Rearend alignment = torque line issues! Need help!!
12-13-2005, 11:18 AM
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Rearend alignment = torque line issues! Need help!! Rearend alignment = torque line issues! Need help!!
This is new territory to me!
I took my 01 z28 m6 in for a 4 wheel alignment, and discovered this:
Notice the attached illustration.
Everyone knows that the rear wheels of the car should track properly and evenly with the front. Well since I never installed sub-frame connectors and always drove the car hard. The rearend on my z28 is almost 13 degrees off center from the torque line. I have not installed any suspension or chassis parts except LCAs and comp eng rear shocks.
I don’t know much about this issue except that is not good, and its common for f-body cars to twist when under load.
What steps should I take in correcting this and in what order:
Allow the tire shop to recenter the rearend to be perpendicular with the torque line and parallel with front?
Or go to a body shop and see if the chassis needs to be straighten first, then have the tire shop align the rearend?
How common is this issue and how bad is my car twisted? Will aligning the rearend be enough to fix this as long as I install SFC right away afterwards to prevent this from happening again?
Any and all info is appreciated!!! I would like to know more about suspension and alignment!
This is proof that everyones first mod should be subframe connectors!!! After this issue is fixed I will be install subframe connectors and an adjustable pan hard bar.
This is new territory to me!
I took my 01 z28 m6 in for a 4 wheel alignment, and discovered this:
Notice the attached illustration.
Everyone knows that the rear wheels of the car should track properly and evenly with the front. Well since I never installed sub-frame connectors and always drove the car hard. The rearend on my z28 is almost 13 degrees off center from the torque line. I have not installed any suspension or chassis parts except LCAs and comp eng rear shocks.
I don’t know much about this issue except that is not good, and its common for f-body cars to twist when under load.
What steps should I take in correcting this and in what order:
Allow the tire shop to recenter the rearend to be perpendicular with the torque line and parallel with front?
Or go to a body shop and see if the chassis needs to be straighten first, then have the tire shop align the rearend?
How common is this issue and how bad is my car twisted? Will aligning the rearend be enough to fix this as long as I install SFC right away afterwards to prevent this from happening again?
Any and all info is appreciated!!! I would like to know more about suspension and alignment!
This is proof that everyones first mod should be subframe connectors!!! After this issue is fixed I will be install subframe connectors and an adjustable pan hard bar.
12-13-2005, 01:48 PM
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That's an awfully large angle for a car that's all hard
nonadjustable links. Just how do you suppose one
LCA got 11" shorter than the other (48" * sin(13))?
I'd for damn sure get another opinion. Preferably
from somebody, with nothing to sell you.
nonadjustable links. Just how do you suppose one
LCA got 11" shorter than the other (48" * sin(13))?
I'd for damn sure get another opinion. Preferably
from somebody, with nothing to sell you.
12-13-2005, 03:17 PM
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cool thanks!
that is what I was thinking about doing! I guess I should have worded it different, its not the thrust line that is off, its the rearend sits over the center line of the car, so it has a slight dog tail to it!
that is what I was thinking about doing! I guess I should have worded it different, its not the thrust line that is off, its the rearend sits over the center line of the car, so it has a slight dog tail to it!