and just finish off using a swaybar.