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I've seen turbine wheels that look like they have been sandblasted. Those are not necessarily the dangerous ones, it's when the bearings go out and shaft play becomes so bad that the wheel can touch the housing by bouncing around that can cause catastrophic failure.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
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