Notices
Brakes & Suspension 350Z stoppers, coils, shocks/dampers
Sponsored by:
Sponsored by:

Bouncy 2003 Nissan 350z

Old 10-31-2017, 10:34 AM
  #1  
Sulaman Abdul
Registered User
Thread Starter
 
Join Date: Oct 2017
Location: canada
Posts: 1
Received 0 Likes on 0 Posts
Smile Bouncy 2003 Nissan 350z

Hey so I just recently purchased my first 350z and I absolutely love driving this beast. I have owned it for about 3 weeks now and the suspension is super bouncy, a soft kind of bounce and it can get pretty bad in high speed if i go through a little bump. I don't know a lot about suspensions but from what i've heard its my shocks that are done. I searched up some shocks for my car and found KYB Excel-G twin tube struts any opinions on how well it performs? I am just looking to ride smoother and a bit stiffer since the bounces some times turns my slip light on the dash. I am on somewhat of a budget since I am in Uni and cant afford the best products out there
when i bought the car it came lowered, I am not sure if its on lowering springs or cutted springs. definitely not coil overs.
and another thing my seat slides back wards, reclines back and forward fine but the forward slider doesn't work any suggestion?
Thanks!
Sulaman Abdul is offline  
Old 10-31-2017, 11:30 AM
  #2  
iideadeyeii
Registered User
iTrader: (6)
 
Join Date: Nov 2011
Location: Lawtown
Posts: 2,883
Received 228 Likes on 181 Posts
Default

Get stock suspension. It's most likely bouncing due to cheap aftermarket coils
iideadeyeii is offline  
The following users liked this post:
Sulaman Abdul (11-02-2017)
Old 10-31-2017, 05:08 PM
  #3  
Spike100
350Z-holic
 
Spike100's Avatar
 
Join Date: Dec 2006
Location: Edina, Minnesota
Posts: 7,149
Received 163 Likes on 140 Posts
Default

If your budget is tight, replace the springs.

If you have more room in your budget, replace the springs and the shocks.
Spike100 is offline  
The following users liked this post:
Sulaman Abdul (11-02-2017)
Old 11-01-2017, 12:24 PM
  #4  
terrasmak
Super Moderator
MY350Z.COM
iTrader: (8)
 
terrasmak's Avatar
 
Join Date: Jan 2007
Location: Sin City
Posts: 25,520
Received 1,110 Likes on 814 Posts
Default

Look at the springs and see if you can see a name on them. Post pics of them if you can
terrasmak is offline  
The following users liked this post:
Sulaman Abdul (11-02-2017)
Old 11-02-2017, 06:30 AM
  #5  
Atreyu'z 350
Registered User
 
Join Date: Jan 2017
Location: Pennsylvania
Posts: 1,908
Received 247 Likes on 216 Posts
Default

It sounds like your shocks have lost their dampening ability. Is the problem at all four corners, or specific to one area?(front, back, left or right) - Try pushing down on each corner independently with slight force. It should bounce back up, then settle; not bounce one more cycle. Since you're on a budget, I also think you should go back to OEM. It's better to spend a couple hundred on OEM than be forced to buy from the cheaper end of aftermarket for the equivalent price. As far as your seat, I'm not too sure. The sliding rail could be bent or pinched, limiting its forward movement. Look under there with a flashlight and check it out. It's hard to say from here.
Atreyu'z 350 is offline  
The following users liked this post:
Sulaman Abdul (11-02-2017)
Old 11-02-2017, 07:29 AM
  #6  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,144
Received 2,021 Likes on 1,456 Posts
Default

You didn't mention how many miles on the shocks/car.

I mentioned this about a week ago in another thread:

"...if you're on stock '03 suspension, bear in mind that Nissan screwed the pooch (excuse me for that... only way to describe) on the '03-04.5 shock/spring combination. Very "jolty" and not at all a balanced nor smooth ride. That was corrected in '04.5 models forward as they either softened the shocks or altered the spring rate (can't remember exactly which)."

To support EYEgor 350's (Atreyu'Z) comment and based on this fact, the BEST solution for your '03 is to replace both shocks AND springs. HOWEVER, if budget doesn't allow this, replace the shocks only as they are the single biggest influencing factor on the ride quality (or lack thereof.) Keep in mind that the shocks' sole duty is to control the spring oscillations.

Replacing the springs only will do little to improve the ride if the shocks are bad. But, as terrasmak mentioned, try to identify or post pics of the springs because if they are not original, they may be overly stiff aftermarket units... in which case, new shocks will help only marginally.

On your considered choice of KYB GR-2s (AKA "Excel-G", same shock), well, couple of things... these are "stock replacement" quality only. They will help "some" if you are on OEM springs. They are NOT meant to be paired with aftermarket lowering/high rate springs and will not last if pushed beyond design limits.

A better choice - within a higher but still relatively reasonable price range - are Tokico HP (AKA Tok "Blues") shocks. These are designed from the get-go as performance replacements which work fine with both stock and aftermarket springs. They are also specifically valved for the Z. There's only about an $80-100 difference between them (based on a quick check of one of our vendor sites.) Personally, if this were me, I'd wait and save up for the Blues as this choice today will carry you many years for better/worse.

PS By the way, the "bounce test" prescribed in this thread is largely a myth (or at least way outdated). Strut type suspensions all "feel" OK when doing this because of high spring rates to start (vs. "conventional", really old school non-indep coil/leaf/torsion bar suspension like on a '68 Dodge Dart..heh heh). Only thing the bounce test is good for on a Z is testing the strength and elasticity of your fenders. Laff......

Last edited by MicVelo; 11-02-2017 at 07:37 AM.
MicVelo is offline  
The following 4 users liked this post by MicVelo:
Atreyu'z 350 (11-02-2017), photo2u (01-14-2018), Spike100 (11-03-2017), Sulaman Abdul (11-02-2017)

Thread Tools
Search this Thread

Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: