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Old 06-17-2019, 11:01 AM   #6
Scooby Specialist
Member#: 193940
Join Date: Nov 2008
Location: Philly
2004 WRX STI Black
RalliSpec Shortblock


Anyway you can stick a clean rag in the hole and hope to get some of those "particles" stuck to the rag so you can pull it out to see how hard they are? Don't want to scare you ahead of time but to me it almost looks like a busted ringland, and those particles are pcs of the ringland. No particles that should be normal. They can get stuck between the piston and cyl wall and rally score up the the walls. Plus you said the other 3 pistons looks dry with no particles?
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