Engine Mechanical System: General Description: Specification
| Engine | Model | 2.5 L | ||
| Cylinder arrangement | Horizontally opposed, liquid cooled, 4-cylinder 4-stroke gasoline engine | |||
| Valve system mechanism | Chain driven, double overhead camshaft, 4-valve/cylinder | |||
| Bore x Stroke mm (in) | 94.0 x 90.0 (3.70 x 3.54) | |||
| Displacement cm3 (cu in) | 2, 498 (152) | |||
| Compression ratio | 12.0 | |||
| Compression pressure (at 200 - 300 r/min) kPa (kg/cm2 , psi) | Standard | 1, 050 - 1, 400 (11 - 14, 152 - 203) | ||
| Number of piston rings | Compression ring: 2 Oil ring: 1 | |||
| Intake valve timing | Open | Max. retard | ATDC 37° | |
| Min. advance | BTDC 41° | |||
| Close | Max. retard | ABDC 105° | ||
| Min. advance | ABDC 27° | |||
| Exhaust valve timing | Open | Max. retard | BBDC 10° | |
| Min. advance | BBDC 65° | |||
| Close | Max. retard | ATDC 46° | ||
| Min. advance | BTDC 9° | |||
| Cam clearance mm (in) | Intake | Standard | 0.13+0.02-0.03 (0.0051+0.0008-0.0012 ) |
|
| Exhaust | Standard | 0.22 ±0.02 (0.0087±0.0008) | ||
| Idle rpm (select lever in "P" or "N" range) r/min | No load | Standard | 675±100 | |
| A/C ON | Standard | 800 - 900±50 | ||
| Ignition order | 1 → 3 → 2 → 4 | |||
| Ignition timing BTDC/{r/min} | Standard | 8°±10°/675 | ||
NOTE:
OS: Oversize US: Undersize
| Camshaft | Bending mm (in) | Limit | 0.020 (0.0008) | ||
| Cam lobe height mm (in) | Intake | Valve drive section | Standard | 40.34 - 40.44 (1.5882 - 1.5921) | |
| Fuel pump drive section | Standard | 44.94 - 45.06 (1.7693 - 1.7740) | |||
| Exhaust | Standard | 39.66 - 39.76 (1.5614 - 1.5654) | |||
| Cam base circle diameter mm (in) | Standard | 34.0 (1.3386) | |||
| Journal outer diameter mm (in) | Standard | 25.946 - 25.963 (1.0215 - 1.0222) | |||
| Thrust clearance mm (in) | Standard | 0.068 - 0.116 (0.0027 - 0.0047) | |||
| Oil clearance mm (in) | Standard | 0.037 - 0.072 (0.0015 - 0.0028) | |||
| Cylinder head | Warpage (mating surface with cylinder block) mm (in) | Limit | 0.020 (0.0008) | ||
| Grinding limit mm (in) | 98.45 (3.8760) or less | ||||
| Height mm (in) | Standard | 98.5 (3.8779) | |||
| Valve & valve guide | Valve overall length mm (in) | Intake | 104.95 (4.1319) | ||
| Exhaust | 96.53 (3.8004) | ||||
| Valve head edge thickness mm (in) | Intake | Standard | 0.8 - 1.2 (0.0315 - 0.0472) | ||
| Exhaust | Standard | 1.0 - 1.4 (0.0394 - 0.0551) | |||
| Valve stem outer diameter mm (in) | Intake | Standard | 5.455 - 5.470 (0.2148 - 0.2154) | ||
| Exhaust | Standard | 5.445 - 5.460 (0.2144 - 0.2150) | |||
| Valve guide inner diameter mm (in) | Standard | 5.500 - 5.512 (0.2165 - 0.2170) | |||
| Clearance between valve and valve guide mm (in) | Intake | Standard | 0.030 - 0.057 (0.0012 - 0.0022) | ||
| Exhaust | Standard | 0.040 - 0.067 (0.0016 - 0.0026) | |||
| Valve guide protrusion amount mm (in) | Standard | 11.4 - 11.8 (0.4488 - 0.4646) | |||
| Valve & valve shim | Valve stem end outer diameter mm (in) | Intake | Standard | 5.455 - 5.470 (0.2148 - 0.2154) | |
| Exhaust | Standard | 5.445 - 5.460 (0.2144 - 0.2150) | |||
| Valve shim inner diameter mm (in) | Standard | 5.500 - 5.560 (0.2165 - 0.2189) | |||
| Clearance between valve and valve shim mm (in) | Intake | Standard | 0.030 - 0.105 (0.0012 - 0.0041) | ||
| Exhaust | Standard | 0.040 - 0.115 (0.0016 - 0.0045) | |||
| Valve seat | Seating width between valve and valve seat mm (in) | Intake | Standard | 0.8 - 1.6 (0.0315 - 0.0630) | |
| Exhaust | Standard | 1.1 - 1.7 (0.0433 - 0.0669) | |||
| Seating angle between valve and valve seat | 45° | ||||
| Seating position between valve and valve seat | Valve face center | ||||
| Valve spring | Free length (reference) mm (in) | Standard | 41.16 (1.6205) | ||
| Tension/spring height N (kgf, lbf)/mm (in) | Set | Standard | 182 - 210 (18.56 - 21.41, 40.92 - 47.22)/33.0 (1.2992) | ||
| Lift | Standard | 523 - 579 (53.33 - 59.04, 117.59 - 130.18)/22.0 (0.8661) | |||
| Squareness (at height of 30 mm (1.1811 in)) | Standard | 2.5°, 1.4 mm (0.0551 in) or less | |||
| Cylinder block & piston | Cylinder block warpage (Mating surface with cylinder head) mm (in) |
Limit | 0.025 (0.0010) | ||
| Grinding limit of cylinder block mm (in) | 204.95 (8.0689) or less | ||||
| Height of cylinder block mm (in) | Standard | 205.0 (8.0709) | |||
| Inner diameter of cylinder liner mm (in) | Cylinder bore size mark A | Standard | 94.005 - 94.015 (3.7010 - 3.7014) | ||
| Cylinder bore size mark B | Standard | 93.995 - 94.005 (3.7006 - 3.7010) | |||
| Cylindricality of cylinder liner mm (in) | Limit | 0.030 (0.0012) | |||
| Out-of-roundness of cylinder liner mm (in) | Limit | 0.030 (0.0012) | |||
| Piston grade point mm (in) | 13.3 (0.5236) | ||||
| Piston outer diameter mm (in) | Standard Size | Grade A | Standard | 93.980 - 93.990 (3.7000 - 3.7004) | |
| Grade B | Standard | 93.970 - 93.980 (3.6996 - 3.7000) | |||
| 0.25 (0.0098) OS | Standard | 94.220 - 94.240 (3.7094 - 3.7102) | |||
| 0.50 (0.0197) OS | Standard | 94.470 - 94.490 (3.7193 - 3.7201) | |||
| Clearance between cylinder liner and piston mm (in) | Standard | 0.015 - 0.035 (0.0006 - 0.0014) | |||
| Inner diameter of cylinder liner boring limit (diameter) mm (in) | 94.505 (3.7207) or less | ||||
| Piston and piston pin | Degree of fit | Piston pin must be fitted into position with thumb at 20°C (68°F). | |||
| Clearance between piston and piston pin mm (in) | Standard | 0.004 - 0.008 (0.0002 - 0.0003) | |||
| Piston ring | Closed gap mm (in) | Compression ring | Top ring | Standard | 0.20 - 0.25 (0.0079 - 0.0098) |
| Second ring | Standard | 0.25 - 0.35 (0.0098 - 0.0138) | |||
| Oil ring (upper rail and lower rail) | Standard | 0.10 - 0.35 (0.0039 - 0.0138) | |||
| Clearance between compression ring and piston 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 (3.9370 in) in length mm (in) | Limit | 0.10 (0.0039) | ||
| Thrust clearance mm (in) | Standard | 0.070 - 0.330 (0.0028 - 0.0130) | |||
| Connecting rod bearing thickness (at center) mm (in) | Connecting rod side | Standard size | Standard | 1.496 - 1.512 (0.0589 - 0.0595) | |
| 0.03 (0.0012) US | Standard | 1.515 - 1.519 (0.0596 - 0.0598) | |||
| 0.05 (0.0020) US | Standard | 1.525 - 1.529 (0.0600 - 0.0602) | |||
| 0.25 (0.0098) US | Standard | 1.625 - 1.629 (0.0640 - 0.0641) | |||
| Connecting rod cap side | Standard size | Standard | 1.492 - 1.508 (0.0587 - 0.0594) | ||
| 0.03 (0.0012) US | Standard | 1.511 - 1.515 (0.0595 - 0.0596) | |||
| 0.05 (0.0020) US | Standard | 1.521 - 1.525 (0.0599 - 0.0600) | |||
| 0.25 (0.0098) US | Standard | 1.621 - 1.625 (0.0638 - 0.0640) | |||
| Oil clearance mm (in) | Standard | 0.017 - 0.047 (0.0007 - 0.0019) | |||
| Piston pin & connecting rod bushing | Clearance between piston pin and connecting rod bushing mm (in) | Standard | 0.004 - 0.026 (0.0002 - 0.0010) | ||
| Crankshaft and crankshaft bearing | Bending mm (in) | Limit | 0.035 (0.0014) | ||
| Crankshaft pin | Cylindricality mm (in) | Limit | 0.006 (0.0002) | ||
| Out-of-roundness mm (in) | Limit | 0.005 (0.0002) | |||
| Grinding limit (diameter) mm (in) | 47.726 (1.8790) or less | ||||
| Crankshaft journal | Cylindricality mm (in) | Limit | 0.006 (0.0002) | ||
| Out-of-roundness mm (in) | Limit | 0.005 (0.0002) | |||
| Grinding limit (diameter) mm (in) | 67.735 (2.6667) or less | ||||
| Crankshaft pin outer diameter mm (in) | Standard size | Standard | 47.976 - 48.000 (1.8888 - 1.8898) | ||
| 0.03 (0.0012) US | Standard | 47.946 - 47.970 (1.8876 - 1.8886) | |||
| 0.05 (0.0020) US | Standard | 47.926 - 47.950 (1.8868 - 1.8878) | |||
| 0.25 (0.0098) US | Standard | 47.726 - 47.750 (1.8790 - 1.8799) | |||
| Crankshaft journal outer diameter mm (in) | Standard size | Standard | 67.985 - 68.003 (2.6766 - 2.6773) | ||
| 0.03 (0.0012) US | Standard | 67.955 - 67.979 (2.6754 - 2.6763) | |||
| 0.05 (0.0020) US | Standard | 67.935 - 67.959 (2.6746 - 2.6755) | |||
| 0.25 (0.0098) US | Standard | 67.735 - 67.759 (2.6667 - 2.6677) | |||
| Crankshaft bearing thickness (at center) mm (in) | #1, #3 | Standard size | Standard | 2.498 - 2.513 (0.0983 - 0.0989) | |
| 0.03 (0.0012) US | Standard | 2.519 - 2.522 (0.0992 - 0.0993) | |||
| 0.05 (0.0020) US | Standard | 2.529 - 2.532 (0.0996 - 0.0997) | |||
| 0.25 (0.0098) US | Standard | 2.629 - 2.632 (0.1035 - 0.1036) | |||
| #2, #4 | Standard size | Standard | 2.501 - 2.516 (0.0985 - 0.0991) | ||
| 0.03 (0.0012) US | Standard | 2.519 - 2.522 (0.0992 - 0.0993) | |||
| 0.05 (0.0020) US | Standard | 2.529 - 2.532 (0.0996 - 0.0997) | |||
| 0.25 (0.0098) US | Standard | 2.629 - 2.632 (0.1035 - 0.1036) | |||
| #5 | Standard size | Standard | 2.499 - 2.514 (0.0984 - 0.0990) | ||
| 0.03 (0.0012) US | Standard | 2.517 - 2.520 (0.0991 - 0.0992) | |||
| 0.05 (0.0020) US | Standard | 2.527 - 2.530 (0.0995 - 0.0996) | |||
| 0.25 (0.0098) US | Standard | 2.627 - 2.630 (0.1034 - 0.1035) | |||
| Thrust clearance mm (in) | Standard | 0.130 - 0.308 (0.0051 - 0.0121) | |||
| Oil clearance mm (in) | Standard | 0.013 - 0.031 (0.0005 - 0.0012) | |||