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Old 11-14-2012, 11:38 AM   #3
MrHankey
Scooby Newbie
 
Member#: 90968
Join Date: Jul 2005
Chapter/Region: VIC
Location: Victoria, BC, Canada
Vehicle:
2003 WRX
WRB

Default

Any theories on what causes this? The only thing that comes to mind is a cold start, where the oil film that would normally separate the cam from the journal has been displaced due to the tension in the timing belt. Still does not explain why the matting cap is not similarly worn.
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