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Is this a good alignment?, specs for a 73 Chally #690308
05/06/10 01:42 PM
05/06/10 01:42 PM
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sco440 Offline OP
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Front suspension is totally stock, but it has a new (nonfirm feel)steering gearbox. I brought it in so they could center my steering wheel and check alignment. Here are the "after results"

Caster, left --.02, right .33. These are the same as the before.
Camber, left .72 right --.22
Toe left .02 right .03
Toe Total .05
Steering wheel is still not totally centered but is better than it was. How do these numbers look? I just want it to go down the road straight.


'72 Road Runner
'72 Dart Swinger 340
'12 Challenger R/T
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690309
05/06/10 01:50 PM
05/06/10 01:50 PM
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So basically they did nothing.


No it is not right.


Not even close.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Is this a good alignment?, specs for a 73 Chally [Re: HealthServices] #690310
05/06/10 02:01 PM
05/06/10 02:01 PM
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Western., NY
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sco440 Offline OP
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Quote:

So basically they did nothing.


No it is not right.


Not even close.



They had it for 1/2 hour and charged $52.
What are the numbers they should have put it to?


'72 Road Runner
'72 Dart Swinger 340
'12 Challenger R/T
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690311
05/06/10 02:07 PM
05/06/10 02:07 PM
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BROOK PARK, OH
WILD BILL Offline
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I would have set it for around 0 to -0.5 deg camber, and(not that you will get much) as much pos caster as you can get while mainting 1/2 degree split between the 2 sides.

Ideally I'ld like to see around +2.5 degrees caster on a street car but without aftermarket bushings or control arms getting that much can be a challenge if at all possible.


Just my

Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690312
05/06/10 02:09 PM
05/06/10 02:09 PM
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68HemiB Offline
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If you paid to "align" the car, as opposed to "check" the alignment and center the steering wheel, one should expect:

1. Caster to be as positive as possible, and balanced, side to side. Practically, this might mean as little as .5 to 1.0 degree positive, to as much as 3.0 positive. If the car has rear-to-front downward rake, this can be hard without offset bushings or adjustable strut rods. At minimum, you want the caster the same on both sides.

2. The members on this board differ widely on what "good" camber is. I am old school, and would recommend around zero degrees, give or take a quarter. If there is ANY difference between the sides, there should be a bit more positive on the left than the right for crown climbing.

3. Toe should be about 1/8" total, and the steering wheel should be perfectly centered. Not kinda, not better-than-it-was.

I earned a living doing this when these cars were the used cars that came across my rack.


Down to just a blue car now.
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690313
05/06/10 02:12 PM
05/06/10 02:12 PM
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My preference would be

Caster as much + as possible but less than 6. Be happy if you can get more than 1 on a stock suspension.

Camber for the street negative 0.25

Toe is 1/8-3/16 toe in total so 0.125-0.1875


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Is this a good alignment?, specs for a 73 Chally [Re: 68HemiB] #690314
05/06/10 02:14 PM
05/06/10 02:14 PM
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What he said...

I do tend to have a little more toe in on worn out suspension. A fair amount of wear happens when you apply the brakes and this tends to toe out the front tires.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Is this a good alignment?, specs for a 73 Chally [Re: HealthServices] #690315
05/06/10 02:31 PM
05/06/10 02:31 PM
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sco440 Offline OP
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So it looks like I need to bring it back. According to the print out, the after specs appear to be within the specified range. I would like both sides to be as equal as possible.
When I bring it back, should I ask them to set it up with these specs? I did give the guy a sheet with similar numbers that I got off Moparts, but he didn't seem to interested in looking at it.
Caster; as much positive as possible or .5 to 1 (equal both sides)
Camber; 0 to .--25
Total Toe in .125 -- .1875
Perfectly centered steering wheel


'72 Road Runner
'72 Dart Swinger 340
'12 Challenger R/T
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690316
05/06/10 02:39 PM
05/06/10 02:39 PM
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Quote:

Caster, left --.02, right .33. These are the same as the before.
Camber, left .72 right --.22
Toe left .02 right .03
Toe Total .05




Your caster on the left is negative and it should be positive.

Your camber on the on the left is positive .72 which you can see if you look at the car from the front. It should be negative to match the other side.

And you should have a total toe more than you have shown above.

And your steering wheel should be straight not off to the side.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Is this a good alignment?, specs for a 73 Chally [Re: HealthServices] #690317
05/06/10 02:55 PM
05/06/10 02:55 PM
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sco440 Offline OP
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I called the place and talked to the technician, (which I should have done in person) and he said my caster on the left side was --.02 because the rear cam adjuster was was all the way inward as possible and the front cam adjuster was all the way outward and that was as close to positive as they could get. For the camber being .72, he said they could change it but that would make the --.02 even further away from a positive. He said a higher toe in would wear out my tires faster and keep what I have. This is the stock suspension.
I am bringing it back to get the steering centered.

Last edited by sco440; 05/06/10 02:58 PM.

'72 Road Runner
'72 Dart Swinger 340
'12 Challenger R/T
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690318
05/06/10 03:07 PM
05/06/10 03:07 PM
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A lot of techs have the assumption that zero toe is best for wear. When toe is set to near zero, it really is never zero in real life, and tends to be skittish when driving on the freeway because it actually toes out and darts to one direction or another when the car hits bumps or the suspension compresses. I do not believe in zero toe and to me .02 is basically zero toe.

If and when you have the money and the time, get at least some offset bushings for the upper a arms.

Last edited by HealthServices; 05/06/10 03:09 PM.

Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690319
05/06/10 03:08 PM
05/06/10 03:08 PM
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68HemiB Offline
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If what the tech said is true, my new recommendations would be:

1. Get the steering wheel centered.

2. Drive the car for a while, and see if you are satisfied with how it steers and wears the tires (I am not as freaked by the positive camber as are others). If steering and tire wear are acceptable, be happy driving a nice, vintage car. If you aren't happy, look into offset UCA bushings.


Down to just a blue car now.
Re: Is this a good alignment?, specs for a 73 Chally [Re: 68HemiB] #690320
05/06/10 03:16 PM
05/06/10 03:16 PM
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sco440 Offline OP
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He said he could raise the toe if I want. Should I leave it be or change it. If so, to what degree?
I plan to do some suspension upgrades this winter.


'72 Road Runner
'72 Dart Swinger 340
'12 Challenger R/T
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690321
05/06/10 03:30 PM
05/06/10 03:30 PM
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I'd have it at 0.125 toe in, but in the end it is up to you. Take it for a test drive on the way to the shop, see if what he has currently is what you can live with.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Is this a good alignment?, specs for a 73 Chally [Re: HealthServices] #690322
05/06/10 03:52 PM
05/06/10 03:52 PM
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Just to clarify, when Allen says .125 in and I say 1/8" in, we're saying the same thing.

I believe that the tech gave you toe-in in decimal DEGREES, which is completely different.


Down to just a blue car now.
Re: Is this a good alignment?, specs for a 73 Chally [Re: 68HemiB] #690323
05/06/10 04:04 PM
05/06/10 04:04 PM
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'course I was not thinking in degrees


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690324
05/06/10 04:08 PM
05/06/10 04:08 PM
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minot north dakota
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Quote:

I called the place and talked to the technician, (which I should have done in person) and he said my caster on the left side was --.02 because the rear cam adjuster was was all the way inward as possible and the front cam adjuster was all the way outward and that was as close to positive as they could get. For the camber being .72, he said they could change it but that would make the --.02 even further away from a positive. He said a higher toe in would wear out my tires faster and keep what I have. This is the stock suspension.
I am bringing it back to get the steering centered.


If your rear end is higher than the front, positive caster is hard to get. For every 1 degree of frame angle, your caster goes 1 degree negative. I have lots of rake, and actually run about 3/4 degree of negative caster. I run 1/4 degree left camber and 0 on the right side. .12 to .20 toe, or a little more is good.


DRIVE EM, DONT HIDE EM.
Re: Is this a good alignment?, specs for a 73 Chally [Re: ledft79] #690325
05/06/10 05:45 PM
05/06/10 05:45 PM
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sco440 Offline OP
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Thanks for everyone's help. I brought it back and he trued the steering wheel. I had him set the Toe in total to .25 degrees. .15 deg left, .11 deg right. That changed camber. The left camber was .72 deg now it is .65 deg. The right camber was -- .22 deg and is now --.23 deg. I am planning on upgrading the suspension/steering because it still steers like a boat.


'72 Road Runner
'72 Dart Swinger 340
'12 Challenger R/T
Re: Is this a good alignment?, specs for a 73 Chally [Re: sco440] #690326
05/06/10 06:29 PM
05/06/10 06:29 PM
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Niles , Ohio
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therocks Offline
oh wait.but hey.lets see.oh yeah.
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Be glad you got caster and camber where they are at.On my 65 all new suspension I had like neg 5 caster on one side and 6 on the other.I used the Moog offsets and got it to about 1/2 on both.Its manual steering so it handles decent.I played with mine on the alingment rack for probally 2 hours or better and Ive been doing alingments for 30 years.Rocky


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