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

Picking the right suspension for your performance needs.

Old 07-26-2014, 12:50 AM
  #21  
KingBaby
Hardest Setting
iTrader: (3)
 
KingBaby's Avatar
 
Join Date: Feb 2008
Location: MexiCali dodging potholes
Posts: 13,420
Received 122 Likes on 95 Posts
Default

Originally Posted by Emski View Post
You relocated the mounting points of the arms?
Negative megatron, I haven't reach the level of Garage Scientist yet...just the inner fender has been trimmed away
KingBaby is offline  
Old 07-26-2014, 04:29 AM
  #22  
terrasmak
Super Moderator
MY350Z.COM
iTrader: (8)
 
terrasmak's Avatar
 
Join Date: Jan 2007
Location: Sin City
Posts: 25,463
Received 1,097 Likes on 804 Posts
Default

Originally Posted by KingBaby View Post
Negative megatron, I haven't reach the level of Garage Scientist yet...just the inner fender has been trimmed away
The geometry of the arms will be way out of wack
terrasmak is offline  
Old 09-13-2014, 09:14 AM
  #23  
kilogram
Registered User
iTrader: (1)
 
kilogram's Avatar
 
Join Date: Sep 2013
Location: Arvada, CO
Posts: 233
Likes: 0
Received 9 Likes on 6 Posts
Default

The geometry of the arms will be way out of wack
Pretty much. Loss of travel isn't nearly as bad as putting the arms in the portion of their travel where they gain significantly more camber than the degree to which the car is rolling. Watch a lowered 2g dsm on the highway once and see how much camber the wheels gain even on small bounces... This is bad for cornering, but it also castrates the car under acceleration and braking since it's trying to generate force using only the inside edges of the tires.

Has anyone on here mapped the pickup points and run the numbers through an analysis program like susprog3d or the like? Seems to me it would be useful to know what is actually happening when we lower the car. We did it with the MR2 suspension (granted, it's a much simpler suspension) and found not only the point of diminishing returns on lowering, but also found a few minor tweaks that improved the stock setup. I'll have to talk to the FSAE guys at school and see if they have any of the higher level suspension programs like Milliken..
kilogram is offline  
Old 09-16-2014, 02:26 AM
  #24  
350Zdj
Registered User
iTrader: (3)
 
350Zdj's Avatar
 
Join Date: Aug 2008
Location: Dubai
Posts: 1,915
Likes: 0
Received 4 Likes on 4 Posts
Default

I have not seen any in-depth reviews/discussions or positive reports on here regarding the Megan Roll Center Adjusters.

My car is lowered like 1.2" and adjustable camber/toe kits all around.

I am wondering if this would help us with the lowered ride height

http://www.meganracing.com/product.a...d=850&catid=26
350Zdj is offline  
Old 09-19-2014, 12:34 PM
  #25  
kilogram
Registered User
iTrader: (1)
 
kilogram's Avatar
 
Join Date: Sep 2013
Location: Arvada, CO
Posts: 233
Likes: 0
Received 9 Likes on 6 Posts
Default

Originally Posted by 350Zdj View Post
I have not seen any in-depth reviews/discussions or positive reports on here regarding the Megan Roll Center Adjusters.

My car is lowered like 1.2" and adjustable camber/toe kits all around.

I am wondering if this would help us with the lowered ride height

http://www.meganracing.com/product.a...d=850&catid=26
The problem I've seen with RCAs is that they rarely correct the roll center without butchering bump steer. If you move the pivot point of the lower arm, you need to move the pivot of the toe arms to match or you start inducing weird bump steer characteristics. I wouldn't put them on the car unless you could predict exactly what they'll do.

On that site, Megan also describes roll center correction for macpherson strut suspension. You can't "correct" the roll center on a-arm suspension just by moving the lca outer pivot. It will MOVE the roll center, sure, but it also changes the length of the virtual swingarm which has serious effect on the camber curve. The reason RCAs are so effective on a mac strut suspension is because the strut is effectively the upper control arm**. Moving the single pivot point can put the roll center back to where it was before the car was lowered. It still screws up the bump steer curve, and that needs to be addressed before it's an effective "correction."

**That's actually the difference between "shocks" and "struts-" a strut actually controls the motion of the knuckle. The Z uses shocks, not struts- even on the front. I don't know how many times I've read the term used as if it were interchangeable when it's not. Struts are not just coil-over shocks, they act to define the motion of the hub.

Last edited by kilogram; 09-19-2014 at 03:32 PM.
kilogram is offline  
Old 02-19-2016, 02:35 AM
  #26  
gotama
Registered User
 
Join Date: Nov 2015
Location: /
Posts: 48
Received 0 Likes on 0 Posts
Default

Hey all, I hope im posting in the right thread. Basically I want to pick the right suspension for my FI setup which will be done next year. First I will be running about 400-450 whp. For this power band (correct me if im wrong) I guess this should not have a major impact on the car's handling/cornering 3rd gear onwards.

However the following year I will do a full engine build and will be running 600whp. Here i need to do some changes with my suspension, brakes and tyres.

With regards to suspension what suspension mods would you guys reccomend ? By the way my Z will not be lowered (standard chassis clearance).

Cheers
gotama is offline  
Old 02-19-2016, 11:00 AM
  #27  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,984 Likes on 1,435 Posts
Default

Originally Posted by gotama View Post
Hey all, I hope im posting in the right thread. Basically I want to pick the right suspension for my FI setup which will be done next year. First I will be running about 400-450 whp. For this power band (correct me if im wrong) I guess this should not have a major impact on the car's handling/cornering 3rd gear onwards.

However the following year I will do a full engine build and will be running 600whp. Here i need to do some changes with my suspension, brakes and tyres.

With regards to suspension what suspension mods would you guys reccomend ? By the way my Z will not be lowered (standard chassis clearance).

Cheers
The first thing one needs to do to get any real advice on this is to:

DEFINE your driving habits, how you drive and where.

Secondly, be honest about your skills. Handling 500+ ponies isn't just how fast you can catch the wheel. It doesn't matter if you have 287bhp or 600bhp and a suspension system if ya can't handle it. (NOT suggesting anything about your skills, just a necessary preach.)

I would say "driving school" but people make fun of me. Heh heh.

Once that's all done, you can start making choices about hardware.

The mandatories:

1. Good tires. Light wheels optional.

2. Good alignment. (Between each step...
pays to get one of those "lifetime alignments" at a good shop.)

3. Anti-sway bars - preferably adjustable to match your venue of choice, abilities, and a way to tune your chassis

That's it for mandatory stuff.

The optionals - depending on need:

4. Good shocks - - If your originals or whatever you already have need replacing, go for new ones. If you track occasionally, consider adjustables, e.g. Koni Sport ("Yellows") OR...

...If you are a serious track junkie then consider a good set of coilovers for the full adjustability of height, jounce, rebound - and be ready to learn how to (and/or invest in) corner balance/weight jacking. Bilstein, Stance, KW, etc... your choice.

5. Adjustable alignment components - mandatory if you are that serious track junkie, above - but mostly for specific alignment tuning to suit a track, racing wheels/tires, or just to save tires on the street. SPL, SPC, Kinetix, to name a few.

6. Springs - if you have exhausted the capabilities of your stock set-up (and don't go with coilovers) then MAYBE springs depending on your need for eventual lowering (or not) and increasing roll stiffness to keep your spoiler off the ground. Haha.... but more for chassis tuning.... and unless you buy a set of Bilsteins (best all around shock) which are non-adjustable, you'll definitely thank me about getting adjustable shocks to tune for the springs, wheel and other unsprung weight, etc.

Did I mention "good alignment"? (I know I did.) But, this is CRITICAL for ANY suspension set up to work properly. And necessary between EACH step. Seems trivial but there is NO BETTER WAY to maximize whatever you're using.

That's it. Nutshell.

Mic

PS You'll note, I said NOTHING about the suspension's relationship to horsepower. It's not about that, it's about getting the most out of the car whether it's stock or pumped full of positive air pressure.

Last edited by MicVelo; 02-19-2016 at 11:04 AM.
MicVelo is online now  
The following 3 users liked this post by MicVelo:
gotama (02-20-2016), sohel (06-10-2016), Spike100 (02-19-2016)
Old 02-20-2016, 12:42 AM
  #28  
gotama
Registered User
 
Join Date: Nov 2015
Location: /
Posts: 48
Received 0 Likes on 0 Posts
Default

thx for awesome info. First of all I am a newbie when it comes to z car mods as ya probably noticed should have said this earlier :P Mainly I drive in the street and very rarely some 1/4 mile drags. Sadly in my Country (Malta) we have no track. Would be great to tune the car for track driving.


So basically in my case (for street faster cornering) apart from the mandatory things from the points mentioned above, how else can I do improve grip & handling ?


Would wider tyres help rear wheel grip on low gears & would they help with speeding faster through corners ?
if yes, what is the maximum width I can go for (front & rear) without having fender rubbing issues ? (on standard stock suspension). 19's (profile 30)

Cheers

Last edited by gotama; 02-20-2016 at 12:46 AM.
gotama is offline  
Old 02-20-2016, 12:51 PM
  #29  
terrasmak
Super Moderator
MY350Z.COM
iTrader: (8)
 
terrasmak's Avatar
 
Join Date: Jan 2007
Location: Sin City
Posts: 25,463
Received 1,097 Likes on 804 Posts
Default

Stock suspension would probably fine for your needs. Cruise over to the wheel and tire section for your wheel and tire needs. A 305/30-19 on a 19x11 will easily work with a roll.
terrasmak is offline  
The following users liked this post:
gotama (02-21-2016)
Old 02-21-2016, 01:17 PM
  #30  
gotama
Registered User
 
Join Date: Nov 2015
Location: /
Posts: 48
Received 0 Likes on 0 Posts
Default

cheers

Last edited by gotama; 02-21-2016 at 01:35 PM.
gotama is offline  
Old 02-21-2016, 01:37 PM
  #31  
gotama
Registered User
 
Join Date: Nov 2015
Location: /
Posts: 48
Received 0 Likes on 0 Posts
Default

Originally Posted by terrasmak View Post
Stock suspension would probably fine for your needs. Cruise over to the wheel and tire section for your wheel and tire needs. A 305/30-19 on a 19x11 will easily work with a roll.
by the way what is a roll ?


thx
gotama is offline  
Old 02-21-2016, 03:48 PM
  #32  
travlee
Master
iTrader: (8)
 
travlee's Avatar
 
Join Date: Jul 2011
Location: Texas
Posts: 37,783
Received 5,942 Likes on 4,095 Posts
Default

Originally Posted by gotama View Post
by the way what is a roll ?


thx
travlee is offline  
The following users liked this post:
gotama (02-22-2016)
Old 02-22-2016, 03:48 AM
  #33  
gotama
Registered User
 
Join Date: Nov 2015
Location: /
Posts: 48
Received 0 Likes on 0 Posts
Default

awsome. thx
gotama is offline  
Old 05-27-2018, 05:39 AM
  #34  
travlee
Master
iTrader: (8)
 
travlee's Avatar
 
Join Date: Jul 2011
Location: Texas
Posts: 37,783
Received 5,942 Likes on 4,095 Posts
Default

Originally Posted by Wet feet View Post
Hey, are you willing to sell just the Tokico, or only as a package? I already have Tein S springs.
dont think you will be happy with s-techs, i had them and dumped them within a year.

Originally Posted by travlee View Post
dont think you will be happy with s-techs, i had them and dumped them within a year.
Do you mean in general, or in combo with the Tokico? I canít go that low where I live, crappy streets. In fact, I just had the bottom of my car tore up by the rollers at the state inspections, wheel to wheel under the doors, and they said they wouldnít pay! Aside from that, on my spirited drives so far, together with the WL sways, it feels pretty incredible. You think the above springs are better?

Last edited by MicVelo; 05-27-2018 at 06:08 AM.
travlee is offline  
Old 05-27-2018, 06:16 AM
  #35  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,984 Likes on 1,435 Posts
Default

Sorry, comments above supposedly by Travlee are actually from Wet feet. (I fat fingered the move. My bad.)

Wet feet was asking about why Trav said the S-Tech were "no good"...
MicVelo is online now  
Old 05-27-2018, 06:35 AM
  #36  
Wet feet
Registered User
 
Wet feet's Avatar
 
Join Date: Jul 2017
Location: Costa Rica
Posts: 77
Received 1 Like on 1 Post
Default

Thanks MicVelo!
Wet feet is offline  
Old 05-27-2018, 07:25 AM
  #37  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,984 Likes on 1,435 Posts
Default

Originally Posted by Wet feet View Post
Thanks MicVelo!
NP.

I'm curious as to why Trav said that too. Most everyone I see that comments on the S-Techs seem to be positive about them. H-Techs maybe not so much but S-Techs...
MicVelo is online now  
Old 05-27-2018, 07:43 AM
  #38  
Wet feet
Registered User
 
Wet feet's Avatar
 
Join Date: Jul 2017
Location: Costa Rica
Posts: 77
Received 1 Like on 1 Post
Default

Originally Posted by MicVelo View Post
NP.

I'm curious as to why Trav said that too. Most everyone I see that comments on the S-Techs seem to be positive about them. H-Techs maybe not so much but S-Techs...
Yeah, after reading that Iíve literally spent the last 2 hours drinking coffee and reading up on springs/suspension all over again!
My limited experience with the Tein so far has been positive. Usually with the wife in the car I canít take corners/curves as aggressively as Iíd like, but last week we took a very spirited drive up a curvy, scenic mountain road. The car felt great, well planted, predictable, fun as heck! So now Iím kind of interested in getting upgraded shocks just to see what the next level feels like.

If those Tokico donít sell separately Iíll probably just get the Bilstein/Koni shocks, though I did see a set of PSS10 in the FS thread from a couple months ago 🤔
Wet feet is offline  
Old 05-27-2018, 12:31 PM
  #39  
travlee
Master
iTrader: (8)
 
travlee's Avatar
 
Join Date: Jul 2011
Location: Texas
Posts: 37,783
Received 5,942 Likes on 4,095 Posts
Default

I didnt like the stance or ride, now i will say i had them on stock shocks. I put on eibach pro kit an was happy all around, then i put on the dspecs and was in heaven.

just wasnt my liking, you may love them though
travlee is offline  
Old 05-27-2018, 02:19 PM
  #40  
Wet feet
Registered User
 
Wet feet's Avatar
 
Join Date: Jul 2017
Location: Costa Rica
Posts: 77
Received 1 Like on 1 Post
Default

Understood. And I am on stock shocks too, but only 18k miles, so that might help. Plus the sways. I’m sure it can be improved upon. Certainly I believe/feel the Tein are an improvement over stock suspension. If by stance you mean lower, I would love lower, but just can’t. I wish there were a way to use "economical" air bags (not the full on air suspension) to raise the car temporarily over speed bumps, steep parking entrances etc, then I’d go lower. Love the way a reasonably lowered Z looks.

Wow, just looked at you’re profile, awesome Porsche! Dream car. I had a white 1972 914 if you know what those are, was a blast to drive. Nothing like that beast you have though. I was so close to getting an older Porsche before the Z, but I decided that ultimately the care/maintenance would be easier for the Z, here in CR.

Last edited by Wet feet; 05-27-2018 at 02:26 PM.
Wet feet is offline  

Thread Tools
Search this Thread
Quick Reply: Picking the right suspension for your performance needs.


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: