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0305tur Part1boost06 Z

The numbers on the side of the block (arrow) indicate main bearing sizes. Using the factory service manual, you can take these numbers and decipher the bearing codes.
Subaru WRX Tuning Attack: EJ20 Engine Build

 The numbers on the side of the block (arrow) indicate main bearing sizes. Using the factory service manual, you can take these numbers and decipher the bearing codes.  View Related Article

 

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