Piston

Piston Diameter:
Reference Mark "1" 87.410 - 87.420 mm (3.4413 - 3.4417 in)
Reference Mark "2" 87.420 - 87.430 mm (3.4417 - 3.4421 in)
Reference Mark "3" 87.430 - 87.440 mm (3.4421 - 3.4425 in)

NOTE: Reference mark can be found stamped on top of the piston.

Piston Oil Clearance:
Standard 0.080 - 0.100 mm (0.0031 - 0.0039 in)
Minimum 0.120 mm (0.0047 in)

Piston Ring Groove Clearance:
No.1 and No.2 0.020 - 0.060 mm (0.0008 - 0.0024 in)

Piston Ring End Gap:
Standard:
No.1 0.250 - 0.450 mm (0.0098 - 0.0177 in)
No.2 0.350 - 0.500 mm (0.0138 - 0.0197 in)
Oil 0.150 - 0.550 mm (0.0059 - 0.0217 in)
Maximum
No.1 1.050 mm (0.0413 in)
No.2 1.100 mm (0.0433 in)
Oil 1.150 mm (0.0453 in)