How hard can it be ?
Rotor in a petrol turns at 120,000 revs or there abouts and exhaust turbine temp is hot enough to melt glass and there is the added problem of passing oil through the bearing,ask me how I know,just rebuilt an engine and after carefull check on the bench of turbo that looked ok and oil pressure from new pump blew it.
If you placed an intercooler on the pressure side it will not pass bits into the engine.
