Engine Mechanical System (Except For STI): General Description: Specification
| Engine | Model | 2.0 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) | 86.0 x 86.0 (3.39 x 3.39) | |||
| Displacement | cm3 (cu in) | 1, 998 (122) | |||
| Compression ratio | 10.6 | ||||
| Compression pressure (at 200 - 300 r/min) | kPa (kg/cm2 , psi) | Standard | 1, 350 - 1, 750 (14 - 18, 196 - 254) | ||
| Number of piston rings | Compression ring: 2 Oil ring: 1 |
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| Intake valve timing | Open | Max. retard | ATDC 26° | ||
| Min. advance | BTDC 42° | ||||
| Close | Max. retard | ABDC 82° | |||
| Min. advance | ABDC 14° | ||||
| Exhaust valve timing | Open | Max. retard | BBDC 11° | ||
| Min. advance | BBDC 66° | ||||
| Close | Max. retard | ATDC 55° | |||
| Min. advance | ATDC 0° | ||||
| 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 speed (For CVT model, select lever in "P" or "N" range. For MT model, gear shift lever in neutral position.) | r/min | No load | Standard | 700±100 | |
| A/C ON | Standard | 700 - 865±50 | |||
| Ignition order | 1 → 3 → 2 → 4 | ||||
| Ignition timing | BTDC/{r/min} | Standard | CVT model: 8°±10°/700 | ||
| MT model: 6°±10°/700 | |||||
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 | 41.95 - 42.05 (1.6516 - 1.6555) | |||||
| Exhaust | Standard | 40.20 - 40.30 (1.5827 - 1.5866) | |||||
| 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) | To 98.4 (3.8740) | |||||
| Height | mm (in) | Standard | 98.5 (3.8779) | ||||
| Valve & valve guide | Valve overall length | mm (in) | Intake | 104.95 (4.1319) | |||
| Exhaust | 97.9 (3.8543) | ||||||
| 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 | CVT model: 41.68 (1.6409) | |||
| MT model: 41.06 (1.6165) | |||||||
| Tension/spring height | N (kgf, lb)/mm (in) | Set | Standard | 182 - 210 (18.56 - 21.41, 40.92 - 47.22)/33.0 (1.2992) | |||
| Lift | Standard | CVT model: 502 - 554 (51.19 - 56.49, 112.87 - 124.56)/22.0 (0.8661) | |||||
| MT model: 552 - 610 (56.29 - 62.20, 124.11 - 137.15)/22.0 (0.8661) | |||||||
| Squareness | Standard | 2.5°, 1.8 mm (0.0709 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) | To 204.9 (8.0669) | |||||
| Height of cylinder block | mm (in) | Standard | 205.0 (8.0709) | ||||
| Inner diameter of cylinder liner | mm (in) | Cylinder bore size mark A | Standard | 86.005 - 86.015 (3.3860 - 3.3864) | |||
| Cylinder bore size mark B | Standard | 85.995 - 86.005 (3.3856 - 3.3860) | |||||
| 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) | 40.0 (1.5748) | |||||
| Piston outer diameter | mm (in) | Standard Size | Grade A | Standard | 85.985 - 85.995 (3.3852 - 3.3856) | ||
| Grade B | Standard | 85.975 - 85.985 (3.3848 - 3.3852) | |||||
| 0.25 (0.0098) OS | Standard | 86.225 - 86.245 (3.3947 - 3.3955) | |||||
| 0.50 (0.0197) OS | Standard | 86.475 - 86.495 (3.4045 - 3.4053) | |||||
| Clearance between cylinder liner and piston | mm (in) | Standard | 0.010 - 0.030 (0.0004 - 0.0012) | ||||
| Inner diameter of cylinder liner boring limit (diameter) | mm (in) | To 86.505 (3.4057) | |||||
| 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 | 0.40 - 0.50 (0.0157 - 0.0197) | |||||
| 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 | 0.045 - 0.085 (0.0018 - 0.0033) | |||||
| 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) | 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 | 0.025 - 0.055 (0.0010 - 0.0022) | ||||
| 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 (dia.) | mm (in) | To 49.726 (1.9577) | |||||
| Crankshaft journal | Cylindricality | mm (in) | Limit | 0.006 (0.0002) | |||
| Out-of-roundness | mm (in) | Limit | 0.005 (0.0002) | ||||
| Grinding limit (dia.) | mm (in) | To 67.735 (2.6667) | |||||
| Crankshaft pin outer diameter | mm (in) | Standard size | Standard | 49.976 - 50.000 (1.9676 - 1.9685) | |||
| 0.03 (0.0012) US | Standard | 49.946 - 49.970 (1.9664 - 1.9673) | |||||
| 0.05 (0.0020) US | Standard | 49.926 - 49.950 (1.9656 - 1.9665) | |||||
| 0.25 (0.0098) US | Standard | 49.726 - 49.750 (1.9577 - 1.9587) | |||||
| 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, #2, #3, #4 | 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) | |||||
| #5 | Standard size | Standard | 2.496 - 2.511 (0.0983 - 0.0989) | ||||
| 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) | ||||