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Home >> GMC >> 1993 >> Yukon V8-350 5.7L >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Block Assembly >> Piston, Engine >> Piston Ring Clearance
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Piston Ring Clearance


Compression Ring

Groove Clearance
Production
Top and 2nd Ring 0.0012"-0.0032"
Service Limit (High Limit Production) 0.001"

Gap
Production
Top Ring 0.0010"-0.0020"
2nd Ring 0.0018"-0.0026"
Service Limit (High Limit Production) 0.010"


Oil Control Ring

Groove Clearance
Production 0.002"-0.007"
Service Limit (High Limit Production) 0.001"

Gap
Production 0.010"-0.030"
Service Limit (High Limit Production) 0.010"