Front end allignment ?
#2140177
08/24/16 09:11 PM
08/24/16 09:11 PM
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Joined: Nov 2005
Posts: 601 New Lenox il.
CARMAN
OP
mopar
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OP
mopar
Joined: Nov 2005
Posts: 601
New Lenox il.
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I have a 72 Plymouth roadrunner I recently installed some tubular upper control arms. Took the car to the goodyear place in town and had the alignment done. Car now drives like crap seems to wonder all over and not very stable at highway speeds. Here is the print out they gave me do these specs look good. Should I find a different shop. They also said they had a hard time because I have wider tires in the rear. Never heard of that before.
Last edited by CARMAN; 08/24/16 09:14 PM.
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Re: Front end allignment ?
[Re: CARMAN]
#2140253
08/24/16 10:53 PM
08/24/16 10:53 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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They also said they had a hard time because I have wider tires in the rear. Never heard of that before. that might have made it harder to measure the thrust angle but I am just thinking out loud & here is a BTT for ya
live every 24 hour block of time like it's your last day on earth
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Re: Front end allignment ?
[Re: NANKET]
#2140334
08/24/16 11:57 PM
08/24/16 11:57 PM
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Joined: Dec 2004
Posts: 10,555 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,555
Rittman Ohio
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Sometimes you can turn the cams as far as they can go and you still can't get the camber and caster in the green. These cars are old and you never know how the frame is. Sometimes you have to make a compromise to get the camber and caster readings close to being correct. I would have sacrificed some caster to get the camber a little closer and just try to even out the cross caster. You have to remember that most guys won't spend the extra time to get it right because it only pays a certain amount on the flat rate clock. If you lived closer I would be able to get it in a little better Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: Front end allignment ?
[Re: CARMAN]
#2140370
08/25/16 12:54 AM
08/25/16 12:54 AM
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Joined: Jan 2003
Posts: 27,471 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,471
So Cal
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Get pictures of your front and rear adjustment cams for each side of the car. Post them and we'll have an idea of what adjustment is left. And if they got lazy or over their head doing the alignment.
Many new cars don't have camber or caster adjustment. A lot of alignment techs at lower level high volume (tire) shops aren't the most skilled and able to think outside the cookie cutter.
Find the shop of the local autocross guys use.
Last edited by autoxcuda; 08/25/16 12:55 AM.
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Re: Front end allignment ?
[Re: CARMAN]
#2140412
08/25/16 03:07 AM
08/25/16 03:07 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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Like Gus said many times you cant get no more then 1 to 2 pos caster and keep the chamber in specs with stock control arms. I would think with tubular they could get more pos caster. I also agree with Gus that I would sacrifice a little caster to try and get that left side chamber closer to 0 like the other side. Also I know many of the front end guys out there that are flat rate dont care what the actual reading is as all they do is get the reading to be green which means its in specs but could be on the high end. Its like if you had a chamber spec of 0 plus or minus 1 degree the car could have minus 1 degree chamber on the right front and plus 1 degree chamber on the left front and still show green on the screen and be in specs. But when you consider the true readings both front tires are leaning to the left side. I would never let a car go out like that but the machine would have the readings showing in the green which is in specs but both sides are at the far end working against each other. Same for caster. I like to get as much pos caster as I can to help the car handle better in most cases. And some guys learn how to use the machine but dont understand front ends to well. Here is what a front end guy who worked at the Dodge dealer I worked at told me on day when a Caravan had just the left front tire worn on the outer edge. I told the service manager when we looked at the car and the customers complaint about the L/f tire worn on the outer edge it had to be a chamber problem as the R/f tire looked perfect. The guy they hired to do just front end alignments said to us it could be the toe on the left front ???? I said to him thats not possible because the front tires are tied together and both would wear the same and he still said oh no I have seen the machine show just toe out on one front tire but not the other ??? And I thought to myself........and this is the guy who should knows front ends inside and out. So I agree I would find a shop with someone who will set your car right and even if you have to slip him a little cash tip to make sure he does it right for you its worth it. Ron
Last edited by 383man; 08/25/16 03:12 AM.
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Re: Front end allignment ?
[Re: CARMAN]
#2140627
08/25/16 03:13 PM
08/25/16 03:13 PM
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Joined: Jan 2003
Posts: 21,080 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,080
Niles , Ohio
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I agree lots of times they wont be close.My 65 I even used the offset bushings and wasnt close.But I did get it pretty even.My kids 62 300 same thing.that is a ton of toe.I like about .08 or .10 at most.Miss not having the shop to do my stuff now.Rocky
Chrysler Firepower
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Re: Front end allignment ?
[Re: TC@HP2]
#2140814
08/25/16 09:06 PM
08/25/16 09:06 PM
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Joined: May 2005
Posts: 4,744 Florida
BDW
master
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master
Joined: May 2005
Posts: 4,744
Florida
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Take it back and tell them to put 2005 Mustang GT specs on it. What specs would that be?
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Re: Front end allignment ?
[Re: CARMAN]
#2140986
08/25/16 11:24 PM
08/25/16 11:24 PM
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Joined: Jan 2003
Posts: 27,471 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,471
So Cal
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Are you calling the "right" side the passenger side?
In the pictures of the rear adjusters, which direction in the tire (toward the outside of the car)?
In all the pictures, is upwards in the picture also upwards on the car?
If I'm interpreting the directions correct, the left/driver side rear is pulled all the way inwards to for max neg camber and max positive caster. And the left/drivers side front is in the middle of the adjustment range.
So...if you move the front inward you get closer to 0 deg camber, but you loose caster. If you move the front outward you get more neg camber (worse), and you gain caster.
Caster is considered a "non tire wearing" adjustment (at extreme positive caster you can increase some wear). Camber is a tire wearing condition.
**Something is going on the drivers side** Does look rusty. Start investigating from there. Like the rear chassis A-arm mount in pushed outward or the front chassis A-arm mount is pushed inward.
Problem is...the right/passenger side is maxed out to is LEAST amount of caster. So if you change the left/drivers toward 0 deg camber and loose some caster, the end result will be more caster on right/pass side then left/drv side. They call the cross caster. Cars will pull slightly to the side with the greater positive caster.
Actually, my guess is the alignment tech spend extra time on this trying to juggle the right combo to put makeup on a monkey of a situation.
Do you have stock strut rods? Do you have Poly strut bushings?
Last edited by autoxcuda; 08/25/16 11:31 PM.
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