Turbo vanes touching casing

[TobyTransit]

I have a noise when the vans on boost, it's more of a chuffing sound then anything else which I think might be injectors leaking. It's been doing it for 30k miles but has just started to feel down on power so I thought I should investigate. Yo start, I thought I'd test the turbo  so took the intake pipe off.
There is no in/out play and just a little side to side but I think the vanes may have contacted the case.

From what you can see in these awkward to take photos, is a little scuffing normal? Is this something to be concerned about?

[SirDavidAlhambra]

Good evening!

The blades are designed to run tight clearances. Do they actually touch, ie make a scraping noise when turned? Can you feel it touching?

Is there any play in the shaft?

Ooh err missus.

 

[johnnyroper]

Looking at leading edge of the blades there is some marking which is from dirty air. There will be some slight play side to side as it's a floating bearing and once oiled under pressure will be reduced.
If there's play to cause casing contact you will be able to move it in to the casing by hand.