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 MANUALSCHEVROLET1998METRO L4-079 1.3L VIN 2 MFIREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON, ENGINE
1998 Chevrolet Metro L4-079 1.3L VIN 2 MFI
Piston, Engine
1998 Chevrolet Metro L4-079 1.3L VIN 2 MFISECTION Piston, Engine
Piston-to-Cylinder Bore Clearance 0.02-0.04 (0.0008-0.0015 inches)
Piston Diameter Standard Stamp 1 73.980-79.990 mm (2.9126-2.9130 inches)
Piston Diameter Standard Stamp 2 73.970-73.980 mm (2.912-2.9126 inches)
Piston Diameter 0.25 mm (0.0098 inches)
Oversize Piston 74.220-74.230 mm (2.9220-2.9224 inches)
Piston Diameter 0.50 mm (0.0196 inches)
Oversize Piston 74.470-74.480 mm (2.9319-2.9323 inches)
Piston Ring End Gap Top Ring (Standard) 0.15-0.30 mm (0.0059-0.0118 inches)
Piston Ring End Gap Top Ring (Maximum) 0.7 mm (0.0275 inches)
Piston Ring End Gap Lower Ring (Standard) 0.2-0.35 mm (0.0079-0.0137 inches)
Piston Ring End Gap Lower Ring (Maximum) 0.7 mm (0.0275 inches)
Piston Ring End Gap Oil Ring (Standard) 0.2-0.6 mm (0.0079-0.0236 inches)
Piston Ring End Gap Oil Ring (Maximum) 1.7 mm (0.0669 inches)
Piston Ring Groove Clearance:
Upper Compression Ring 0.03-0.07 mm (0.0012-0.0027 inches)
Piston Ring Groove Clearance:
Lower Compression Ring 0.02-0.06 mm (0.0008-0.0023 inches)
Piston Pin Diameter 18.997-19.000 mm (0.7479-0.7480 inches)
Piston Pin to Connecting Rod Clearance:
(Standard) 0.003-0.016 mm (0.0001-0.0006 inches)
Piston Pin to Connecting Rod Clearance:
(Maximum) 0.050 mm (0.0020 inches)
Piston Diameter Standard Stamp 1 73.980-79.990 mm (2.9126-2.9130 inches)
Piston Diameter Standard Stamp 2 73.970-73.980 mm (2.912-2.9126 inches)
Piston Diameter 0.25 mm (0.0098 inches)
Oversize Piston 74.220-74.230 mm (2.9220-2.9224 inches)
Piston Diameter 0.50 mm (0.0196 inches)
Oversize Piston 74.470-74.480 mm (2.9319-2.9323 inches)
Piston Ring End Gap Top Ring (Standard) 0.15-0.30 mm (0.0059-0.0118 inches)
Piston Ring End Gap Top Ring (Maximum) 0.7 mm (0.0275 inches)
Piston Ring End Gap Lower Ring (Standard) 0.2-0.35 mm (0.0079-0.0137 inches)
Piston Ring End Gap Lower Ring (Maximum) 0.7 mm (0.0275 inches)
Piston Ring End Gap Oil Ring (Standard) 0.2-0.6 mm (0.0079-0.0236 inches)
Piston Ring End Gap Oil Ring (Maximum) 1.7 mm (0.0669 inches)
Piston Ring Groove Clearance:
Upper Compression Ring 0.03-0.07 mm (0.0012-0.0027 inches)
Piston Ring Groove Clearance:
Lower Compression Ring 0.02-0.06 mm (0.0008-0.0023 inches)
Piston Pin Diameter 18.997-19.000 mm (0.7479-0.7480 inches)
Piston Pin to Connecting Rod Clearance:
(Standard) 0.003-0.016 mm (0.0001-0.0006 inches)
Piston Pin to Connecting Rod Clearance:
(Maximum) 0.050 mm (0.0020 inches)
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.