| I'm swapping out my auto turbine housings for 5 speed ones. I removed the bolts for the housings and used a rubber mallet to tap around the perimeter of the turbine housing to separate it from the CHRA but now it's way more difficult to spin the turbine shaft. There was some resistance spinning the metal cup that sits behind the turbine impeller. As I would spin it some black material would begin to come out. It looks like burnt oil that had been cooked behind that metal cup. Any ideas on how to fix this? 
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