Piston Ring: Specifications

2009 Chevrolet HHR L4-2.2LSECTION Specifications
PISTON RING END GAP
First Compression Ring 0.20-0.35 mm (0.008-0.014 in)
Second Compression Ring 0.35-0.55 mm (0.014-0.022 in)
Oil Control Ring - Rails 0.25-0.75 mm (0.010-0.030 in)

PISTON RING TO GROOVE CLEARANCE
First Compression Ring 0.04-0.08 mm (0.0015-0.0031 in)
Second Compression Ring 0.030-0.069 mm (0.0012-0.0027 in)
Oil Control Ring 0.058-0.207 mm (0.0023-0.0081 in)
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.