YOUR suspension setup to Prevent UNDERSTEER - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

007jpang · 05-01-2005, 11:52 PM

my s13 coupe understeers like a mofo... just wonder what your suspension set up is (coilover, tire pressure,chasis reinforcement, etc) that prevents understeer and produce more oversteer.

current set up

front tires 35psi
back tires 40psi
eibach prokit spring
tokico blue shocks
suspension tech sways

ebay front and rear strut bars

john...

Dousan_PG · 05-02-2005, 12:03 AM

mm
tanabe dd
NO FSTB
NO aftermarket front sway bar
tanabe rear sway
rstb
good tires front and rear
pressure like 32?

my s13 was
tein HE
rstb (no fstb)
do luck f and r ladder bars
s13 jdm rear sway, stock usdm front sway bar
tc rods
all rear suspension arms replaced
do luck rxb

i think thats it...
NEVER had an understeer problems

also WHAT front/rear tires you running
alignment? your toe might be f'd up. when was the last time you got an alignment???? might be out of spec
also do you run a diff? a 2 way will add some push while doing grip

sideview_180sx · 05-02-2005, 12:21 AM

Tein HEs
No FSTB
Cusco Type OS RSTB
JDM Hicas Rear sway (doesn't seem that large)
PSI at 36 all around(street/daily)

NOTE: as stated earlier with a 2-way on initial throttle when cornering you will push. you need to break the limit of adhesion to drift, unless you clutch kick, e-brake, feint, etc.... or other ways to break the rear out. simple cornering to make the rear come out isn't going to happen.

zootang · 05-02-2005, 12:22 AM

Here is a good link that tells you what to change to get more understeer, or oversteer.

http://www.autornd.com/Merchant2/mer...SUSPENSIONTUNE

I run---->
Tein HE-(-1.0* to -3.0* camber front)
SPL-front tension rods (8.5*to 9.0* caster)
SPL-RUCA (0.0*to -0.50*)
Nismo-front under brace
C-Tune-front and rear strut tower bars
P2M subframe spacers
32psi to 35psi for the tires, sometimes I will run like 40psi in the rear for smoke.
I like a slite toe in on the rear, and slite toe out up front.
Oh and run good tires up front.

Flybert · 05-02-2005, 12:31 AM

I set my dampening in the rear slightly stiffer than the front.

I'd say the most improvements can be made in the way you brake. For instance, in a series of corners that are all in the same gear, I'll use left foot trail braking with quick transition throttle. If it's a turn that requires hard braking and downshifting, I'll make sure to brake earlier and smoothely and ride the brakes into the turn for some trail braking grip.

s13irdie2 · 05-02-2005, 12:46 AM

silkroad coilvers, tanabe rear sway bar, stock front sway bar, front and rear strut bar, almost all arm replaced with aftermarket

SaGang227 · 05-02-2005, 12:56 AM

Easiest you can do right now is probably loosing the rear pressure.
If the rear is lower than front, you will get rid of some understeer.

Flybert · 05-02-2005, 01:10 AM

Quote:

Originally Posted by SaGang227

Easiest you can do right now is probably loosing the rear pressure.
If the rear is lower than front, you will get rid of some understeer.

With comments like this, you should lose permission to respond to this thread.

SaGang227 · 05-02-2005, 01:14 AM

I am so sorry I was just speaking from personal experience.

EDIT: Actually I searched on google and my comment seemed to be right.

http://www.ffcobra.com/FAQ/handling101.html
http://www.tirerack.com/tires/tirete....jsp?techid=58
http://www.autornd.com/Merchant2/mer...SUSPENSIONTUNE

It is even stated in the link provided by zootang above.
Now, don't you think your response was a little too harsh?
Even if I was wrong, you did not need to be so rude and ignorant.
You could've just corrected me in that case.
I won't do the same thing you did to me so there, you know it now.

007jpang · 05-02-2005, 08:52 AM

Quote:

Originally Posted by SaGang227

I am so sorry I was just speaking from personal experience.

EDIT: Actually I searched on google and my comment seemed to be right.

http://www.ffcobra.com/FAQ/handling101.html
http://www.tirerack.com/tires/tirete....jsp?techid=58
http://www.autornd.com/Merchant2/mer...SUSPENSIONTUNE

It is even stated in the link provided by zootang above.
Now, don't you think your response was a little too harsh?
Even if I was wrong, you did not need to be so rude and ignorant.
You could've just corrected me in that case.
I won't do the same thing you did to me so there, you know it now.

i did the opposite instead.
(i thought that lowering the front tire psi would give more grip in the front= more oversteer... )

jmauld · 05-02-2005, 09:17 AM

Air pressure vs. Grip is like a bell curve.

Too little pressure and you lose grip, too much pressure and you also lose grip.

NismoSilvia270R · 05-02-2005, 10:39 AM

Quote:

Originally Posted by jmauld

Air pressure vs. Grip is like a bell curve.

Too little pressure and you lose grip, too much pressure and you also lose grip.

true dat

for fsae we set a few days aside for tire pressure testing alone with our sensor/aquisition system to get a decent curve for diff temps.

ThE_BoMB · 05-02-2005, 11:08 AM

Tanabe sustec pro type II's (run 4 8, sometimes autoxing i run 3 6 to compensate for tight turns)
ST sway bars
KTS hard toe, traction, rear upper pro arms
KTS hard t/c rods, nismo power brace
Kazama subframe collars
3 point strut bars
Project MU dura camber plate, tanabe pillow ball on the rear
-1.5 degrees camber front and rear
42 psi in all four falken azenis
oem vlsd

understeer is pretty much eleminated. I do get a slide when i got into a hard turn too fast most of the time i can compensate. For the most part its all grip.

HyperTek · 05-02-2005, 11:10 AM

I also vote for Nofrontswaybar.com hahah

EDIT-Opps I meant Nofrontstruttowerbar.com hahahhaha my bad... idiot!

ghostuss · 05-02-2005, 11:25 AM

yo John. I used to understeer a lot until I got none stagger or close to none stagger tire setup.

Also there are a few tricks that you can do to really understeer without sacrifice front stiffness.

1. Load up the front with negative camber. I am talking about -2.5 or more degree.

2. Get really grippy tires in the front. I am running Falken azenis sport in the front and some cheap 711 in the rear. (Really be careful in the rain with that tire in the front)

3. Get coilovers and set the front to soft and rear to hard. I usually like to have rear on the stiffest to start the event and slowly soften it up as the tire wears out on the rear to balance the traction.

I run front and rear sway, front and rear strut. Really you don't have to take the front sway away. Don't listen to the other BS. Keep ur front stiff and just make the rear stiffer or give front more traction.

My suspension setup
Silkroad RM8 coilover
Silkroad rear toe adjuster
Silkroad rear upper control arms
Front Cusco tension rods
Front and rear ST sway bars
Front cusco CF strut bar
Rear OS strut bar

Next for me is front tie rods and tie ends upgrade.
And I would probably stick with this setup for until I get more engine work done.
By sometime summer of next year. I am gonna have Rollbar or Cage, fender brace, and possibily seam/sport weld the rear.

The ROMAN · 05-02-2005, 11:41 AM

SR20 or KA-T

For drifting you want the car to push when it's not sliding, makes it harder to spin.

ghostuss · 05-02-2005, 11:43 AM

yea and that smoke effect is so cool, except if you can't drift a low powered car = you still suck in drifting.

Dousan_PG · 05-02-2005, 11:45 AM

Quote:

Originally Posted by The ROMAN

SR20 or KA-T

For drifting you want the car to push when it's not sliding, makes it harder to spin.

wnat it to push so wont spin?
HAHAHAHAHAH
only if you suck at drifting. are a fucking newb. depend on power to rotate and cant tune a car's suspension.

basically your a jackass newbie poser. yeah. fuck yeah.

The ROMAN · 05-02-2005, 11:50 AM

Hey asshole, I've been drifting for two and a half years and I've won a few mini-comps so blow me. And I just went SR at the beginning of this year so don't tell me I can't drift with out power douche.

Yeah I'm a jackass...cause I only have 400 posts. Fuck you.

All I need is someone to host and I'll post vids of LAST years drifting with a KA and my "newb" drifting.

Dousan_PG · 05-02-2005, 12:02 PM

haha good for you

too funny.

its douche-san
be unoriginal like everyone else and say it. so cliche.

The ROMAN · 05-02-2005, 12:17 PM

No it's just plain douche, I could care less. Ok I'm a newb who sucks at drifting. Blah blah

Dousan_PG · 05-02-2005, 12:20 PM

good for you
honesty is key.

007jpang · 05-02-2005, 04:14 PM

Quote:

Originally Posted by ghostuss

yo John. I used to understeer a lot until I got none stagger or close to none stagger tire setup.

what do you mean by stagger???

Wei240 · 05-02-2005, 04:24 PM

Quote:

Originally Posted by 007jpang

what do you mean by stagger???

i'm assuming he's saying skinnier tires compared to the rears, or fatter tires in the rears compared to the front or wider rims with wider tires in the rears, something along that line...

Flybert · 05-02-2005, 04:26 PM

Quote:

Originally Posted by 007jpang

what do you mean by stagger???

Narrower in front than rear.
For instance 235/40/17 front and 255/40/17 rear.

05-01-2005, 11:52 PM	#1
007jpang Zilvia Junkie Join Date: Jan 2004 Location: Daly City/ San Jose Posts: 495 Trader Rating: (0) Feedback Score: 0 reviews	YOUR suspension setup to Prevent UNDERSTEER my s13 coupe understeers like a mofo... just wonder what your suspension set up is (coilover, tire pressure,chasis reinforcement, etc) that prevents understeer and produce more oversteer. current set up front tires 35psi back tires 40psi eibach prokit spring tokico blue shocks suspension tech sways ebay front and rear strut bars john... __________________ April 24th, 1915 http://www.shockdrifting.com

05-02-2005, 12:03 AM	#2
Dousan_PG Post Whore! Join Date: May 2002 Location: Orange County, California Age: 42 Posts: 16,640 Trader Rating: (23) Rides Gallery: Dousan_PG Feedback Score: 23 reviews	mm tanabe dd NO FSTB NO aftermarket front sway bar tanabe rear sway rstb good tires front and rear pressure like 32? my s13 was tein HE rstb (no fstb) do luck f and r ladder bars s13 jdm rear sway, stock usdm front sway bar tc rods all rear suspension arms replaced do luck rxb i think thats it... NEVER had an understeer problems also WHAT front/rear tires you running alignment? your toe might be f'd up. when was the last time you got an alignment???? might be out of spec also do you run a diff? a 2 way will add some push while doing grip __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira

05-02-2005, 12:21 AM	#3
sideview_180sx Zilvia FREAK! Join Date: Apr 2005 Location: somewhere north of mexico Posts: 1,538 Trader Rating: (3) Feedback Score: 3 reviews	Tein HEs No FSTB Cusco Type OS RSTB JDM Hicas Rear sway (doesn't seem that large) PSI at 36 all around(street/daily) NOTE: as stated earlier with a 2-way on initial throttle when cornering you will push. you need to break the limit of adhesion to drift, unless you clutch kick, e-brake, feint, etc.... or other ways to break the rear out. simple cornering to make the rear come out isn't going to happen. __________________ feel the rythym. feel the ride. get on up. it's bobsled time. COOL RUNNINGS!!! formerly sideviewcivic Save a Horse. Drift This Cowboy. AirBag Club Member #0014

05-02-2005, 12:46 AM	#6
s13irdie2 Zilvia Junkie Join Date: Jan 2003 Location: southern cali Age: 34 Posts: 508 Trader Rating: (0) Feedback Score: 0 reviews	silkroad coilvers, tanabe rear sway bar, stock front sway bar, front and rear strut bar, almost all arm replaced with aftermarket __________________ 1990 s13 IslandMotorsports, Inc.

05-02-2005, 01:14 AM	#9
SaGang227 Leaky Injector Join Date: Oct 2004 Location: Northern Virginia Age: 37 Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	I am so sorry I was just speaking from personal experience. EDIT: Actually I searched on google and my comment seemed to be right. http://www.ffcobra.com/FAQ/handling101.html http://www.tirerack.com/tires/tirete....jsp?techid=58 http://www.autornd.com/Merchant2/mer...SUSPENSIONTUNE It is even stated in the link provided by zootang above. Now, don't you think your response was a little too harsh? Even if I was wrong, you did not need to be so rude and ignorant. You could've just corrected me in that case. I won't do the same thing you did to me so there, you know it now. Last edited by SaGang227; 05-02-2005 at 01:43 AM..

05-02-2005, 12:22 AM	#4
zootang Join Date: Feb 2004 Location: Portland, OR Age: 39 Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	Here is a good link that tells you what to change to get more understeer, or oversteer. http://www.autornd.com/Merchant2/mer...SUSPENSIONTUNE I run----> Tein HE-(-1.0* to -3.0* camber front) SPL-front tension rods (8.5to 9.0 caster) SPL-RUCA (0.0to -0.50) Nismo-front under brace C-Tune-front and rear strut tower bars P2M subframe spacers 32psi to 35psi for the tires, sometimes I will run like 40psi in the rear for smoke. I like a slite toe in on the rear, and slite toe out up front. Oh and run good tires up front.

05-02-2005, 12:31 AM	#5
Flybert Post Whore! Join Date: Mar 2003 Location: none Posts: 3,862 Trader Rating: (7) Feedback Score: 7 reviews	I set my dampening in the rear slightly stiffer than the front. I'd say the most improvements can be made in the way you brake. For instance, in a series of corners that are all in the same gear, I'll use left foot trail braking with quick transition throttle. If it's a turn that requires hard braking and downshifting, I'll make sure to brake earlier and smoothely and ride the brakes into the turn for some trail braking grip.

05-02-2005, 12:56 AM	#7
SaGang227 Leaky Injector Join Date: Oct 2004 Location: Northern Virginia Age: 37 Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	Easiest you can do right now is probably loosing the rear pressure. If the rear is lower than front, you will get rid of some understeer.

05-02-2005, 09:17 AM	#11
jmauld Zilvia Junkie Join Date: Apr 2003 Location: Cary, NC Age: 45 Posts: 362 Trader Rating: (0) Feedback Score: 0 reviews	Air pressure vs. Grip is like a bell curve. Too little pressure and you lose grip, too much pressure and you also lose grip. __________________ Jason '95 240sx SE

05-02-2005, 11:08 AM	#13
ThE_BoMB Leaky Injector Join Date: Mar 2003 Location: Vancouver BC Canada Age: 37 Posts: 131 Trader Rating: (1) Feedback Score: 1 reviews	Tanabe sustec pro type II's (run 4 8, sometimes autoxing i run 3 6 to compensate for tight turns) ST sway bars KTS hard toe, traction, rear upper pro arms KTS hard t/c rods, nismo power brace Kazama subframe collars 3 point strut bars Project MU dura camber plate, tanabe pillow ball on the rear -1.5 degrees camber front and rear 42 psi in all four falken azenis oem vlsd understeer is pretty much eleminated. I do get a slide when i got into a hard turn too fast most of the time i can compensate. For the most part its all grip. __________________ 1991 240SX SE I dont have any mods i swear! http://www.cardomain.com/id/the_bomb

05-02-2005, 11:10 AM	#14
HyperTek Post Whore! Join Date: Mar 2003 Location: Cali Posts: 13,222 Trader Rating: (3) Feedback Score: 3 reviews	I also vote for Nofrontswaybar.com hahah EDIT-Opps I meant Nofrontstruttowerbar.com hahahhaha my bad... idiot! __________________ Keep it Classy Last edited by HyperTek; 05-03-2005 at 01:17 AM..

05-02-2005, 11:25 AM	#15
ghostuss Zilvia FREAK! Join Date: Jan 2004 Location: San Diego/San Francisco Age: 35 Posts: 1,337 Trader Rating: (0) Feedback Score: 0 reviews	yo John. I used to understeer a lot until I got none stagger or close to none stagger tire setup. Also there are a few tricks that you can do to really understeer without sacrifice front stiffness. 1. Load up the front with negative camber. I am talking about -2.5 or more degree. 2. Get really grippy tires in the front. I am running Falken azenis sport in the front and some cheap 711 in the rear. (Really be careful in the rain with that tire in the front) 3. Get coilovers and set the front to soft and rear to hard. I usually like to have rear on the stiffest to start the event and slowly soften it up as the tire wears out on the rear to balance the traction. I run front and rear sway, front and rear strut. Really you don't have to take the front sway away. Don't listen to the other BS. Keep ur front stiff and just make the rear stiffer or give front more traction. My suspension setup Silkroad RM8 coilover Silkroad rear toe adjuster Silkroad rear upper control arms Front Cusco tension rods Front and rear ST sway bars Front cusco CF strut bar Rear OS strut bar Next for me is front tie rods and tie ends upgrade. And I would probably stick with this setup for until I get more engine work done. By sometime summer of next year. I am gonna have Rollbar or Cage, fender brace, and possibily seam/sport weld the rear. __________________ 96 all suspension s14 SOLD 90 s13 coupe - SOLD Currently rocking 2002 BMW M3 w/ custom suspension. ButtonWillow, CA entire circuit drift/grip event by shock drifting spot for sale. Take over my spot for $150 only. Last edited by ghostuss; 05-02-2005 at 11:42 AM..

05-02-2005, 11:41 AM	#16
The ROMAN Zilvia Addict Join Date: Jul 2003 Location: NJ Age: 38 Posts: 730 Trader Rating: (2) Feedback Score: 2 reviews	SR20 or KA-T For drifting you want the car to push when it's not sliding, makes it harder to spin.

05-02-2005, 11:43 AM	#17
ghostuss Zilvia FREAK! Join Date: Jan 2004 Location: San Diego/San Francisco Age: 35 Posts: 1,337 Trader Rating: (0) Feedback Score: 0 reviews	yea and that smoke effect is so cool, except if you can't drift a low powered car = you still suck in drifting. __________________ 96 all suspension s14 SOLD 90 s13 coupe - SOLD Currently rocking 2002 BMW M3 w/ custom suspension. ButtonWillow, CA entire circuit drift/grip event by shock drifting spot for sale. Take over my spot for $150 only.

05-02-2005, 11:50 AM	#19
The ROMAN Zilvia Addict Join Date: Jul 2003 Location: NJ Age: 38 Posts: 730 Trader Rating: (2) Feedback Score: 2 reviews	Hey asshole, I've been drifting for two and a half years and I've won a few mini-comps so blow me. And I just went SR at the beginning of this year so don't tell me I can't drift with out power douche. Yeah I'm a jackass...cause I only have 400 posts. Fuck you. All I need is someone to host and I'll post vids of LAST years drifting with a KA and my "newb" drifting.

05-02-2005, 12:02 PM	#20
Dousan_PG Post Whore! Join Date: May 2002 Location: Orange County, California Age: 42 Posts: 16,640 Trader Rating: (23) Rides Gallery: Dousan_PG Feedback Score: 23 reviews	haha good for you too funny. its douche-san be unoriginal like everyone else and say it. so cliche. __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira

05-02-2005, 12:17 PM	#21
The ROMAN Zilvia Addict Join Date: Jul 2003 Location: NJ Age: 38 Posts: 730 Trader Rating: (2) Feedback Score: 2 reviews	No it's just plain douche, I could care less. Ok I'm a newb who sucks at drifting. Blah blah

05-02-2005, 12:20 PM	#22
Dousan_PG Post Whore! Join Date: May 2002 Location: Orange County, California Age: 42 Posts: 16,640 Trader Rating: (23) Rides Gallery: Dousan_PG Feedback Score: 23 reviews	good for you honesty is key. __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira

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