Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA2005CIVIC L4-1.7L CNGREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
2005 Honda Civic L4-1.7L CNG
Piston Ring, Engine
2005 Honda Civic L4-1.7L CNGSECTION Piston Ring, Engine
Piston
Ring groove width
Top
Standard or New 1.020 - 1.030 mm (0.0402 - 0.0406 inch)
Service Limit 1.05 mm (0.041 inch)
Second
Standard or New 1.220 - 1.230 mm (0.0481 - 0.0484 inch)
Service Limit 1.25 mm (0.049 inch)
Oil
Standard or New 2.005 - 2.020 mm (0.0789 - 0.0795 inch)
Service Limit 2.05 mm (0.081 inch)
Piston ring
Ring-to-groove clearance
Top
Standard or New 0.035 - 0.060 mm (0.0014 - 0.0024 inch)
Service Limit 0.13 mm (0.005 inch)
Second
Standard or New 0.030 - 0.055 mm (0.0012 - 0.0022 inch)
Service Limit 0.13 mm (0.005 inch)
Ring end gap
Top
Standard or New 0.15 - 0.30 mm (0.006 - 0.012 inch)
Service Limit 0.60 mm (0.024 inch)
Second
Standard or New 0.30 - 0.45 mm (0.012 - 0.018 inch)
Service Limit 0.60 mm (0.024 inch)
Oil
Standard or New 0.20 - 0.70 mm (0.008 - 0.028 inch)
Service Limit 0.80 mm (0.031 inch)
Ring groove width
Top
Standard or New 1.020 - 1.030 mm (0.0402 - 0.0406 inch)
Service Limit 1.05 mm (0.041 inch)
Second
Standard or New 1.220 - 1.230 mm (0.0481 - 0.0484 inch)
Service Limit 1.25 mm (0.049 inch)
Oil
Standard or New 2.005 - 2.020 mm (0.0789 - 0.0795 inch)
Service Limit 2.05 mm (0.081 inch)
Piston ring
Ring-to-groove clearance
Top
Standard or New 0.035 - 0.060 mm (0.0014 - 0.0024 inch)
Service Limit 0.13 mm (0.005 inch)
Second
Standard or New 0.030 - 0.055 mm (0.0012 - 0.0022 inch)
Service Limit 0.13 mm (0.005 inch)
Ring end gap
Top
Standard or New 0.15 - 0.30 mm (0.006 - 0.012 inch)
Service Limit 0.60 mm (0.024 inch)
Second
Standard or New 0.30 - 0.45 mm (0.012 - 0.018 inch)
Service Limit 0.60 mm (0.024 inch)
Oil
Standard or New 0.20 - 0.70 mm (0.008 - 0.028 inch)
Service Limit 0.80 mm (0.031 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.