S13 Darting Need Help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

TheRepoMan · 08-23-2018, 01:17 AM

So not too long ago my car started darting when I got on the freeway, (at random). So basically as I was driving the steering wheel would kick left and then kick back. Almost as if the toe was off. I knew the toe was fine as I had just gotten the alignment done. Although at the time the car had about 6 degrees of camber in the front.

My first thought was that the camber was causing the darting. It is now set at 3 degrees darting continues, afterwards I didn’t have anyone to check the steering rack bushing, so I replaced them anyway as the bushing were about 30yrs old anyway and I had replaced virtually every other bushing outside of the control arm bushings anyway.

After this the darting lessened but was still there. Finally while replacing the steering rack bushing I noticed that my front caster arm bushing were completely shot. I then replaced the caster arms. The darting is almost completely gone but I can force it out.

At this point is I vigorously shake the wheel side to side while driving it kick back to one side interestingly though, if I slam on the brake, the steering wheel will then go back to its correct alignment.

Do you guys have any idea what this could be. I’m completely out of ideas and everything looks pretty tight under the vehicle. I’m at a loss....

***S14DB*** · 08-23-2018, 06:22 AM

How low is your car?

KiDyNomiTe · 08-23-2018, 08:27 AM

Could be any of the following
- modded knuckles (if you have them)
- steering rack is bad
- something is loose up front (check EVERY bolt)
- alignment is bad (some machines are not calibrated right)
- car is twisted
- bent wheel
- ride height is off

Probably more stuff I am forgetting

duballstar37 · 08-23-2018, 08:56 AM

All the above... also check your FLCA inner bushings for play. Jack up the car and try to move the front wheels top to bottom and side to side. Identify where the movement is coming from.

jumpman2334 · 08-23-2018, 09:54 AM

it looks like you replaced a bunch of stuff but no mention of an alignment after. did you get an alignment after?

slider2828 · 08-23-2018, 02:22 PM

Did you tightening the rack down to 70 ft/lb? or subframe torqued to spec?

TheRepoMan · 08-28-2018, 11:47 PM

Quote:

Originally Posted by S14DB

How low is your car?

Not low at all actually

TheRepoMan · 08-28-2018, 11:47 PM

Quote:

Originally Posted by slider2828

Did you tightening the rack down to 70 ft/lb? or subframe torqued to spec?

Rack is torqued to spec

TheRepoMan · 08-28-2018, 11:50 PM

I recently swapped to s14 control arms as well as s14 drop knuckles. Weirdly the GKTech grip drop knuckles make it damn near impossible to tighten the ball joint nuts and fit a cotter pin in. Since I couldnt it a cotter pin in, the Left side ball joint actually came loose causing the darting.

it turns out that the castle on the ball joint felt tight but wasn’t. Yesterday during the day I just took the whole thing apart and found that the knuckle (being that it was loose) had been rubbing against the shank on the ball joint flattening some of the threads. I straightened up the threads and was able to get it tight. Darting is is fixed an now I have officially replaced every old bushing on my car

Also though the gktech “grip” drop knuckles are badass they’re a pain to work with. Just fyi to anyone who plans on going that route in the future. Thanks for all your help!

08-23-2018, 01:17 AM	#1
TheRepoMan Leaky Injector Join Date: Oct 2008 Location: Somewhere in Houston Posts: 69 Trader Rating: (0) Feedback Score: 0 reviews	S13 Darting Need Help So not too long ago my car started darting when I got on the freeway, (at random). So basically as I was driving the steering wheel would kick left and then kick back. Almost as if the toe was off. I knew the toe was fine as I had just gotten the alignment done. Although at the time the car had about 6 degrees of camber in the front. My first thought was that the camber was causing the darting. It is now set at 3 degrees darting continues, afterwards I didn’t have anyone to check the steering rack bushing, so I replaced them anyway as the bushing were about 30yrs old anyway and I had replaced virtually every other bushing outside of the control arm bushings anyway. After this the darting lessened but was still there. Finally while replacing the steering rack bushing I noticed that my front caster arm bushing were completely shot. I then replaced the caster arms. The darting is almost completely gone but I can force it out. At this point is I vigorously shake the wheel side to side while driving it kick back to one side interestingly though, if I slam on the brake, the steering wheel will then go back to its correct alignment. Do you guys have any idea what this could be. I’m completely out of ideas and everything looks pretty tight under the vehicle. I’m at a loss.... Last edited by TheRepoMan; 08-23-2018 at 04:29 AM..

08-23-2018, 06:22 AM	#2
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	How low is your car? __________________ Comments should be taken as Opinions not as Statements of Fact

08-23-2018, 08:27 AM	#3
KiDyNomiTe Post Whore! Join Date: Mar 2002 Location: Chicago Age: 37 Posts: 6,296 Trader Rating: (0) Rides Gallery: KiDyNomiTe Feedback Score: 0 reviews	Could be any of the following - modded knuckles (if you have them) - steering rack is bad - something is loose up front (check EVERY bolt) - alignment is bad (some machines are not calibrated right) - car is twisted - bent wheel - ride height is off Probably more stuff I am forgetting __________________ PROCEED Grip Gambler

08-23-2018, 08:56 AM	#4
duballstar37 Zilvia Junkie Join Date: Aug 2007 Location: Eastbound and Down Posts: 495 Trader Rating: (10) Feedback Score: 10 reviews	All the above... also check your FLCA inner bushings for play. Jack up the car and try to move the front wheels top to bottom and side to side. Identify where the movement is coming from. __________________ P.A.T.T.

08-23-2018, 02:22 PM	#6
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,998 Trader Rating: (13) Feedback Score: 13 reviews	Did you tightening the rack down to 70 ft/lb? or subframe torqued to spec? __________________ Turn and Burn!

08-23-2018, 09:54 AM	#5
jumpman2334 Zilvia FREAK! Join Date: Jan 2010 Location: SHOW ME WHAT YOU GOT Posts: 1,115 Trader Rating: (1) Feedback Score: 1 reviews	it looks like you replaced a bunch of stuff but no mention of an alignment after. did you get an alignment after?

08-28-2018, 11:50 PM	#9
TheRepoMan Leaky Injector Join Date: Oct 2008 Location: Somewhere in Houston Posts: 69 Trader Rating: (0) Feedback Score: 0 reviews	I recently swapped to s14 control arms as well as s14 drop knuckles. Weirdly the GKTech grip drop knuckles make it damn near impossible to tighten the ball joint nuts and fit a cotter pin in. Since I couldnt it a cotter pin in, the Left side ball joint actually came loose causing the darting. it turns out that the castle on the ball joint felt tight but wasn’t. Yesterday during the day I just took the whole thing apart and found that the knuckle (being that it was loose) had been rubbing against the shank on the ball joint flattening some of the threads. I straightened up the threads and was able to get it tight. Darting is is fixed an now I have officially replaced every old bushing on my car Also though the gktech “grip” drop knuckles are badass they’re a pain to work with. Just fyi to anyone who plans on going that route in the future. Thanks for all your help!