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understeer!!

2.2K views 28 replies 13 participants last post by  tyrodtom  
#1 · (Edited)
Why do our S13's understeer so much? Through lots of corners on the touge I hit up tonight I could feel the understeer. Especially in the last curve. Its a 20mph I hit at 45 (stock suspension). I had an alright line, botched it a little and hit an early apex. Could feel the tires slide and hear them squeel. WTF?! How can I get rid of the understeer?

thanks a lot in advance for any help

on another note, anyone have pics of a white hatchback with Konig Rewinds on it?
 
#4 ·
why the fuck are you on stock suspension? lower your car and get some strut bars and you will notice the difference. If you want to stay stock ride height then buy tien in and outer tie rods.. they are adjustable to defeat that understeer
 
#5 ·
i have front and rear strut bars, thats all. i'm on stock suspension because my job sucks. i'm saving up for a simple spring/strut combo. what kinda psi should i run?

you know i got potenzas peter, get your s13 running.
 
#6 ·
larger rear sway bar, more camber in front, stickier tires, softer front springs (when your on coilovers...so stiffer since your on stock)...there are 100 different ways to eliminate understeer or induce oversteer.
 
#7 ·
Mr.180sx said:
why the fuck are you on stock suspension? lower your car and get some strut bars and you will notice the difference. If you want to stay stock ride height then buy tien in and outer tie rods.. they are adjustable to defeat that understeer
starting a baseline run on stock suspension is very good to build up driver skill.
 
#8 ·
Retard324 said:
Why do our S13's understeer so much? Through lots of corners on the touge I hit up tonight I could feel the understeer. Especially in the last curve. Its a 20mph I hit at 45 (stock suspension). I had an alright line, botched it a little and hit an early apex. Could feel the tires slide and hear them squeel. WTF?! How can I get rid of the understeer?

thanks a lot in advance for any help

on another note, anyone have pics of a white hatchback with Konig Rewinds on it?
your driving input is no good, if you dotn know when and how you will understeer in your car. try a differnt line utilizing a late apex. or brake a little harder earlier before the early apex. what kind of turn was it? and how are your bushings?
 
#9 ·
Retard324 said:
(stock suspension)
thats why. even the driftking himself says the s13 understeers like a pig but can easily be fixed by purchasing his kei office suspension. haha but really get some springs at least. sway bars. and some tires.

edit. stitch weld your front end.
Image

http://www.240sxforums.com/forums//showthread.php?t=84261

for the hatch it was like night and day. i know on exit ramps and tight turns, body roll was a killer but he stitch welded the front end and man theres hardly any body roll at all. and thats without buying a damn thing.
 
#10 ·
yeah i got some springs picked out. when i have enough money to spare i'm gonna upgrade the suspension a bit. not too much though, parts need to be transferable to the shell i have. how much does stitch welding run? is it an easy DIY with a little practice?

i have no idea about the condition of my bushings. havent been under the car since december and wasnt really checking anything out. the turn was fairly sharp but had a bit of a bank to it.

thanks a lot guys, i'll keep all of this in mind.
 
#12 ·
Retard324 said:
yeah i got some springs picked out. when i have enough money to spare i'm gonna upgrade the suspension a bit. not too much though, parts need to be transferable to the shell i have. how much does stitch welding run? is it an easy DIY with a little practice?

i have no idea about the condition of my bushings. havent been under the car since december and wasnt really checking anything out. the turn was fairly sharp but had a bit of a bank to it.

thanks a lot guys, i'll keep all of this in mind.
wat suspension u lookin at? also where in va do u live? no good windy roads in richmond...
 
#13 ·
A s13 has a rear swaybar stock, You might put urethane bushinys on the rear sway bar only, that has the same effect as putting on a slightly bigger bar.I can't tell you what pressure to run because that depends on what tires you're running. Try dropping the pressure 1lb in the rear or up 1 in the front and try it,it just takes small adjustments to make a difference.
 
#14 ·
Like td5turbo said lower the car with some sticky tires and run a little negative camber in the front and you will be good to go. Or you can put a little bit of weight in the front and drop an rb in the car:rotflmao that will cure your understeer:thumbsup
 
#15 ·
lol dude, Peter! You know who I am. You know where I live. I'll show you where Dave and I went and the road Kevin Trinh showed me, they're awesome. Kevin's road is INSANE!

I'm running Potenza RE950, 205/60/15. i'm not gonna do too much to the S13 i got now, sleeping beauty is waiting for me in the garage.

I'm gonna do my alignment in a couple weeks, and soon enough I'll have enough for springs and struts.
 
#17 ·
Well then change your driving style...I dont see why you asked a question and then say "ohh, well I dont want to change anything right now...." WTF man?

Here is a tip, once you feel the front end pushing, let off the gas and tap the brakes, not hard enough to upset the car, just enough to transfer weight to the front. Or try trail braking (should be doing this already though) and getting onto the gas later.
 
#18 ·
I mean like I dont get why our cars understeer or why they're set up for it. I have another S13 in the garage waiting for a motor. I'm gonna do everything I can suspension wise to that. I just dont wanna waste money on the one I'm driving now. It got raped by hail and looks like crap.

I really wanna take a driving class for it. I tried to for rally racing, but I missed the cut off date.

I still have a lot of learning to do to get the best line and technique down. I try to associate heel-toe and getting a good line in my daily driving at the same time not breaking and traffic laws of course.
 
#19 ·
most factory cars are setup for understeer because it is safer than oversteer. Alot of AutoX guys say that it is better for a beginner to drive a car prone to understeer as opposed to a car set up for oversteer.
 
#20 ·
Td5turbo said:
most factory cars are setup for understeer because it is safer than oversteer. Alot of AutoX guys say that it is better for a beginner to drive a car prone to understeer as opposed to a car set up for oversteer.
+1, this car was made as a little secretary commuter not a super drifter I mean it was really designed in the mid 80's
 
#23 ·
a rear sway bar, reat stb, and less camber will help....depending on what your alignment specs are right now
 
#24 ·
The rear wheels on a 240 are toed in stock, it is ajustable, you do not have to buy a thing. Do something radical, jack your car up and LOOK at your rear suspension,see the rearmost suspension link, that controls rear toe, see the cam bolt on the body end, it can be turned to adjust the rear toe, just think what rear toe in does to the handling, adjust it very carefully,you don't ever want rear toe out, the car will drive up your own ass with rear toe out. While you're under there you will notice that the car already has a rear sway bar, and the rear camber is adjustable also, a little more rear negative camber will help handling also. You can spend big bucks and replace every suspension component on you car' or with a little time and knowledge you can adjust the stock parts and get very good results and put that money on something else.
 
#25 ·
Hey retard I might be able to give some decent input. I have a VERY similar setup to yours: stock everything except for a pair of strut tower bars, AND I also am running Potenza 950s, new. I'm runnin 195/60/15 though. The key is weight transfer and tire pressure FOR NOW. Before I got the Potenzas I had really crappy cooper all-season with 25% tread left (29psi all around) and those understeer'd like a mutha. Now I run 34psi front, 32 rear. (manual recommends 29psi all around) That helps a lot, especially up in the front once you start putting some more weight on the 950s into the corners. Tire squealing is good. That means you're approaching the tire's grip limit, but our 950s slip very consistently while still giving a high level of grip. Practice braking and transferring a good amount of weight onto the front outside tire, and then when that starts to squeal, slowly let off the brake and apply the power to get the ouside rear to squeal. Now you're neutral. Trust me, we're stock, we won't be inducing power oversteer anytime soon.