SPECIFICATION
| Engine | Model | 2.5 L | ||||
|---|---|---|---|---|---|---|
| Cylinder arrangement | Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine | |||||
| Valve system mechanism | Belt driven, double overhead camshaft, 4-valve/cylinder | |||||
| Bore x Stroke | Mm (in) | 99.5 x 79.0 (3.92 x 3.11) | ||||
| Displacement | Cm 3 (cu in) | 2,457 (149.94) | ||||
| Compression ratio | 8.2 | |||||
| Compression pressure (at 200 - 300 RPM) | KPa (Kg/cm 2 , psi) | 981 - 1,177 (10 - 12,142 - 171) | ||||
| Number of piston rings | Pressure ring: 2, Oil ring: 1 | |||||
| Intake valve timing | Open | Max. retard | ATDC 5° | |||
| Min. advance | BTDC 25° | |||||
| Close | Max. retard | ABDC 65° | ||||
| Min. advance | ABDC 35° | |||||
| Exhaust valve timing | Open | Max. retard | BBDC 32° | |||
| Min. advance | BBDC 72° | |||||
| Close | Max. retard | ATDC 28° | ||||
| Min. advance | BTDC 12° | |||||
| Valve clearance | Mm (in) | Inspection value | Intake | 0.20 +0.04 -0.06 (0.0079 +0.0016 -0.0024 | ||
| Exhaust | 0.35±0.05 (0.0138±0.0020) | |||||
| Adjustment value | Intake | 0.20 +0.01 -0.03 (0.0079 +0.0004 -0.0012 ) | ||||
| Exhaust | 0.35±0.02 (0.0138±0.0008) | |||||
| Idle speed (Gear shift lever in neutral position) | RPM | No load | 700±100 | |||
| A/C ON | 750±100 | |||||
| Ignition order | 1 --> 3 --> 2 --> 4 | |||||
| Ignition timing | BTDC/RPM | 15°±10°/700 | ||||
ENGINE SPECIFICATION
| Belt tension adjuster | Protrusion of adjuster rod | Mm (in) | 5.2 - 6.2 (0.205 - 0.244) | |||
|---|---|---|---|---|---|---|
| Camshaft | Bending limit | Mm (in) | 0.020 (0.00079) | |||
| Cam lobe height | Mm (in) | Intake | Standard | 46.55 - 46.65 (1.833 - 1.837) | ||
| Exhaust | Standard | 46.75 - 46.85 (1.841 - 1.844) | ||||
| Cam base circle diameter | Mm (in) | Standard | 37.0 (1.457) | |||
| Journal O.D. | Mm (in) | Front | Standard | 37.946 - 37.963 (1.4939 - 1.4946) | ||
| Center, rear | Standard | 29.946 - 29.963 (1.1790 - 1.1796) | ||||
| Oil clearance | Mm (in) | Standard | 0.037 - 0.072 (0.0015 - 0.0028) | |||
| Thrust clearance | Mm (in) | Standard | 0.068 - 0.116 (0.0027 - 0.0047) | |||
| Cylinder head | Warping limit (Mating surface with cylinder block) | Mm (in) | 0.035 (0.0014) | |||
| Grinding limit | Mm (in) | 0.3 (0.012) | ||||
| Standard height | Mm (in) | 127.5 (5.02) | ||||
| Valve seat | Seating angle between valve and valve seat | 90° | ||||
| Contacting width between valve and valve seat | Mm (in) | Intake | Standard | 0.6 - 1.4(0.024 - 0.055) | ||
| Exhaust | Standard | 1.2 - 1.8 (0.047 - 0.071) | ||||
| Valve guide | Clearance between the valve guide and valve stem | Mm (in) | Intake | Standard | 0.030 - 0.057 (0.0012 - 0.0022) | |
| Exhaust | Standard | 0.040 - 0.067 (0.0016 - 0.0026) | ||||
| Inside diameter | Mm (in) | 6.000 - 6.012 (0.2362 - 0.2367) | ||||
| Valve stem outer diameters | Mm (in) | Intake | 5.955 - 5.970 (0.2344 - 0.2350) | |||
| Exhaust | 5.945 - 5.960 (0.2341 - 0.2346) | |||||
| Valve guide protrusion | Mm (in) | 15.8 - 16.2 (0.622 - 0.638) | ||||
| Valve | Head edge thickness | Mm (in) | Intake | Standard | 1.0 - 1.4 (0.039 - 0.055) | |
| Exhaust | Standard | 1.3 - 1.7 (0.051 - 0.067) | ||||
| Overall length | Mm (in) | Intake | 104.4 (4.110) | |||
| Exhaust | 104.65 (4.1201) | |||||
| Valve spring | Free length | Mm (in) | 53.48 (2.106) | |||
| Tension/spring height | N (kgf, lb)/mm (in) | Set | 204.6 - 235.4 (20.86 - 24.00, 46.00 - 52.93)/36.0 (1.417) | |||
| Lift | 363.5 - 401.7 (37.07 - 40.96, 81.73 - 90.32)/26.7 (1.051) | |||||
| Squareness | 2.5°, 2.3 mm (0.091 in) or less | |||||
| Valve lifter | Outer diameter | Mm (in) | Standard | 34.959 - 34.975 (1.3763 - 1.3770) | ||
| Valve lifter mating surface inner diameter | Mm (in) | Standard | 34.994 - 35.016 (1.3777 - 1.3786) | |||
| Valve lifter and valve lifter mating surface clearance | Mm (in) | Standard | 0.019 - 0.057 (0.0007 - 0.0022) | |||
| Cylinder block | Warping limit (Mating surface with cylinder head) | Mm (in) | 0.025 (0.0098) | |||
| Grinding limit | Mm (in) | 0.1 (0.004) | ||||
| Standard height | Mm (in) | 201.0 (7.91) | ||||
| Taper | Mm (in) | Standard | 0.015 (0.0006) | |||
| Out-of-roundness | Mm (in) | Standard | 0.010 (0.0004) | |||
| Cylinder to piston clearance at 20°C (68°F) | Mm (in) | Standard | 0.010 - 0.010 (-0.00039 - 0.00039) | |||
| Cylinder inner diameter boring limit (diameter) | Mm (in) | To 100.005 (3.9372) | ||||
| Piston | Piston grade point | Mm (in) | 38.2 (1.50) | |||
| Outer diameter | Mm (in) | Standard | A | 99.505 - 99.515 (3.9175 - 3.9179) | ||
| B | 99.495 - 99.505 (3.9171 - 3.9175) | |||||
| 0.25 (0.0098) OS | 99.745 - 99.765 (3.9270 - 3.9278) | |||||
| 0.50 (0.0197) OS | 99.995 - 100.015 (3.9368 - 3.9376) | |||||
| Piston pin | Degree of fit | Piston pin must be fitted into position with thumb at 20°C(68°F). | ||||
| Clearance between piston pin hole and piston pin | Mm (in) | Standard | 0.004 - 0.008 (0.0002 - 0.0003) | |||
| Piston ring | Piston ring gap | Mm (in) | Top ring | Standard | 0.23 - 0.28 (0.0091 - 0.0110) | |
| Second ring | Standard | 0.37 - 0.52 (0.015 - 0.0203) | ||||
| Oil ring | Standard | 0.20 - 0.50 (0.0079 - 0.0197) | ||||
| Clearance between piston ring and piston ring groove | Mm (in) | Top ring | Standard | 0.040 - 0.080 (0.0016 - 0.0031) | ||
| Second ring | Standard | 0.030 - 0.070 (0.0012 - 0.0028) | ||||
| Connecting rod and connecting rod bearing | Bend or twist per 100 mm (3.94 in) in length | Mm (in) | Limit | 0.1 (0.0039) | ||
| Thrust clearance | Mm (in) | Standard | 0.070 - 0.330 (0.0028 - 0.0130) | |||
| Oil clearance | Mm (in) | Standard | 0.017 - 0.045 (0.0007 - 0.0018) | |||
| Bearing size (Thickness at center) | Mm (in) | Standard | 1.490 - 1.502 (0.0587 - 0.0591) | |||
| 0.03 (0.0012) US | 1.504 - 1.512 (0.0592 - 0.0595) | |||||
| 0.05 (0.0020) US | 1.514 - 1.522 (0.0596 - 0.0599) | |||||
| 0.25 (0.0098) US | 1.614 - 1.622 (0.0635 - 0.0639) | |||||
| Bushing of small end | Clearance between piston pin and bushing | Mm (in) | Standard | 0 - 0.022 (0 - 0.0009) | ||
| Crankshaft and crankshaft bearing | Bending limit | Mm (in) | 0.035 (0.0014) | |||
| Crank pin | Out-of-roundness | Mm (in) | 0.003 (0.0001) | |||
| Cylindrically | Mm (in) | 0.004 (0.0002) | ||||
| Grinding limit (dia.) | Mm (in) | To 51.750 (2.0374) | ||||
| Crank journal | Out-of-roundness | Mm (in) | 0.005 (0.0002) | |||
| Cylindrically | Mm (in) | 0.006 (0.0002) | ||||
| Grinding limit (dia.) | Mm (in) | To 59.758 (2.3527) | ||||
| Crank pin outer diameter | Mm (in) | Standard | 51.984 - 52.000 (2.0466 - 2.0472) | |||
| 0.03 (0.0012) US | 51.954 - 51.970 (2.0454 - 2.0461) | |||||
| 0.05 (0.0020) US | 51.934 - 51.950 (2.0447 - 2.0453) | |||||
| 0.25 (0.0098) US | 51.734 - 51.750 (2.0368 - 2.0374) | |||||
| Crank journal outer diameter | Mm (in) | Standard | 59.992 - 60.008 (2.3619 - 2.3625) | |||
| 0.03 (0.0012) US | 59.962 - 59.978 (2.3607 - 2.3613) | |||||
| 0.05 (0.0020) US | 59.942 - 59.958 (2.3599 - 2.3605) | |||||
| 0.25 (0.0098) US | 59.742 - 59.758 (2.3520 - 2.3527) | |||||
| Bearing size (Thickness at center) | Mm (in) | #1, #3 | Standard | 1.998 - 2.011 (0.0787 - 0.0792) | ||
| 0.03 (0.0012) US | 2.017 - 2.020 (0.0794 - 0.0795) | |||||
| 0.05 (0.0020) US | 2.027 - 2.030 (0.0798 - 0.0799) | |||||
| 0.25 (0.0098) US | 2.127 - 2.130 (0.0837 - 0.0839) | |||||
| #2, #4, #5 | Standard | 2.000 - 2.013 (0.0787 - 0.0793) | ||||
| 0.03 (0.0012) US | 2.019 - 2.022 (0.0795 - 0.0796) | |||||
| 0.05 (0.0020) US | 2.029 - 2.032 (0.0799 - 0.0800) | |||||
| 0.25 (0.0098) US | 2.129 - 2.132 (0.0838 - 0.0839) | |||||
| Thrust clearance | Mm (in) | Standard | 0.030 - 0.115 (0.0012 - 0.0045) | |||
| Oil clearance | Mm (in) | Standard | 0.010 - 0.030 (0.00039 - 0.0012) | |||
| NOTE: OS: Oversize US: Undersize | ||||||
| NOTE |
|---|
| OS: Oversize US: Undersize |
UNDERSIZE AND OVERSIZE SPECIFICATIONS
Scheme 73
Tightening torque: N.m (kgf-m, ft-lb)
T1: 3.4 (0.3, 2.5)
T2: 5 (0.5, 3.7)
T3: 6.4 (0.7, 4.7)
T4: 9.75 (1.0, 7.2)
T5: 24.5 (2.5, 18.1)
T6: 25 (2.5, 18.4)
T7: 39 (4.0, 28.8)
T8: Refer to INSTALLATION, Cam Sprocket.
T9: Refer to INSTALLATION, Crank Pulley.
Scheme 74
Tightening torque: N.m (kgf-m, ft-lb)
T1: 6.4 (0.7, 4.7)
T2: 8 (0.8, 5.9)
T3: 10 (1.0, 7.4)
T4: 29 (3.0, 21.4)
T5: Refer to INSTALLATION, Cylinder Head.
T6: Refer to INSTALLATION, Camshaft.
Scheme 75
Scheme 76
Tightening torque: N.m (kgf-m, ft-lb)
T1: 5 (0.5, 3.7)
T2: 6.4 (0.7, 4.7)
T3: 10 (1.0, 7.4)
T4: First 12 (1.2, 8.9)
Second 12 (1.2, 8.9)
T5: 16 (1.6, 11.8)
T6: 25 (2.5, 18.4)
T7: 44 (4.5, 32.5)
T8: 54 (5.5, 39.8)
T9: 69 (7.0, 50.9)
T10: 70 (7.1, 51.6)
T11: Refer to INSTALLATION, Cylinder Block.
Scheme 77
Tightening torque: N.m (kgf-m, ft-lb)
T1: 52 (5.3, 38.4)
T2: 72 (7.3, 53.1)
Scheme 78
Tightening torque: N.m (kgf-m, ft-lb)
T1: 35 (3.6, 25.8)
T2: 42 (4.3, 31.0)
T3: 85 (8.7, 62.7)
Refer to REMOVAL or INSTALLATION for removal and installation procedures of the intake and exhaust valves.
Refer to REMOVAL or INSTALLATION for removal and installation procedures of pistons.
Refer to REMOVAL or INSTALLATION for removal and installation procedures of connecting rod.
Refer to REMOVAL or INSTALLATION for removal and installation procedures of the crankshaft.
See also:
• READ CURRENT DATA FOR ENGINE (NORMAL MODE)