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Alignment—Do individual readings matter or just totals?

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Old May 16, 2007 | 10:32 AM
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Default Alignment—Do individual readings matter or just totals?

Not getting any feedback in the general suspension thread...can you track guys read my alignment like my tarot cards and tell me what lies in my future? LOL. Thanks:

https://my350z.com/forum/brakes-and-suspension/272130-alignment-do-individual-readings-matter-or-just-totals.html
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Old May 16, 2007 | 11:47 AM
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The car will probably drive straight, but the rear toe and camber is out big time. If you have lowering springs this will cause the camber & toe to be out in the rear. Rec some camber and toe arms to correct the issue. If you don't have springs has the car been wrecked? Either way the arms will correct the rear problem.
With rear toe both being set to the left and rr wheel camber leaning in that much, when going over a bump the rear of the car may feel like it wants to jump left.
The front is so so, but none of this is that quality of an alignment. They should have told you that your going to have problems with tire wear and the car should not handle all that well compared to what it should be at.

So what is all on your car suspension wise?
Mike

edit: after looking at it again they did not adjust the rear at all!

Last edited by mpowers; May 16, 2007 at 12:12 PM.
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Old May 16, 2007 | 12:08 PM
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I had a similar problem:

https://my350z.com/forum/showthread....light=hotchkis

I actually took my car back to the dealership to re-do but I had a feeling they just tweaked the numbers a little bit (not sure but it's a possiblity) since the second time I took it in, the numbers changed drastically. My service advisor at WCN told me that the front camber on stock Z's are just not tune-able. There's no room for adjustment, yet on my second print out the numbers changed drastically.

To me, your camber seemed okay before you took it in, but your left rear is pretty off. I think spec is (0.03-1.8) on all four corners. Maybe you could take it back or get a second opinion at another place. Some places can "bend" your suspension pieces to get it back to spec but it's not recommended.
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Old May 16, 2007 | 01:33 PM
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Originally Posted by mpowers
The car will probably drive straight, but the rear toe and camber is out big time. If you have lowering springs this will cause the camber & toe to be out in the rear. Rec some camber and toe arms to correct the issue. If you don't have springs has the car been wrecked? Either way the arms will correct the rear problem.

With rear toe both being set to the left and rr wheel camber leaning in that much, when going over a bump the rear of the car may feel like it wants to jump left.
The front is so so, but none of this is that quality of an alignment. They should have told you that your going to have problems with tire wear and the car should not handle all that well compared to what it should be at.

So what is all on your car suspension wise?
Mike

edit: after looking at it again they did not adjust the rear at all!
That's right! They didn't touch the rear at all...Do you know if the rear camber can be adjusted independently from toe?

No wrecks (owned since new) and I am lowered on Hotchkis springs which most have been able to get back into spec.
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Old May 16, 2007 | 01:38 PM
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Originally Posted by bugsbbunny
I had a similar problem:

https://my350z.com/forum/showthread....light=hotchkis

I actually took my car back to the dealership to re-do but I had a feeling they just tweaked the numbers a little bit (not sure but it's a possiblity) since the second time I took it in, the numbers changed drastically. My service advisor at WCN told me that the front camber on stock Z's are just not tune-able. There's no room for adjustment, yet on my second print out the numbers changed drastically.

To me, your camber seemed okay before you took it in, but your left rear is pretty off. I think spec is (0.03-1.8) on all four corners. Maybe you could take it back or get a second opinion at another place. Some places can "bend" your suspension pieces to get it back to spec but it's not recommended.
Well, he did mention something about the printout being off because of the shop fan. I'd like to take it back to have the toe fixed and the rear camber brought into spec (if you can) but who's to say you can trust them?

Anyone know a good place to get a performance alignment in the Tampa Bay area?
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Old May 16, 2007 | 02:07 PM
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Originally Posted by 350Zenophile
That's right! They didn't touch the rear at all...Do you know if the rear camber can be adjusted independently from toe?

No wrecks (owned since new) and I am lowered on Hotchkis springs which most have been able to get back into spec.
I have hotchkis springs on too and that's what I thought. Service advisor told me that every Z's is different and someone else mentioned that the Z's have poor design in the ball-joint connecting to the camber arms resulting in tire feathering for many stock Z's. I just hope that my print out was correct and they didn't flubb it in any way.
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Old May 16, 2007 | 04:38 PM
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When you adjust camber it changes toe, vise versa on the toe but not such an effect as the other.
Now the rear of the Z the toe and camber are two different lower arms. Since you have ansewered yes to the suspension question, I take it is about a 1 inch drop from looking at the alignment. If they are adjustable coil raise up the rear an 1/2 inch. This will allow the rear toe and camber to come back into specs.
Check the ride height off the frame at the front and rear. The rear can be slightly higher with no ill side effects.
Later on when your ready pick up some camber and toe arms for the rear, they allow for more adjustment.

Here is a link for what I am talking about. Serveral people make them, just use your best judgement on what you need is.

http://www.stillen.com/product_images/308370.jpg

Oh and no I would not take it back to the same dealer.
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Old May 17, 2007 | 06:13 AM
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I don't have coilovers, just springs. Hotchkis springs are a mild drop at 15mm in the front and 19mm in the rear and from my online research everyone seems to be able to get them back to within factory specs with the factory control arms.

That's all I'm really looking to do, get an alignment within factory spec to save my tires and if possible with a slant toward performance. Thanks for your help.
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Old May 17, 2007 | 06:17 AM
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shouldnt the dealership be able to get everything back to spec as close as possible? I mean chit, how many different methods can there be to doing an alignment?
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Old May 17, 2007 | 06:35 AM
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Originally Posted by 350Zenophile
I don't have coilovers, just springs. Hotchkis springs are a mild drop at 15mm in the front and 19mm in the rear and from my online research everyone seems to be able to get them back to within factory specs with the factory control arms.

That's all I'm really looking to do, get an alignment within factory spec to save my tires and if possible with a slant toward performance. Thanks for your help.
With the rear at nearly 3/4" of an inch drop you’re in the gray area of being able to achieve factory spec. Some z's will, some z's will not. I would take it to another alignment shop, a race shop, if their is one near you. But with what I am reading you will have to much camber left and right rear in order to have the toe happy. It's a compromise, but the rear tires on the Z never last very long anyways.

Just remember everyone’s car is slightly different when it come so the whole assembly of suspension, this is why the factory has adjustment. What the factory does make adjustments for is when you change the geometry of the suspension (ie lowering the car). Thus this is why there are aftermarket companies filling in a void where the manufacturer left off.

Believe me you are not the first to have to buy adjustment arms when other don’t.

Mike
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Old May 17, 2007 | 06:38 AM
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Originally Posted by mpowers
With the rear at nearly 3/4" of an inch drop you’re in the gray area of being able to achieve factory spec. Some z's will, some z's will not. I would take it to another alignment shop, a race shop, if their is one near you. But with what I am reading you will have to much camber left and right rear in order to have the toe happy. It's a compromise, but the rear tires on the Z never last very long anyways.

Just remember everyone’s car is slightly different when it come so the whole assembly of suspension, this is why the factory has adjustment. What the factory does make adjustments for is when you change the geometry of the suspension (ie lowering the car). Thus this is why there are aftermarket companies filling in a void where the manufacturer left off.

Believe me you are not the first to have to buy adjustment arms when other don’t.

Mike

so a nissan dealership is totally incapable of doing an alignment for a dropped car?
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Old May 17, 2007 | 06:41 AM
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Originally Posted by mpowers
With the rear at nearly 3/4" of an inch drop you’re in the gray area of being able to achieve factory spec. Some z's will, some z's will not. I would take it to another alignment shop, a race shop, if their is one near you. But with what I am reading you will have to much camber left and right rear in order to have the toe happy. It's a compromise, but the rear tires on the Z never last very long anyways.

Just remember everyone’s car is slightly different when it come so the whole assembly of suspension, this is why the factory has adjustment. What the factory does make adjustments for is when you change the geometry of the suspension (ie lowering the car). Thus this is why there are aftermarket companies filling in a void where the manufacturer left off.

Believe me you are not the first to have to buy adjustment arms when other don’t.

Mike
Understood...I'm not opposed to aftermarket solutions, just want to make sure I really need them first. I've found a place locally that does race car alignments and corner weighting so I will try them first to corroborate the dealers printout and go from there. Like you said, looks like he didn't even touch the rear, which is from what I'm reading from Hunter, step one on a 4 wheel alignment to get the thrust angle to 0.

Last edited by 350Zenophile; May 17, 2007 at 06:49 AM.
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Old May 17, 2007 | 06:52 AM
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Originally Posted by AroundMyHorn
so a nissan dealership is totally incapable of doing an alignment for a dropped car?
No, I did not say that, but a race shop will be more familiar with what his needs are.

The dealer he went to did a poor job and did not even touch the rear of his car according to the print out. So why go back to argue with some one who does not understand what they are suppose to do in the first place.

Their are plenty of good dealers with well trained tech's that are capable to do a proper alignment, for that fact a lot of the local tire stores to a great job as well. But every real race shop (not a wannabe parts reseller) knows how to do it right the first time.

Regardless his springs are the problem and it's compounded by a poor technician and lack of knowledge on his part.

Does Hotchkis not do alignments, it is their product and they did install it right?

Sorry I was the bearer of the bad news,
Mike
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Old May 17, 2007 | 06:55 AM
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damn , i dont trust my dealership. I think i will call them and ask if they are "properly" trained to do such an alignment.
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Old May 17, 2007 | 07:03 AM
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Originally Posted by mpowers
Does Hotchkis not do alignments, it is their product and they did install it right?

Sorry I was the bearer of the bad news,
Mike
They might, but Hotchkis is located in CA, I'm in FL. No bad news...just information.
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