we think we have cortina front hubs,can anyone inform us the correct spline dia of the studs,as the sierra/escort are too small.
cheers

Here is a pic of a sierra one, the cortina ones have two of the round castings shown at the bottom as they do not use the struts that the escort and sierra ones use.Hope this is of some help, the thread size and stud spacing of all three should be the same as you can normally fit wheels from one to another if the calipers dont catch on the inside of the wheel.
Rescued attachment sierra hub again.JPG

The calipers are different as well. The Cortina ones have a piston on both side of the disc where the Sierra ones only have one piston and a sliding caliper.
Hope that helps somewhat.
Pat...

Thanks guys,it looks like they are cortina hubs,but the sierra wheel studs are about 1mill smaller dia at the spline?
cheers

If you are using the Cortina front hubs and Sierra rears, you will need to replace the front studs with Sierra ones. If you intend to use alloys, replace them all with slightly longer ones than standard.
Pat....

[Edited on 29/2/04 by Avoneer]