01-30-2012, 07:59 AM
Join Date: Jul 2009
Location: Southeast PA
Having some weird rear toe issues... maybe someone can explain what is causing this effect...
Essentially, I think one of my aluminum bulkheads for the rear inner hinge pins is bent, but I've looked at them on the board and don't see anything noticable, but when I shim the car for a certain rear toe, let's say 2*, the left side will show me 1* and the right side shows me 1.7*...
Here's what's even weirder...
I figured I would try to shim the left side to match the right side, so I took all the toe shims out and put it on the setup station. Left side is 0* and right side is 1* (1* is right, the hubs have a 1* toe built in right?) So in theory, if I add a 0.75 shim to the left side and leave the right side as it is, they should both end up at 1*. Well, that's not the case. The left side will shim to about 0.5* and the right side is now at 1.5*.
Why is the right side toe affected by adjusting the shimming on the left side?
I then added a 0.4 shim to the left side, and this brings in the left side to just under 1*, but now the right side is at 2.25*.
I then add a 0.75 shim to the left side (so now there's 2x0.75 shims and 1x0.40 shims on the left side, nothing on the right side) and the toe is dead on at 2* each side.
Took a 0.75 shim out of the left, put it in the right side (now 0.75 and 0.40 on left, 0.75 on right), and I get ~1.75* toe on the left side and 2.25* of toe on the right side.
What it looks like, is that shimming the left side is also affecting the right side. Something really weird is going on here...
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