sierra rear suspension set up

[Richard Dryden]

Hello all,
Have finally got around to tacking up the rear suspension brackets around the diff housing. Anyway on tacking it all up fastened wheels and uprights in place but wanted some way of checking that the rear wheels are running true before fully welding brackets in place, do the rear wheels run with any toe in or out and is there any way to check there allignment ? Also when checking the allignment how do you account for the small amount of slack in the crush tubes / mounting brackets? Hope this is about as clear as mud.

Many thanks Richard

[Talonmotorsport]

When I put the brackets on I run a 4 mtr length of material down the length of the chassis to make sure they are pointing straight down the chassis. You will not be able to adjust/shim the toe untill you have the car on it's wheels with the coilovers on, the ride height set and the bolts done up tight on the crush tubes. There is no point in doing this then taking the car apart to paint it, if you get the brackets correct it gives you a starting point to work from.
As you say there is slack in the parts or in engineering terms 'clearance' and due to the all the little small errors built in to the parts it all adds up to the misalinement. You can shim the bearing carriers to correct the toe, as for which direction they should point I always thought RWD cars where dead ahead on the rear and it depends what side of the upright the rack was on the front.

[alga]

With Sierra's semi-trailing arms rear toe angle changed on suspension movement, with no dire results!

[MikeB]

I roughly checked mine like talon suggested with it all tacked in place.
It can be adjusted with shims once its all together.
You want a small amount of toe in 0.1deg, never toe out unless you like the back of hedges.

M

[Richard Dryden]

Thanks for the replies all very helpfull, more confident in frying it up solid know.