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Old 09-14-2021, 12:36 PM   #3
Scooby Specialist
Member#: 193940
Join Date: Nov 2008
Location: Philly
2004 WRX STI Black
RalliSpec Shortblock


Those are casting marks. Its when molted metal like aluminum (what the SB is make out of) is purred, the metal over lays itself when its cooled to quickly. Mostly cosmetic.
Yes that is normal.
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Last edited by BlackFighter; 09-14-2021 at 12:43 PM.
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