Commodore VT – VX Rear toe link conversion 12Th June 2002 Version 1.0
Base toe setting at standard height used range from –1.0 (toe out) mm to +3.0 (toe
in) mm per side! VX II models are adjustable via the toe control link with a very broad range to cover toe in and out.
The toe control links main advantage is in holding the toe setting through the
suspension movement arc (wheel travel). For example, earlier vehicles with a base setting of 0.0 mm or neutral toe would swing between +2.1 mm (toe in) at 40 mm bump to –3.8 mm (toe out) at 40 mm wheel droop. Later models with a base setting of 0.0 mm have next to no change on bump and will toe out by –1.8 mm at 30 mm of wheel droop.
The overall technical results are good and make a significant difference as we have mentioned before. Anyone serious about maximising their Commodore IRS’ performance would find these changes very worthwhile as they allow for much more predictable and stable rear dynamics while delivering a great deal more traction potential.
Assuming you wish to proceed, here are the issues (costs are lowest prices found at time of writing);
VX II uses a new cross member with separate part numbers for V6 and V8.
Holden spare parts retail price quoted as $280
VX II uses revised control arm assemblies with new style bushing fitted.
Common to both V6 and V8 and retail for $395 each from Holden. Note that VX series I control arm assemblies do NOT have machined section on hub to mount toe link. VT series I and II do however have these mount points machined.
Toe control links seem to be common to VT GTS and VX II and retail for $305
each. Allow an additional $5 to $10 for some high tensile mounting hardware for the cross-member end of the link.
The cross member is relatively cheap from Holden and hold the key in delivering the static camber improvement while featuring the very elaborate welded mounts for the control link. Whiteline could not offer these mounts as DIY weld options for that much less than the cost of a new cross-member and that still doesn’t address the changed pickup point issue.
There is some opportunity in Whiteline developing alternative toe links and we could probably supply them for half the price but this is a relatively small part of the cost equation as the overall labour component would be huge. The cross member would need to be removed completely so that the new mounts could be welded to it. This in itself would necessitate an engineer’s inspection, as it would qualify as a “major change” to the
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