MECHANICAL(H4DOTC DIESEL) > General Description
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Engine |
Model |
2.0 L | |||
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Cylinder arrangement |
Horizontally opposed, liquid cooled, 4-cylinder, 4 stroke diesel engine | ||||
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Valve system mechanism |
Chain driven, double overhead camshaft, 4-valve/cylinder | ||||
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Bore × Stroke |
mm (in) |
86 × 86 (3.3858 × 3.3858) | |||
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Displacement |
cm3 (cu in) |
1998 (121.92) | |||
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Compression ratio |
16.0 | ||||
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Compression pressure (200 — 300 rpm) |
MPa (kgf/cm2, psi) |
2.4 (24.5, 348) | |||
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Number of piston rings |
Pressure ring: 2, Oil ring: 1 | ||||
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Intake valve timing |
Open |
TDC 0° | |||
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Close |
ABDC 16° | ||||
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Exhaust valve timing |
Open |
BBDC 22° | |||
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Close |
TDC 0° | ||||
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Valve clearance |
mm (in) |
Intake |
0.13 — 0.20 (0.0051 — 0.0079) | ||
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Exhaust |
0.18 — 0.25 (0.0071 — 0.0098) | ||||
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Idle speed |
rpm |
No load |
800±100 | ||
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A/C ON |
800±100 | ||||
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Ignition order |
1 → 3 → 2 → 4 | ||||
NOTE:
OS: Oversize US: Undersize
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Camshaft |
Bending limit |
mm (in) |
0.020 (0.0008) | ||
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Cam lobe height |
mm (in) |
Intake |
Standard |
36.46 — 36.56 (1.4354 — 1.4394) | |
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Exhaust |
Standard |
36.58 — 36.68 (1.4402 — 1.4441) | |||
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Cam base circle diameter |
mm (in) |
32.0 (1.260) | |||
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Journal O.D. |
mm (in) |
Standard |
22.946 — 22.963 (0.9034 — 0.9041) | ||
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Oil clearance |
mm (in) |
Standard |
0.037 — 0.072 (0.0015 — 0.0028) | ||
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Thrust clearance |
mm (in) |
Standard |
0.045 — 0.105 (0.0018 — 0.0041) | ||
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Cylinder head |
Warping limit (Mating surface with cylinder block) |
mm (in) |
0.035 (0.0014) | ||
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Standard height |
mm (in) |
110.7 (4.36) | |||
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Valve seat |
Seating angle between valve and valve seat |
90° | |||
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Contacting width between valve and valve seat |
mm (in) |
Intake |
Standard |
1.4 — 2.1 (0.0551 — 0.0827) | |
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Exhaust |
Standard |
1.4 — 2.1 (0.0551 — 0.0827) | |||
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Valve guide |
Inside diameter |
mm (in) |
6.000 — 6.012 (0.2362 — 0.2367) | ||
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Valve guide protrusion amount |
mm (in) |
9.1 — 9.5 (0.3583 — 0.3740) | |||
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Valve |
Head edge thickness |
mm (in) |
Intake |
Standard |
1.0 (0.0394) |
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Exhaust |
Standard |
1.0 (0.0394) | |||
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Stem outer diameter |
mm (in) |
Intake |
5.965 — 5.980 (0.2348 — 0.2354) | ||
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Exhaust |
5.955 — 5.970 (0.2344 — 0.2350) | ||||
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Clearance between the valve guide and valve stem |
mm (in) |
Intake |
Standard |
0.020 — 0.047 (0.0008 — 0.0020) | |
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Exhaust |
Standard |
0.030 — 0.057 (0.0012 — 0.0022) | |||
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Overall length |
mm (in) |
Intake |
81.6 (3.2126) | ||
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Exhaust |
80.4 (3.1653) | ||||
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Valve spring |
Free length |
mm (in) |
39.37 (1.5500) | ||
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Squareness |
2.5°, 1.6 mm (0.0629 in) or less | ||||
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Tension/spring height |
N (kgf, lb)/mm (in) |
Set |
174 — 200 (17.7 — 20.4, 39.1 — 45.0)/28.92 (1.1386) | ||
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Lift |
330 — 370 (33.6 — 37.7, 74.2 — 83.2)/19.92 (0.7843) | ||||
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Cylinder block |
Warping limit (Mating surface with cylinder head) |
mm (in) |
0.020 (0.0008) | ||
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Standard height |
mm (in) |
220 (8.6614) | |||
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Cylinder inner diameter |
mm (in) |
Standard |
A |
86.005 — 86.015 (3.3860 — 3.3864) | |
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B |
85.995 — 86.005 (3.3856 — 3.3860) | ||||
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Cylindricality |
mm (in) |
Standard |
0.030 (0.0012) | ||
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Out-of-roundness |
mm (in) |
Standard |
0.010 (0.0004) | ||
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Piston clearance |
mm (in) |
Standard |
0.055 — 0.075 (0.0022 — 0.0030) | ||
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Cylinder inner diameter boring limit |
mm (in) |
To 86.505 (3.4057) | |||
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Amount of piston protrusion from the cylinder block end face |
mm (in) |
Minimum value |
0.200 (0.0079) | ||
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Maximum value |
0.400 (0.0157) | ||||
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Piston |
Piston grade point |
mm (in) |
53.3 (2.0984) | ||
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Outer diameter |
mm (in) |
Standard |
A |
85.94 — 85.95 (3.3835 — 3.3839) | |
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B |
85.93 — 85.94 (3.3831 — 3.3835) | ||||
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0.25 (0.0098) OS |
86.18 — 86.20 (3.3929 — 3.3937) | ||||
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0.50 (0.0197) OS |
86.43 — 86.45 (3.4027 — 3.4035) | ||||
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Piston pin |
Degree of fit |
Piston pin must be fitted into position with thumb at 20°C (68°F). | |||
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Clearance between piston pin hole and piston pin |
mm (in) |
Standard |
0.012 — 0.026 (0.0005 — 0.0010) | ||
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Piston ring |
Piston ring gap |
mm (in) |
Top ring |
Standard |
0.20 — 0.30 (0.0079 — 0.0118) |
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Second ring |
Standard |
0.45 — 0.60 (0.0177 — 0.0236) | |||
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Oil ring |
Standard |
0.20 — 0.45 (0.0079 — 0.0177) | |||
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Clearance between piston ring and piston ring groove |
mm (in) |
Top ring |
Standard |
0.07 — 0.13 (0.0028 — 0.0051) | |
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Second ring |
Standard |
0.04 — 0.08 (0.0016 — 0.0031) | |||
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Connecting rod and connecting rod bearing |
Bend or twist per 100 mm (3.9370 in) in length |
mm (in) |
Limit |
0.10 (0.0039) | |
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Thrust clearance |
mm (in) |
Standard |
0.070 — 0.330 (0.0028 — 0.0130) | ||
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Oil clearance |
mm (in) |
Standard |
0.017 — 0.050 (0.0007 — 0.0020) | ||
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Bearing size (Thickness at center) |
mm (in) |
Standard |
1.992 — 2.008 (0.0784 — 0.0791) | ||
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0.03 (0.0012) US |
2.010 — 2.018 (0.0791 — 0.0794) | ||||
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0.05 (0.0020) US |
2.020 — 2.028 (0.0795 — 0.0798) | ||||
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0.25 (0.0098) US |
2.120 — 2.128 (0.0835 — 0.0838) | ||||
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Bushing of small end |
Clearance between piston pin and bushing |
mm (in) |
Standard |
0.012 — 0.036 (0.0005 — 0.0014) | |
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Crankshaft and crankshaft bearing |
Bending limit |
mm (in) |
0.035 (0.0014) | ||
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Crank pin |
Out-of-roundness |
mm (in) |
0.005 (0.0002) | ||
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Cylindricality |
mm (in) |
0.006 (0.0002) | |||
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Grinding limit (dia.) |
mm (in) |
To 54.750 (2.1555) | |||
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Crank journal |
Out-of-roundness |
mm (in) |
0.005 (0.0002) | ||
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Cylindricality |
mm (in) |
0.006 (0.0002) | |||
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Grinding limit (dia.) |
mm (in) |
To 66.758 (2.6283) | |||
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Crank pin outer diameter |
mm (in) |
Standard |
54.976 — 55.000 (2.1644 — 2.1654) | ||
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0.03 (0.0012) US |
54.946 — 54.970 (2.1632 — 2.1642) | ||||
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0.05 (0.0020) US |
54.926 — 54.950 (2.1624 — 2.1634) | ||||
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0.25 (0.0098) US |
54.726 — 54.750 (2.1546 — 2.1555) | ||||
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Crank journal outer diameter |
mm (in) |
Standard |
66.992 — 67.016 (2.6375 — 2.6384) | ||
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0.03 (0.0012) US |
66.962 — 66.986 (2.6363 — 2.6372) | ||||
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0.05 (0.0020) US |
66.942 — 66.966 (2.6355 — 2.6365) | ||||
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0.25 (0.0098) US |
66.742 — 66.766 (2.6276 — 2.6286) | ||||
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Bearing size (Thickness at center) mm (in) |
#1, #2, #3, #4 |
Standard |
1.981 — 2.005 (0.0779 — 0.0789) | ||
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0.03 (0.0012) US |
2.007 — 2.010 (0.0790 — 0.0791) | ||||
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0.05 (0.0020) US |
2.017 — 2.020 (0.0794 — 0.0795) | ||||
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0.25 (0.0098) US |
2.117 — 2.120 (0.0833 — 0.0835) | ||||
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#5 |
Standard |
1.982 — 2.006 (0.0780 — 0.0790) | |||
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0.03 (0.0012) US |
2.012 — 2.015 (0.0792 — 0.0793) | ||||
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0.05 (0.0020) US |
2.022 — 2.025 (0.0796 — 0.0797) | ||||
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0.25 (0.0098) US |
2.122 — 2.125 (0.0835 — 0.0837) | ||||
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Thrust clearance |
mm (in) |
Standard |
0.030 — 0.115 (0.0012 — 0.0045) | ||
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Oil clearance |
mm (in) |
#1, #2, #3, #4, #5 |
Standard |
0.020 — 0.040 (0.0008 — 0.0016) | |