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Old 11-21-2012, 09:27 AM   #13
Zackbo
Scooby Specialist
 
Member#: 43151
Join Date: Sep 2003
Chapter/Region: South East
Location: Charlotte, NC
Vehicle:
04 STI
Kinda Silver-ish

Default

I understand the importance of cleaning and/or replacing the oil pump, oil cooler, etc. when rebuilding a motor with a spun rod bearing, but the fact is almost all spun rod bearings are due to incorrect clearance, heat expansion, or oil starvation; not a piece of debris in the oil getting in between the clearance area . Flame suit on, but it's just a fact.

I've taken apart a many a spun rod bearing motor, ones that were ran a good while after the initial failure. The other surviving bearings did have scuff marks from the debris in the oil, but none ever spun due to the debris.
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