"""Has anyone changed just the blades on this application?"""

Do these things need balancing? I don't know for sure, but something that spins at 20,000 rpm, might need some specialist attention.

We have changed a few of these turbo's now. We insist on replacing the oil feed & return pipes & the sump has to come off too, so that the strainer can be assessed.

These needs to be treated like a heart transplant. If you cut corners then the victim will die

Cheers

Dave