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-   -   Z Pulling Left (http://www.the370z.com/brakes-suspension/131111-z-pulling-left.html)

BettyZ 06-08-2019 04:59 PM

Z Pulling Left
 
I'm not the smallest human, and I've found it highly annoying that the Z pulls left a tad when I'm on the highway. Tires are fresh and suspension recently aligned. I noticed this pulling decreased when I had 70 lbs of ice in the passenger seat area.

I'm wondering what can be done to fix this, aside from welding a box together, mounting it to the passenger seat bracket, and loading it with lead bricks (we did this at a race shop I worked at in my teens.) Appreciate any thoughts or feedback!

OptionZero 06-08-2019 05:37 PM

Find a different alignment shop and do another one
Also inspect suspension components for damage and tires for uneven wear

Trips 06-08-2019 06:17 PM

Like member OptionZero has suggested have it looked at by another alignment shop.

It could be the toe is off or the wheel needs to be balanced If that checks out then possiblylook at the brake caliper.

Rusty 06-08-2019 09:49 PM

Check your air pressure.

Next, switch your front tires left to right, right to left and see if it still does it. If it still pulls to the left. You then have ruled out radial tire pull. If it quits or pulls to the right. Then you know it's in a tire. Do this first because it doesn't cost any money if you switch the tires yourself.

Next step would be an alignment shop.

Zyonara91 06-18-2019 10:10 PM

I would:
1) Do what Rusty told you to do. . . If nothing then:

2) Go get your tires balanced (for good measure) and an alignment, while at it, tell them to check your tire pressure.

CM370z 06-19-2019 10:53 AM

I say this with no offense to anyone but if you are particularly large person, your weight may cause the alignment to be off when driving. To compensate for this, you can get another alignment but have them align the car with you in it. This should fix your car veering to the left when driving IF the problem was indeed the alignment.

bunk 06-19-2019 10:55 AM

Quote:

Originally Posted by CM370z (Post 3862103)
I say this with no offense to anyone but if you are particularly large person, your weight may cause the alignment to be off when driving. To compensate for this, you can get another alignment but have them align the car with you in it. This should fix your car veering to the left when driving IF the problem was indeed the alignment.

Or get another fat person to sit in the passenger seat. :stirthepot: :wtf2:

BettyZ 06-19-2019 11:30 AM

Quote:

Originally Posted by CM370z (Post 3862103)
I say this with no offense to anyone but if you are particularly large person, your weight may cause the alignment to be off when driving. To compensate for this, you can get another alignment but have them align the car with you in it. This should fix your car veering to the left when driving IF the problem was indeed the alignment.

See this is what I was getting at. And that's what I thought would be the solution.

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BettyZ 06-19-2019 11:31 AM

Quote:

Originally Posted by bunk (Post 3862105)
Or get another fat person to sit in the passenger seat. :stirthepot: :wtf2:

Whatchumean "another?" This is all muscle, friend. I drop the trans and bench press it back into place for my daily workout.

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bunk 06-19-2019 12:02 PM

:rofl2:

OptionZero 06-19-2019 01:27 PM

um . . . isn't something wrong with your suspension components if the weight of a driver is enough to disrupt the alignment?

cv129 06-19-2019 01:51 PM

How much left are we talking about?

Are we talking about nano of a degree over a mile or is it like driving an old work truck they had never been aligned?

BettyZ 06-19-2019 02:16 PM

Both good questions. We're talking 14% of the GAWR sitting in the driver seat. And the deviation in question is a very slow but noticable left drift. Could just be Illinois garbage roads are poorly graded. But I've always figured that if the interior was not designed with someone of my stature in mind, the suspension might not be either? Just thoughts. My knowledge of suspension is limited to:

1) it involves springs and gases.

2) if you unbolt the FUCA and pull the coilover out of its mounting holes, the steering knuckle will obey Archimedes/Newton and punch you in the face.

(Not really but you get my drift. Get it?)

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SouthArk370Z 06-19-2019 02:31 PM

Because of the crown in roads, many alignment shops adjust so that the car will pull a little to the left. Maybe your shop over did it.

As a temporary fix, you can add a little bit of air to the left tire. I'm assuming you've checked pressure on all four corners already.

BettyZ 06-19-2019 02:39 PM

Quote:

Originally Posted by SouthArk370Z (Post 3862164)
Because of the crown in roads, many alignment shops adjust so that the car will pull a little to the left. Maybe your shop over did it.

As a temporary fix, you can add a little bit of air to the left tire. I'm assuming you've checked pressure on all four corners already.

That makes sense. I have lifetime alignment with douche-stone and I'll be taking it in soon. I'll add some pressure to the left front. And yes I used an electronic meter on all four and they were equivalent.

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Rusty 06-19-2019 03:06 PM

Quote:

Originally Posted by SouthArk370Z (Post 3862164)
Because of the crown in roads, many alignment shops adjust so that the car will pull a little to the left. Maybe your shop over did it.

As a temporary fix, you can add a little bit of air to the left tire. I'm assuming you've checked pressure on all four corners already.

You have to adjust the caster to do that.

BettyZ 06-19-2019 03:22 PM

Quote:

Originally Posted by Rusty (Post 3862170)
You have to adjust the caster to do that.

So what I'm hearing is I no longer have an excuse not order the SPL catalog..

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OptionZero 06-19-2019 04:42 PM

wait we've been in this thread this long and you've never had an alignment to check this?

get the alignment

BettyZ 06-19-2019 06:24 PM

Quote:

Originally Posted by OptionZero (Post 3862192)
wait we've been in this thread this long and you've never had an alignment to check this?



get the alignment

Lol. I had an alignment 6 months/3000 miles ago. Car was pulling left before and after alignment.

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Rusty 06-19-2019 09:05 PM

Quote:

Originally Posted by BettyZ (Post 3862219)
Lol. I had an alignment 6 months/3000 miles ago. Car was pulling left before and after alignment.

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You have your spec sheet?

BettyZ 06-19-2019 10:12 PM

Quote:

Originally Posted by Rusty (Post 3862264)
You have your spec sheet?

Yessir!https://uploads.tapatalk-cdn.com/201...b05d340716.jpg

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Rusty 06-19-2019 10:24 PM

I don't see anything that sticks out. Looks fine. How much do you weight?. I'm 6'2", 220 lbs. Mine is straight as an arrow. Did you swap the front tires left to right, right to left yet?

BettyZ 06-19-2019 11:35 PM

Quote:

Originally Posted by Rusty (Post 3862285)
I don't see anything that sticks out. Looks fine. How much do you weight?. I'm 6'2", 220 lbs. Mine is straight as an arrow. Did you swap the front tires left to right, right to left yet?

6'4 260 lbs. Swapped the fronts two months ago while this issue was ongoing, and noticed no changes.

The drift isn't terribly dramatic but I notice it. It impedes on my driving Zen. I've spent the last 11 months hunting down and eliminating all such impediments, so I really appreciate your help.



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flyfish 06-21-2019 10:43 AM

1 Attachment(s)
On the next alignment sit in the drivers seat or ballast your weight in the drivers seat.

Also, a .4 diff in left to right camber is pretty large, seems suspicious since you are drifting to the left. A set of SPL front camber/castor arms might be in your future.

I would do an alignment with you in the drivers or ballast weight and a full tank first.

Casher1212 07-02-2019 11:28 AM

Z Pulling Left
 
Ur left camber .5 positive and ur right camber is 1.0 negative. If there is nothing broken and bushing are good, I would look there. If you lay an orange cone on its side then roll it forward, does it roll straight?https://uploads.tapatalk-cdn.com/201...7f459cc0b2.jpghttps://uploads.tapatalk-cdn.com/201...36da6fddba.jpg
Hope this helps.

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JARblue 07-02-2019 12:08 PM

Just lean your head to the right a little bit and everything will be fine ;)

Casher1212 07-02-2019 12:13 PM

Z Pulling Left
 
Lean back https://uploads.tapatalk-cdn.com/201...1876379763.jpg


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BettyZ 07-02-2019 01:08 PM

Quote:

Originally Posted by JARblue (Post 3864570)
Just lean your head to the right a little bit and everything will be fine ;)

Which head?

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JARblue 07-02-2019 06:04 PM

Quote:

Originally Posted by BettyZ (Post 3864585)
Which head?

Whichever one cares the most about the car pulling left.

Rusty 07-02-2019 07:57 PM

Quote:

Originally Posted by Casher1212 (Post 3864566)
Ur left camber .5 positive and ur right camber is 1.0 negative. If there is nothing broken and bushing are good, I would look there. If you lay an orange cone on its side then roll it forward, does it roll straight?https://uploads.tapatalk-cdn.com/201...7f459cc0b2.jpghttps://uploads.tapatalk-cdn.com/201...36da6fddba.jpg
Hope this helps.

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You on drugs?

His camber Left is -.6. Right is -1. .4 a degree. Camber will not cause a pull. Caster will cause a pull. And his caster Left is. +4.7, Right is +4.8. You need about .75 degree for most to feel it. Thrust angle will make a car feel like it's pulling.

Casher1212 07-02-2019 07:58 PM

Car will pull towards the side with less negative camber


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Casher1212 07-02-2019 08:01 PM

Oops the left side is negative .5 which is still more positive than negative 1.0


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Rusty 07-02-2019 08:04 PM

How many cars have you done alignments on? I used to do alignments.

Casher1212 07-02-2019 08:06 PM

Only 3 cars model S,X and 3


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Rusty 07-02-2019 08:09 PM

I did alignments for a living for a while.

Casher1212 07-02-2019 08:13 PM

Cool where about?


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Rusty 07-02-2019 08:23 PM

Quote:

Originally Posted by Casher1212 (Post 3864645)
Cool where about?


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I worked for Goodyear back in the mid 80's. I cut my teeth on a Hunter A111. One of the first computerized machines. Did a lot of race cars. Had a lot of people in the area that was into racing at that time. We would do the cars after we closed for the day to the public. This way, we wasn't being pushed to get things done.

Casher1212 07-02-2019 08:34 PM

Nice. What are u doin now?


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Rusty 07-02-2019 08:41 PM

Quote:

Originally Posted by Casher1212 (Post 3864655)
Nice. What are u doin now?


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Retired early.:tup:


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