1D-85 Engine Mechanical:
Cylinder + Piston + Piston Ring
Unit: mm (in)
Conrod + Crankshaft
Unit: mm (in)
Item Standard Limit
Compression pressure
1 300 – 1 700 kPa
(13.0 – 17.0 kgf/cm
2
, 185 – 242 psi)
1 100 kPa
(11.0 kgf/cm
2
, 156 psi)
Compression pressure difference —
200 kPa
(2.0 kgf/cm
2
, 28 psi)
Piston-to-cylinder clearance 0.025 – 0.035 (0.0010 – 0.0014) 0.120 (0.0047)
Cylinder bore 81.000 – 81.015 (3.1890 – 3.1896) Nicks or Scratches
Piston diam.
80.970 – 80.985 (3.1878 – 3.1884)
Measure 20 mm (0.8 in) from the skirt end.
80.880 (3.1842)
Cylinder distortion — 0.05 (0.002)
Piston ring free end gap
1st — Approx. 6.5 (0.26) 5.2 (0.20)
2nd 2T Approx. 9.0 (0.35) 7.2 (0.28)
Piston ring end gap
1st — 0.06 – 0.18 (0.002 – 0.007) 0.5 (0.020)
2nd 2T 0.06 – 0.18 (0.002 – 0.007) 0.5 (0.020)
Piston ring-to-groove clearance
1st — 0.180 (0.0071)
2nd — 0.150 (0.0059)
Piston ring groove width
1st
0.83 – 0.85 (0.0327 – 0.0335)
1.30 – 1.32 (0.0512 – 0.0520)
—
2nd 1.01 – 1.03 (0.0398 – 0.0406) —
Oil 2.01 – 2.03 (0.0791 – 0.0799) —
Piston ring thickness
1st
0.76 – 0.81 (0.0299 – 0.0319)
1.08 – 1.10 (0.0425 – 0.0433)
—
2nd 0.97 – 0.99 (0.0382 – 0.0390) —
Piston pin bore I.D. 20.002 – 20.008 (0.7875 – 0.7877) 20.030 (0.7886)
Piston pin O.D. 19.996 – 20.000 (0.7872 – 0.7874) 19.980 (0.7866)
Item Standard Limit
Conrod small end I.D. 20.010 – 20.018 (0.7878 – 0.7881) 20.040 (0.7890)
Conrod big end side clearance 0.170 – 0.320 (0.0067 – 0.0126) 0.5 (0.02)
Conrod big end width 20.95 – 21.00 (0.825 – 0.827) —
Crank pin width 42.17 – 42.22 (1.660 – 1.662) —
Conrod big end oil clearance 0.032 – 0.056 (0.0013 – 0.0022) 0.080 (0.0031)
Crank pin O.D. 37.976 – 38.000 (1.4951 – 1.4961) —
Crankshaft journal O.D. 41.985 – 42.000 (1.6529 – 1.6535) —
Crankshaft runout — 0.05 (0.002)
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