SPEC Specification2-9 67C3K11PistonPiston diameter (D) mm (in) 64.950–64.965 (2.5571–2.5577)Measuring point (H) mm (in) 2.0 (0.08)Piston clearance (*1) mm (in) 0.035–0.065 (0.0014–0.0026)Piston pin boss bore mm (in) 15.974–15.985 (0.6289–0.6293)Oversize piston diameter1st mm (in) 65.200–65.215 (2.5669–2.5675)2nd mm (in) 65.450–65.465 (2.5768–2.5774)Piston ring grooveTop ring mm (in) 1.21–1.23 (0.0476–0.0484)2nd ring mm (in) 1.51–1.53 (0.0594–0.0602)Oil ring mm (in) 2.52–2.54 (0.0992–0.1000)Piston pinOutside diameter mm (in) 15.965–15.970 (0.6285–0.6287)Piston ringTop ring BarrelDimension B mm (in) 1.17–1.19 (0.0461–0.0469)Dimension T mm (in) 2.30–2.50 (0.0906–0.0984)End gap (*1) mm (in) 0.15–0.30 (0.0059–0.0118)Side clearance mm (in) 0.02–0.06 (0.0008–0.0024)2nd ring TaperDimension B mm (in) 1.47–1.49 (0.0579–0.0587)Dimension T mm (in) 2.60–2.80 (0.1024–0.1102)End gap (*1) mm (in) 0.30–0.50 (0.0118–0.0197)Side clearance mm (in) 0.02–0.06 (0.0008–0.0024)Oil ringDimension B mm (in) 2.36–2.48 (0.0929–0.0976)Dimension T mm (in) 2.75 (0.1083)End gap (*1) mm (in) 0.20–0.70 (0.0079–0.0276)Side clearance mm (in) 0.04–0.18 (0.0016–0.0071)Connecting rodSmall end inside diameter mm (in) 15.985–15.998 (0.6293–0.6298)Big end inside diameter mm (in) 36.000–36.024 (1.4173–1.4183)Big end side clearance(*1) mm (in) 0.12–0.15 (0.0047–0.0059)Crankpin oil clearance(*1) mm (in) 0.020–0.052 (0.0008–0.0020)Big end bearing thicknessBlue mm (in) 1.494–1.498 (0.0588–0.0590)Black mm (in) 1.490–1.494 (0.0587–0.0588)Brown mm (in) 1.486–1.490 (0.0585–0.0587)(*1) The figures are for reference only.Item Unit ModelF30AMHD F40BMHD F40BWHD F40BEDTBTB
