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| Help with Proper alignment specifications for an 86 GT (Page 1/1) |
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JohnWPB
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NOV 21, 04:39 PM
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I just completely replaced all the front suspension. All new ball joints, bushings, tie rod ends, new larger Fiero Store sway bar.
I have researched and brought myself up to speed as much as I can on aligning a Fiero. I have read that the Hunter machine was not updated with the latest GM TSB available. (The Firestone that I go to has a Hunter machine)
I found a nice reference chart on the Georgia Fiero Club website:
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This all makes sense to me except the "Toe In" for the front, which the chart has in millimeters. The Alignment machines use degrees, so I have to way to confirm that it was done correctly. Does 1.6mm = .10 degrees? I have no clue.
Here is how the alignment looked after it was completed this afternoon:
Another area that concerns me is the rear Camber. According to the TSB it should be -.1 degrees. When my car was aligned, the left rear is at -1.0 degrees, almost a full degree off. According to the paperwork it is in green, as it thinks that it is within specifications. On the rear right, the camber is at 0.5 degrees, and highlighted in red, as being out of range. Looking at the chart again, the right is twice as close to being correct according to GM when compared to the left rear, but it is the one that is marked in red.
The car feels fairly good when driving, but still a bit "swirley" when I make a quick lane change. I Feel quite a bit of body roll, or fishtailing kinda feel that I don't think should be there.
Can someone shed some light on what I need to do. Is the above alignment "good enough" or is it out of whack?[This message has been edited by JohnWPB (edited 11-21-2014).]
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Bloozberry
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NOV 21, 07:00 PM
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There's something not right with the chart you posted. If you look at the acceptable range for rear camber, it's -1.5 to -0.5. The halfway point between those two outer limits is -1.0... not -0.1. Your alignment print out is accurate when it shows that your left rear is correctly lined up at -1.0. Your right rear is at the outer limit of -0.5 degrees, but it is acceptable.
As for the front, the '86 FSM states that the toe should be +0.15 +/- 0.1 degree whereas the machine's limits have been programmed to half that, namely +/- 0.05 degrees. Using the FSM's table, your front toe is still within OEM acceptable limits. But toe is very easily adjusted by simply turning the tie rod one way or the other after loosening the jamb nut so I don't know why they didn't correct the RH toe to be within the machine's limits.
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Jims88
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NOV 21, 07:18 PM
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racingfortheson
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NOV 21, 11:23 PM
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I know I've seen someone post a "Best setup" list for the alignment.
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theogre
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NOV 22, 03:28 PM
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Yes, sloppy work when toe is out.
Note that if car doesn't have cam bolts for struts then expect rear camber issues.
Is very hard to adjust that w/o the bolts.
You add the cam bolts. Car didn't come w/ from the factory.
See my Cave, Strut & Shock and Alignment Spec's
Spec above came from my cave, I've updated that to make easier to read.
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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)[This message has been edited by theogre (edited 10-09-2020).]
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PhatMax
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OCT 09, 05:06 PM
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Ogre ! Do you have the alignment specs still ? the link does not work anymore. thank you in advance !
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theogre
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OCT 09, 11:17 PM
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PhatMax
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OCT 10, 08:58 AM
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