MECHANICAL(H4DO 1.5) > General Description
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Engine |
Model |
1.5 L | |||||
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Cylinder arrangement |
Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine | ||||||
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Valve system mechanism |
Belt driven, double overhead camshaft, 4-valve/cylinder | ||||||
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Bore × Stroke |
mm (in) |
77.7 × 79.0 (3.06 × 3.11) | |||||
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Displacement |
cm3 (cu in) |
1,498 (91.39) | |||||
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Compression ratio |
10.1 | ||||||
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Compression pressure (at 200 — 300 rpm) |
kPa (kgf/cm2, psi) |
Standard |
1,100 — 1,300 (11.2 — 13.3, 160 — 189) | ||||
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Number of piston rings |
Pressure ring: 2, Oil ring: 1 | ||||||
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Intake valve timing |
Open |
Max. retard |
3° ATDC | ||||
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Min. advance |
47° BTDC | ||||||
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Close |
Max. retard |
55° ABDC | |||||
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Min. advance |
5° ABDC | ||||||
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Exhaust valve timing |
Open |
16° BBDC | |||||
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Close |
12° ATDC | ||||||
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Valve clearance |
mm (in) |
Inspection value |
Intake |
0.20+0.04 −0.06 (0.0079+0.0016 −0.0024) | |||
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Exhaust |
0.35±0.05 (0.0138±0.0020) | ||||||
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Adjustment value |
Intake |
0.20+0.01 −0.03 (0.0079+0.0004 −0.0012) | |||||
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Exhaust |
0.35±0.02 (0.0138±0.0008) | ||||||
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Idling speed (Select lever is in “P” or “N” range on AT model; Gear shift lever is in neutral position on MT model.) |
rpm |
No load |
Standard |
650±50 | |||
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A/C ON (model with A/C) |
When the compressor load is low |
Standard |
775±50 | ||||
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When the compressor load is high |
Standard |
850±50 | |||||
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Ignition order |
1 → 3 → 2 → 4 | ||||||
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Ignition timing |
BTDC/rpm |
Standard |
15°±10°/650 | ||||
NOTE:
OS: Oversize US: Undersize
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Belt tension adjuster |
Adjuster rod protrusion amount |
mm (in) |
5.2 — 6.2 (0.205 — 0.244) | |||
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Camshaft |
Bend limit |
mm (in) |
0.020 (0.00079) | |||
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Cam lobe height |
mm (in) |
Intake |
Standard |
46.15 — 46.25 (1.817 — 1.821) | ||
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Exhaust |
44.55 — 44.65 (1.754 — 1.758) | |||||
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Cam base circle diameter |
mm (in) |
Standard |
37.0 (1.457) | |||
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Journal O.D. |
mm (in) |
Front |
Standard |
37.946 — 37.963 (1.4939 — 1.4946) | ||
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Center, rear |
29.946 — 29.963 (1.1790 — 1.1797) | |||||
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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 |
0.068 — 0.116 (0.0027 — 0.0046) | |||
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Cylinder head |
Warping limit (mating surface with cylinder block) |
mm (in) |
0.035 (0.0014) | |||
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Grinding limit |
mm (in) |
0.3 (0.012) | ||||
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Standard height |
mm (in) |
127.5 (5.02) | ||||
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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 |
0.6 — 1.4 (0.024 — 0.055) | ||
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Exhaust |
1.2 — 1.8 (0.047 — 0.071) | |||||
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Valve guide |
Clearance between the valve guide and valve stem |
mm (in) |
Intake |
Standard |
0.030 — 0.057 (0.0012 — 0.0022) | |
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Exhaust |
0.040 — 0.067 (0.0016 — 0.0026) | |||||
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Inside diameter |
mm (in) |
6.000 — 6.012 (0.2362 — 0.2367) | ||||
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Valve stem outer diameters |
mm (in) |
Intake |
5.955 — 5.970 (0.2344 — 0.2350) | |||
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Exhaust |
5.945 — 5.960 (0.2341 — 0.2346) | |||||
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Valve guide protrusion amount |
mm (in) |
15.8 — 16.2 (0.622 — 0.638) | ||||
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Valve |
Head edge thickness |
mm (in) |
Intake |
Standard |
1.0 — 1.4 (0.039 — 0.055) | |
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Exhaust |
1.0 — 1.4 (0.039 — 0.055) | |||||
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Overall length |
mm (in) |
Intake |
104.45 (4.112) | |||
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Exhaust |
105.7 (4.161) | |||||
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Valve spring |
Free length |
mm (in) |
59.37 (2.337) | |||
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Tension/spring height |
N (kgf, lbf)/mm (in) |
Set |
232 — 268 (23.7 — 27.3, 52.2 — 60.2)/ 36.0 (1.417) | |||
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Lift |
356 — 394 (36.3 — 40.2, 80.0 — 88.6)/ 25.7 (1.01) | |||||
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Squareness |
mm (in) |
2.5°, 2.6 (0.102) or less | ||||
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Valve lifter |
Outer diameter |
mm (in) |
Standard |
32.959 — 32.975 (1.2976 — 1.2982) | ||
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Valve lifter mating surface inner diameter |
mm (in) |
Standard |
32.994 — 33.016 (1.2990 — 1.2998) | |||
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Valve lifter and valve lifter mating surface clearance |
mm (in) |
Standard |
0.019 — 0.057 (0.0007 — 0.0022) | |||
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Cylinder block |
Warping limit (mating surface with cylinder head) |
mm (in) |
0.025 (0.00098) | |||
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Grinding limit |
mm (in) |
0.1 (0.004) | ||||
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Standard height |
mm (in) |
201.0 (7.91) | ||||
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Cylindricality |
mm (in) |
Standard |
0.015 (0.0006) | |||
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Out-of-roundness |
mm (in) |
Standard |
0.010 (0.0004) | |||
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Clearance between cylinder and piston at 20°C (68°F) |
mm (in) |
Standard |
−0.010 — 0.010 (−0.00039 — 0.00039) | |||
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Cylinder inner diameter boring limit (diameter) |
mm (in) |
To 78.205 (3.079) | ||||
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Piston |
Piston grade point |
mm (in) |
38.0 (1.496) | |||
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Outer diameter |
mm (in) |
Standard |
A |
77.705 — 77.715 (3.0593 — 3.0596) | ||
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B |
77.695 — 77.705 (3.0589 — 3.0593) | |||||
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0.25 (0.0098) OS |
77.945 — 77.965 (3.0687 — 3.0695) | |||||
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0.50 (0.0197) OS |
78.195 — 78.215 (3.0785 — 3.0793) | |||||
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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 |
0.004 — 0.008 (0.0002 — 0.0003) | |||
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Piston ring |
Piston ring gap |
mm (in) |
Top ring |
Standard |
0.20 — 0.35 (0.0079 — 0.0138) | |
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Second ring |
Standard |
0.35 — 0.50 (0.0138 — 0.0197) | ||||
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Oil ring |
Standard |
0.20 — 0.50 (0.0079 — 0.0197) | ||||
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Clearance between piston ring and piston ring groove |
mm (in) |
Top ring |
Standard |
0.040 — 0.080 (0.0016 — 0.0031) | ||
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Second ring |
Standard |
0.030 — 0.070 (0.0012 — 0.0028) | ||||
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Connecting rod and connecting rod bearing |
Bend or twist per 100 mm (3.94 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 |
0.016 — 0.044 (0.00063 — 0.0017) | |||
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Bearing size (Thickness at center) |
mm (in) |
Standard |
1.492 — 1.501 (0.0587 — 0.0591) | |||
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0.03 (0.0012) US |
1.510 — 1.513 (0.0594 — 0.0596) | |||||
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0.05 (0.0020) US |
1.520 — 1.523 (0.0599 — 0.0600) | |||||
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0.25 (0.0098) US |
1.620 — 1.623 (0.0638 — 0.0639) | |||||
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Bushing of small end |
Clearance between piston pin and bushing |
mm (in) |
Standard |
0 — 0.022 (0 — 0.0009) | ||
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Crankshaft and crankshaft bearing |
Bending limit |
mm (in) |
0.035 (0.0014) | |||
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Crank pin |
mm (in) |
Out-of-roundness |
0.003 (0.0001) | |||
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Cylindricality |
0.004 (0.0002) | |||||
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Grinding limit value (dia.) |
To 51.750 (2.0374) | |||||
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Crank journal |
mm (in) |
Out-of-roundness |
0.005 (0.0002) | |||
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Cylindricality |
0.006 (0.0002) | |||||
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Grinding limit value (dia.) |
To 59.758 (2.3527) | |||||
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Crank pin outer diameter |
mm (in) |
Standard |
51.984 — 52.000 (2.0466 — 2.0472) | |||
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0.03 (0.0012) US |
51.954 — 51.970 (2.0454 — 2.0461) | |||||
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0.05 (0.0020) US |
51.934 — 51.950 (2.0447 — 2.0453) | |||||
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0.25 (0.0098) US |
51.734 — 51.750 (2.0368 — 2.0374) | |||||
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Crank journal outer diameter |
mm (in) |
Standard |
59.992 — 60.008 (2.3619 — 2.3625) | |||
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0.03 (0.0012) US |
59.962 — 59.978 (2.3607 — 2.3613) | |||||
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0.05 (0.0020) US |
59.942 — 59.958 (2.3599 — 2.3605) | |||||
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0.25 (0.0098) US |
59.742 — 59.758 (2.3520 — 2.3527) | |||||
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Bearing size (Thickness at center) |
mm (in) |
#1, #3 |
Standard |
1.998 — 2.011 (0.0787 — 0.0792) | ||
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0.03 (0.0012) US |
2.017 — 2.020 (0.0794 — 0.0795) | |||||
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0.05 (0.0020) US |
2.027 — 2.030 (0.0798 — 0.0799) | |||||
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0.25 (0.0098) US |
2.127 — 2.130 (0.0837 — 0.0839) | |||||
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#2, #4, #5 |
Standard |
2.000 — 2.013 (0.0787 — 0.0793) | ||||
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0.03 (0.0012) US |
2.019 — 2.022 (0.0795 — 0.0796) | |||||
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0.05 (0.0020) US |
2.029 — 2.032 (0.0799 — 0.0800) | |||||
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0.25 (0.0098) US |
2.129 — 2.132 (0.0838 — 0.0839) | |||||
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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) |
Standard |
0.010 — 0.030 (0.00039 — 0.0012) | |||