Rear Alignment: Relationship between Camber and Toe, Talking through my settings, interested in informed feedback! |
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Rear Alignment: Relationship between Camber and Toe, Talking through my settings, interested in informed feedback! |
Morrie |
Aug 13 2022, 01:46 PM
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#1
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Member Group: Members Posts: 181 Joined: 8-October 07 From: Cedar Park, Texas Member No.: 8,198 Region Association: Southwest Region |
Hi Guys!
I had my car 4 wheel aligned yesterday and overall went well. I've replaced all the bushings, shocks, struts, springs, bearings, etc so it was all totally out of wack.... Good news, everything came into spec in front. All good. Car drives great now. In the rear I needed a bit of camber to clear the tops of my tires, so I am sitting here: Rear Left: Camber: -1 deg 24' Rear Right: Camber: -1 deg 12' Camber: Factory says max difference from left to right is +/- 20'. I've got 12' difference side to side so I think I am okay there, even though the extra camber may cause some tire wear that I can live with. Toe: Factory says toe should be 0deg +15' per side. The alignment shop set limits to 0deg +/- 15'. A lot of numbers and I can make a bunch of guesses, but I would like to know for my road car which gets some spirited hill country driving, should I work on getting more positive rear Sorry if this is beaten to death or overcomplicated. Writing it down here helped me get it straight in my head. (IMG:style_emoticons/default/blink.gif) If it helps, below are my suspension settings and condition. Car was corner balanced prior to going for alignment, and is slightly lowered. Clearance on the RH side (passengers) rear tire is tight but it does clear with the current settings. Front: Stock Torsion Bars Rear: New 100lb Eibach coils Thanks Guys! |
mlindner |
Aug 14 2022, 08:22 AM
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#2
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Senior Member Group: Members Posts: 1,530 Joined: 11-November 11 From: Merrimac, WI Member No.: 13,770 Region Association: Upper MidWest |
Morrie, just 1/16 or so on the trailing edge of the three holes, then the bracket could move a little forward creating toe-in. Both right and left side were off (positive) in the same amount, so not sure if they were bent. Butt I did weld the stiffining kit to the control arms so that could have been the cause. Best, Mark
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ChrisFoley |
Aug 14 2022, 10:52 AM
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#3
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I am Tangerine Racing Group: Members Posts: 7,935 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
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914_teener |
Aug 15 2022, 12:27 PM
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#4
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914 Guru Group: Members Posts: 5,205 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
Butt I did weld the stiffining kit to the control arms so that could have been the cause. Best, Mark Installing the 3 sided overlay reinforcements always causes warpage that leads to toe out. I didn't read that you replaced the rear bushings on the trailing arms. Did you? I'd echo what Chris says. When I did mine I checked them on a surface plate before I reinstalled them. Didn't want to take the whole mess apart twice...particulary the CV's to find out I couldn't align the rear. AND...there are a bunch of threads on how to strenghthen them and when you would want to. I |
Morrie |
Aug 15 2022, 04:37 PM
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#5
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Member Group: Members Posts: 181 Joined: 8-October 07 From: Cedar Park, Texas Member No.: 8,198 Region Association: Southwest Region |
I didn't read that you replaced the rear bushings on the trailing arms. Did you? I'd echo what Chris says. When I did mine I checked them on a surface plate before I reinstalled them. Didn't want to take the whole mess apart twice...particularly the CV's to find out I couldn't align the rear. AND...there are a bunch of threads on how to strengthen them and when you would want to. The rear bushings are new, holes are not ovaled out and everything back there is tight. I reviewed a lot of things when I did the suspension work but this is my first time doing this on a 914 and did not pay as much attention to the rear arms other than inspect welds and for corrosion, which appeared fine. If I pull them off and strip them again, is there a process to measure them, or better still does someone have a go/no go jig? I saw an old post from Chris that sounded like he was developing one, but that was a few years back. I agree that there is a bunch of information on the board on these. I've been reading to educate myself. |
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