2 replies to this topic

[Toranamat69]

During my investigations on the UC front end, I have noticed that the lower control arm does not have an 'axis' as such, if you draw a straight line through the mounting holes for the front bush, it does not line up with the mounting holes for the rear bush on the same lower control arm

The rear bush is approximately 1/2" lower than the axis for the front bushing.

Since I plan to use Del-a-lum bushings in this front end - they will not tolerate this type of missalignment and require the lower control arm to pivot nicely about a proper axis.

I do not see why it was designed this way. Would definately contribute to making undue noise when using polyurethane bushes as the bushes must skew sideways to allow the control arm to pivot.

Does anyone know why Holden would have designed this into the suspension system.

I know it would basically give you a variable spring rate type of effect as soon as the control arm moved away from the horizintal but why not just achieve this with the correct spring and shock combo?

M@

[Litre8]

Some sort of anti-dive effect or is that just for the upper control arrm?

[Toranamat69]

I don't know, I'll have to keep scoping around.

M@