Piston Ring, Engine

2005 Mazda MX-5 Miata L4-1.8L DOHCSECTION Piston Ring, Engine



Piston Ring
Piston Ring-to-Ring Groove Clearance
Top 0.030-0.065 mm (0.0012-0.0025 in)
Second 0.030-0.070 mm (0.0012-0.0027 in)
Oil (rail) 0.07-0.16 mm (0.003-0.006 in)
Maximum
Top, Second 0.15 mm (0.006 in)
Oil 0.20 mm (0.008 in)
End Gap (Measured in Cylinder)
Top 0.15-0.30 mm (0.006-0.011 in)
Second 0.30-0.45 mm (0.012-0.017 inch)
Oil (rail) 0.20-0.70 mm (0.008-0.027 inch)
Maximum 1.0 mm (0.039 inch)
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.