Honda Workshop Service and Repair Manuals

Piston: Specifications

Diameter:[1]

Standard (New): 80.98-80.99 mm (3.1882-3.1886 inch)
Service Limit: 80.97 mm (3.1878 inch)

Oversized Piston Diameter:

0.25: 81.23-81.24 mm (3.1980-3.1984 inch)

Piston-To-Cylinder Clearance:

Standard (New): 0.010-0.040 mm (0.0004-0.0016 inch)
Service Limit 0.05 mm (0.002 inch)

Ring Groove Width

Top:

Standard (New) .........................................................................................................................................  1.030-1.040 mm (0.0406-0.0409 inch)
Service Limit ...................................................................................................................................................................  1.060 mm (0.0417 inch)

Second

Standard (New) ................................................................................................................................................  1.230-1.240 (0.0484-0.0488 inch)
Service Limit ...................................................................................................................................................................  1.260 mm (0.0496 inch)

Oil

Standard (New) .........................................................................................................................................  2.805-2.820 mm (0.1104-0.1110 inch)
Service Limit ...................................................................................................................................................................  2.840 mm (0.1118 inch)

[1]  Measure at distance A as shown in the illustration.