Piston Ring, Engine

2005 Chevrolet TrailBlazer 4WD V8-5.3L VIN MSECTION Piston Ring, Engine
Piston Ring End Gap - Measured in Cylinder Bore
First Compression Ring
Production 0.23 - 0.44 mm (0.009 - 0.017 in)
Service 0.23 - 0.5 mm (0.009 - 0.0196 in)

Second Compression Ring
Production 0.44 - 0.7 mm (0.017 - 0.027 in)
Service 0.44 - 0.76 mm (0.0173 - 0.03 in)

Oil Control Ring
Production 0.18 - 0.75 mm (0.007 - 0.029 in)
Service 0.18 - 0.81 mm (0.007 - 0.032 in)

Piston Ring-to-Groove Clearance
First Compression Ring
Production 0.04 - 0.085 mm (0.00157 - 0.00335 in)
Service 0.04 - 0.085 mm (0.00157 - 0.00335 in)

Second Compression Ring
Production 0.04 - 0.078 mm (0.00157 - 0.0031 in)
Service 0.04 - 0.078 mm (0.00157 - 0.0031 in)

Oil Control Ring
Production 0.012 - 0.2 mm (0.0005 - 0.0078 in)
Service 0.012 - 0.2 mm (0.0005 - 0.0078 in)
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.