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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,040
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That's a good question Jim. I have some show and tell and you can draw your own conclusions (I've drawn mine).


In this exhibit the "mechanic" who rebuilt this engine thinks more is better when it comes to silicon on the oil line gaskets that should be installed dry. This snotball ended up blocking the turbo oil journal.




This is what is left of a washer that apparently fell into the header. Result was something like what Rocket posted. Cheap header FOD will do the same thing.




And this is why you put the O2 sensor after the turbo. Yes I'm sure breakage is rare but the results are devastating! It appears the O2 sensor tip jammed the turbine wheel causing the shaft to break and the wheel to explode.

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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
Old 11-04-2010, 08:59 PM
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