I know this question has been asked before in different ways, but no satisfactory answer has been forthcoming.

As I need to know I thought I would try again!

So .... how far should a steering column be capable of collapsing to conform to IVA definition of collapsible?

My Sierra column came as two separate pieces and I don't know how far to shove the triangular bit up the round bit. I have read of cars being failed on columns not having enough collapsing travel but no measurements have ever been given.

The amount the triangular bit sticks out is in the Haynes Sierra manual I think (? some one will confirm I'm sure) and as it's type approved collapsible column that should be all you need to know (or maybe this is a new IVA thing?). If your worried ring up VOSA to see what the need very helpful on the phone.

Also I think having two UJ's and them being offset further down helps as well (I think in the SVA this might have been enough, might be worth looking at the IVA manual, the column may not have then needed to collapse when this offset is present, but can't be sure with out reading the manual).

Dan

[Edited on 20/10/10 by Bluemoon]

[Edited on 20/10/10 by Bluemoon]

According to my Haynes Sierra manual for 1982 to 1985 models, the triangular bit sticks out of the outer column by 18.6cm to 19.2cm, but I don't know if thats different for later or earlier columns.

Thanks SteveWallace ... at last an actual number I can work with !! I can now get my steering finished.

For SVA two offset uj's alone were definitely enough down here.