2-4 Unit: mm (in) Parts Item Standard Service limit Pistons Ring groove width Top 1.23 – 1.24 (0.0484 – 0.0488) 1.25 (0.0492) Second 1.24 – 1.25 (0.0488 – 0.0492) 1.25 (0.0492) Oil 2.005 – 2.025 (0.0789 – 0.0797) 2.05 (0.081) Piston pins Pin O.D.
21.961 – 21.965 (0.8646 – 0.8648) 21.953 (0.8643) Pin-to-pin bore clearance –0.005 – +0.002 (–0.0002 – +0.0001) 0.005 (0.0002) Piston rings Ring side clearance Top 0.045 – 0.070 (0.0018 – 0.0028) 0.13 (0.005) Second 0.040 – 0.065 (0.0016 – 0.0026) 0.13 (0.005) Ring end gap Top 0.20 – 0.35 (0.008 – 0.014) 0.6 (0.02) Second 0.50 – 0.65 (0.020 – 0.026) 0.75 (0.030) Oil 0.20 – 0.70 (0.008 – 0.028) 0.8 (0.031) Ring thickness Top 1.170 – 1.185 (0.0461 – 0.0467) – Second 1.175 – 1.190 (0.0463 – 0.0469) – Cylinder head Warpage – 0.05 (0.002) Min. Camshaft journal I.D. 29.000 – 29.024 (1.1417 – 1.1427) – Head height 103.95 – 104.05 (4.093 – 4.096) – Cylinder block Cylinder sleeve I.D.
A or I 87.01 – 87.02 (3.4256 – 3.4260) 87.07 (3.4279) B or II 87.00 – 87.01 (3.4252 – 3.4256) 87.07 (3.4279) Gap between upper and lower points – of sleeve I.D. – 0.05 (0.002) Warpage 0.07 (0.003) Max. 0.10 (0.004) Connecting rods Small end I.D. 23.969 – 23.982 (0.9437 – 0.9442) – Small end-to-piston pin clearance 0.005 – 0.015 (0.0002 – 0.0006) 0.02 (0.001) Big end axial clearance 0.15 – 0.35 (0.006 – 0.014) 0.4 (0.02) Connecting rod bearing oil clearance 0.032 – 0.066 (0.0013 – 0.0026) 0.077 (0.0030) Crankshaft Journal O.D. Main No. 1, 2, 4, 5 54.984 – 54.992 (2.1647 – 2.1650) – No.
3 54.976 – 55.000 (2.1644 – 2.1654) – Pin 47.976 – 48.000 (1.8888 – 1.8898) – Journal cylindricity 0.005 (0.0002) Max. 0.010 (0.0004) Journal roundness 0.005 (0.0002) Max. 0.010 (0.0004) Crankshaft runout 0.03 (0.001) Max. 0.04 (0.002) Crankshaft axial clearance 0.10 – 0.35 (0.004 – 0.014) 0.45 (0.018) Main bearing oil clearance No. 1, 2, 4, 5 0.017 – 0.041 (0.0007 – 0.0016) 0.05 (0.002) No. 3 0.025 – 0.049 (0.0010 – 0.0019) 0.055 (0.0022) Thrust metal side clearance 0.10 – 0.35 (0.004 – 0.014) 0.45 (0.018)