Hi Guys,

I hope you are all doing fine,

I have a 2007 350z, with the following setup:

1- Tein Super Street with EDFC.

2- Stock sway bars.

3- Full GT-Spec Chassis braces.

4- Cusco 7 point roll-cage

5- Volk FR 19x9.5, RR 19x10.5

6- Tires FR Mich PS2 255/35 37psi
RR Mich PS2 295/30 37psi

7- Spc camber kit with toe bolts

everything else on the car is stock, all these parts were installed when the car had only 4000miles except for the Spc camber kit which was installed around 10000miles ago, and now the car has 53000miles, the car handling was nice and i was very pleased with it but suddenly a problem came and ruined my pleasure,

Alignment is perfect the car doesn't have any play in the steering wheel, no wheel vibrations even at speeds of 150 miles and it doesn't sway left or right at any speed what's so ever

Symptoms of the problem:

when driving at speeds above 60 miles, and i start turning the steering wheel quickly left and right the car wiggles in such away that gives you a feeling that it drives with out sway bars especially when you suddenly center the steering wheel, it takes the car body a second for the wiggle to stop.


the thing is for the last 3 months i stopped driving the car and when I started driving it last week i felt this strange issue, and the reason i drove the car last week is to go to a shop to install the Greddy Dual Ti-c and i felt the issue in the way back home, now i don't know if the issue happened because the shop accidentally did something during the installation, i did go back to the shop and we checked every single suspension link visually every thing seemed fine.

For sake of comparison because i might be hallucinating, i give my Z to my friend and i took his Z which is a 2008 with stock sus, he has only Tein S.techs in the rear, his car felt much stable.

And thanks alot guys for your help in advance.

 

LCA bushing would be my bet, jack it up and look at them.

 

i actually did that with the mechanic and visually they seemed fine, do i need to take them out to be sure

 

i have felt this before and my fix was this, check the rear drive axle stub nuts, my drivers side was pretty loose and gave me that exact feeling, luckily the cotter pin stopped it from spinning off totally. I recommend taking the nuts off and clean em up and put some loctite on em and torque them back to proper spec and put cotter pin back in. If you are really **** you should replace the nuts then put loctite on them. I believe nissan states thats a one time use nut.....
hope this helps

 

Hmmm,, i'll check that indeed, thanks dude

 

no problem man, hope this is your issue

 

Checked all bolts and bushings in the back and front visually nothing looks odd

 

steering rack bushings? steering rack leaking at all?

-J

 

i had the same prob if all the stuff you checked was good then i am betting its your alignment. u thught my alignment was good when they finished and as soon as i drove off i switched lanes and felt the car kick out its just like you said its like the car had no swaybars... you will be surprised if the alignment iff off by a little it will do this.. its mainly the toe. take it and get another alignment.....

 

i agree, a new alignment and get back to us..

-J

 

nice coil over suspension on crappy stock sways.


53k on those junk rubber sway bar bushings probably means they are dying. The rubber wears and gets sloppy. Either put some polyurathane bushings and endlinks or swap the sways out for nicer ones with the PU bushings and end links