Quote:
Originally Posted by sixto
"I rebuilt the turbo" makes me nervous. The rotating assembly has to be precisely balanced because it spins something like 30-50K rpm at full tilt. If you moved the turbine wheel relative to the compressor wheel, it's possible the imbalance is causing one of the wheels, likely the compressor wheel, to scrape the compressor housing.
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Two problems.
1, You are about 100,000rpm off.
2, The compressor wheel and turbine/shaft are balanced independently, you can put them on at any position without causing imbalance. If they needed to be put on at a specific orientation there would be a key on the shaft to align them.