Wishbone question, ie. strange camber issue

[pete95zhn]

I just got done some suspension mods to my C2, which already had M030 suspension and KW V3 coilovers. Now it got GT3 adjustable wishbones to all four corners, GT3 front strut supporting mounts and GT3 stabilizers. And some brake mods too, but that's not the issue here. A local shop did the installation ( I just didn't have time for that now ), but I took the car to the alignment myself.

While rears were easy to adjust to Kussmaul settings, fronts weren't. And aren't set. Now to the questions....before I start to check the installation myself, I need to know few things:

1. Should front wishbones be installed control arm attachment holes ( in the bushings ) aligned like this / \ or this \ / , when the direction to travel is ^ ?

2. At which camber values one shoud start using outer ( = not the center ) attachment holes? WSM only states "racing circuit values"...

3. What kind of camber values have you got with strut mounts modified to increased camber, ie. bolts switched over?

What I got from the alignment was: L camber 3.5, caster 7.8, R camber 3.0, caster 9.2. Strut mounts switched ( and set to minimum camber position ), 7mm shim at RH wishbone!, LH none... When I got home, I checked data sheet from the previous owner ( from year 2005 ), cambers were at 1.0 but casters had almost a 1 deg difference, similar to present. Something's not right, but I'm ( among with the shop ) pretty sure that the car's not been hit.

Rears are aligned beautifully at 2.3 deg camber with 4mm shims.

Car height is measured per WSM Group 4 / 44 Wheels, tyres, suspension alignment / Vehicle height, p.144 . Rear is about 5mm higher than factory recommended height, front is about 20mm higher.

Edited July 11, 2009 by pete95zhn