Z pulls to right while shifting

BlackZMamba · 06-24-2016, 04:58 PM

My car is a 6 spd. manual transmission. I am on BC racing suspension. Recently I had an SPL rear camber kit installed, an alignment done, all new tires, and upgraded wheel size from 18" to 19".

I noticed that when I am accelerating, every time I shift and then give it gas, the car pulls to the right a little bit. It didn't used to do this before. It was still pulling to the side before the recent alignment and rear camber kit installation. It was not doing that when I was on my OEM stock wheels and lowered suspension.

I don't know what the problem might be.

Any ideas? It's kind of annoying that I have to slightly straighten the steering wheel when shifting. The pull is more noticeable when I step on it a little harder.

Note - there is no pull when I break, no vibration, and very slight (almost unnoticeable) steer wheel shake at cruising speeds (70mph+).

Jsolo · 06-24-2016, 05:05 PM

Stop breaking stuff!!

I'd start with the simplest stuff first. Swap the tires left/right on each axle. Assuming you're running asymmetric tires this should be fine. If the pull changes then you know it's the tires. If not, then start exploring suspension & alignment.

Edit: By tires I mean wheel/tire units, don't actually dismount the tires from the wheels, just rotate side to side on same axle.

SouthArk370Z · 06-24-2016, 05:16 PM

Jsolo has the right idea - makes some changes to the car and see how the behavior changes (or not). Swapping tires is pretty easy as long as the tires will permit (not uni-directional).

The first thing that came to my mind was some play in the rear suspension - tire(s) getting out of alignment when under heavy load.

Can you tell if it's the front or the rear pulling? If you can determine that, you will eliminate a lot of possibilities.

ChaseZ · 06-24-2016, 05:42 PM

Check the preload on the rear shocks. Specifically the right rear.

Breadz · 06-24-2016, 06:01 PM

So much torque the chassis twisted off the line?

Duc_Z09 · 06-24-2016, 06:53 PM

Quote:

Originally Posted by Breadz

So much torque the chassis twisted off the line?

On a Z? We wish.....

kenchan · 06-24-2016, 07:05 PM

Check psi and ride height. Ur left rear height is a tad low probably.

Spooler · 06-24-2016, 09:02 PM

Have the car corner balanced.

BlackZMamba · 06-27-2016, 12:06 PM

Quote:

Originally Posted by kenchan

Check psi and ride height. Ur left rear height is a tad low probably.

The height on both sides is the same. I measured both sides before getting the last alignment done.

BlackZMamba · 06-27-2016, 12:07 PM

Quote:

Originally Posted by ChaseZ

Check the preload on the rear shocks. Specifically the right rear.

I think this might be the issue. Thanks!

barncobob · 06-27-2016, 03:25 PM

being a base model it doesn't have the LSD, could the pulling be caused by the torque of the one axle grabbing the pavement and the other side just following along,,just a wild guess.

06-24-2016, 04:58 PM	#1 (permalink)
BlackZMamba Enthusiast Member Join Date: Oct 2012 Location: La Salle, IL Posts: 345 Drives: 2013 Z @ 321 whp Rep Power: 13	Z pulls to right while shifting My car is a 6 spd. manual transmission. I am on BC racing suspension. Recently I had an SPL rear camber kit installed, an alignment done, all new tires, and upgraded wheel size from 18" to 19". I noticed that when I am accelerating, every time I shift and then give it gas, the car pulls to the right a little bit. It didn't used to do this before. It was still pulling to the side before the recent alignment and rear camber kit installation. It was not doing that when I was on my OEM stock wheels and lowered suspension. I don't know what the problem might be. Any ideas? It's kind of annoying that I have to slightly straighten the steering wheel when shifting. The pull is more noticeable when I step on it a little harder. Note - there is no pull when I break, no vibration, and very slight (almost unnoticeable) steer wheel shake at cruising speeds (70mph+). __________________ Mods: ECUtek \| Stillen \| Fujimura \| BC Racing \| SPC \| Avant Garde \| Fast Intentions \| Z1 Motorsports \| Akebono \| Cooper \| Redline \| Motul \| Mobil 1

06-24-2016, 05:05 PM	#2 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 15	Stop breaking stuff!! I'd start with the simplest stuff first. Swap the tires left/right on each axle. Assuming you're running asymmetric tires this should be fine. If the pull changes then you know it's the tires. If not, then start exploring suspension & alignment. Edit: By tires I mean wheel/tire units, don't actually dismount the tires from the wheels, just rotate side to side on same axle. SouthArk370Z, DEpointfive0 and BlackZMamba like this. __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links Last edited by Jsolo; 06-24-2016 at 05:16 PM.

06-24-2016, 05:16 PM	#3 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Jsolo has the right idea - makes some changes to the car and see how the behavior changes (or not). Swapping tires is pretty easy as long as the tires will permit (not uni-directional). The first thing that came to my mind was some play in the rear suspension - tire(s) getting out of alignment when under heavy load. Can you tell if it's the front or the rear pulling? If you can determine that, you will eliminate a lot of possibilities. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

06-24-2016, 05:42 PM	#4 (permalink)
ChaseZ A True Z Fanatic Join Date: May 2016 Location: Calgary Posts: 3,799 Drives: 16 370z Rep Power: 94683	Check the preload on the rear shocks. Specifically the right rear. BlackZMamba likes this.

06-24-2016, 06:01 PM	#5 (permalink)
Breadz Base Member Join Date: Jan 2015 Location: Clovis Cali Posts: 240 Drives: 12 370z sport 6mt GM Rep Power: 11	So much torque the chassis twisted off the line? Duc_Z09 likes this. __________________ Fast Intentions Non res CF, CF Duckbill, Stillen G3, Fujimura Diffuser, Swift Springs, 180 Headlights, Forgestar F14Bronze

06-24-2016, 07:05 PM	#7 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	Check psi and ride height. Ur left rear height is a tad low probably. DEpointfive0, BlackZMamba and Ghostvette like this.

06-24-2016, 09:02 PM	#8 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,879 Drives: 2013 Nismo 370z Rep Power: 2684392	Have the car corner balanced. BlackZMamba likes this.

06-27-2016, 03:25 PM	#11 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 590	being a base model it doesn't have the LSD, could the pulling be caused by the torque of the one axle grabbing the pavement and the other side just following along,,just a wild guess. BlackZMamba likes this.

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