GENERAL SPECIFICATIONS
| Item | Specification |
|---|---|
| Displacement | 2.3L |
| No. of cylinders | 4 |
| Bore/stroke | 87.5/94.0 |
| Firing order | 1-3-4-2 |
| Oil pressure (hot @ 2,000 RPM) | 29-39 psi 200-268 kPa |
| Compression ratio | 12.3:1 |
| Engine weight (without accessory drive components) | 121.3 kg (267.5 lb) |
| Engine and transaxle weight (without accessory drive components) | 251.3 kg (554 lb) |
| Cylinder Block | |
| Cylinder bore diameter | 87.5-87.53 mm (3.444-3.446 in) |
| Cylinder bore maximum out-of-round | 0.008 mm (0.0003 in) |
| Main bearing bore diameter | 57.018-57.040 mm (2.244-2.245 in) |
| Head gasket surface flatness | 0.1 mm/general 0.05 mm/200 x 200 (0.003 in/general) (0.0019 in/7.87 x 7.87) |
| Piston | |
| Diameter (1) | 87.465-87.475 mm (3.443-3.444 in) |
| Diameter (2) | 87.4725-87.4875 mm (3.4438-3.4439 in) |
| Diameter (3) | 87.485-87.495 mm (3.4442-3.4447 in) |
| Piston-to-bore clearance | 0.025-0.045 mm (0.0009-0.0017 in) |
| Ring groove width - top | 1.203-1.205 mm (0.0473-0.0474 in) |
| Ring groove width - 2nd | 1.202-1.204 mm (0.0473-0.0474 in) |
| Ring groove width - oil | 2.501-2.503 mm (0.0984-0.0985 in) |
| Piston skirt coating thickness | 0.008-0.016 mm (0.0003-0.0006 in) |
| Piston Pin | |
| Diameter | 20.995-21.0 mm (0.8265-0.8267 in) |
| Length | 59.6-60.4 mm (2.346-2.377 in) |
| Piston-to-pin clearance | 0.008-0.016 mm (0.0003-0.0006 in) |
| Pin-to-rod clearance | Press fit |
| Cylinder Head | |
| Valve lift @ zero lash (exhaust) | 7.7 mm (0.30 in) |
| Valve lift @ zero lash (intake) | 8.8 mm (0.35 in) |
| Valve guide diameter | 5.509-5.539 mm (0.216-0.218 in) |
| Valve seat width - intake/exhaust | 0.99-1.84 mm (0.038-0.072 in) |
| Valve seat angle | 45 degrees |
| Valve seat runout | 0.075 mm (0.0029 in) |
| Valve lash adjuster bore diameter | 31.00-31.03 mm (1.220-1.221 in) |
| Cam bore diameter | 25.015-25.040 mm (0.984-0.985 in) |
| Valve | |
| Valve head diameter - intake | 34.85-35.15 mm (1.372-1.383 in) |
| Valve head diameter - exhaust | 29.85-30.15 mm (1.175-1.187 in) |
| Valve stem diameter - intake | 5.470-5.485 mm (0.2153-0.2159 in) |
| Valve stem diameter - exhaust | 5.465-5.480 mm (0.2151-0.2157 in) |
| Valve stem-to-guide clearance - intake | 0.0027 mm (0.00010 in) |
| Valve stem-to-guide clearance - exhaust | 0.0029 mm (0.00011 in) |
| Valve face runout | 0.05 mm (0.0019 in) |
| Valve face angle | 45 degrees |
| Valve Spring - Compression Pressure | |
| Intake and exhaust (installed) | 38.667 lb |
| Intake (valve open) 8.9 mm (0.35 in) of lift | 97.032 lb |
| Exhaust (valve open) 7.4 mm of lift | 93.338 lb |
| Free length | 44.92 mm (1.768 in) |
| Assembled height | 37.9 mm (1.492 in) |
| Crankshaft | |
| Main bearing journal diameter | 51.978-52.002 mm (2.046-2.047 in) |
| Production repair | 51.730-51.750 mm (2.036-2.037 in) |
| Main bearing clearance | 0.016-0.047 mm (0.0006-0.0015 in) |
| Connecting rod journal diameter | 46.978-47.002 mm (1.849-1.850 in) |
| Production repair | 49.730-49.750 mm (1.957-1.958 in) |
| End play | 0.220-0.450 mm (0.007-0.018 in) |
| Rings | |
| Width - top | 1.17-1.185 mm (0.0460-0.0466 in) |
| Width - 2nd | 1.197-1.199 mm (0.0471-0.0472 in) |
| Width - oil | 2.38-2.45 mm (0.093-0.096 in) |
| Ring gap (in bore) - top | 0.16-0.31 mm (0.006-0.012 in) |
| Ring gap (in bore) - 2nd | 0.33-0.48 mm (0.012-0.018 in) |
| Ring gap (in bore) - oil | 0.2-0.7 mm (0.007-0.027 in) |
| Valve Tappet | |
| Diameter | 30.97-30.98 mm (1.2192-1.2196 in) |
| Tappet-to-valve clearance - intake | 0.22- 0.28 mm (0.008-0.011 in) |
| Tappet-to-valve clearance - exhaust | 0.27-0.33 mm (0.010-0.013 in) |
| Tappet-to-bore clearance | 0.02-0.06 mm (0.0007-0.0023 in) |
| Camshaft | |
| Lobe lift - intake | |
| Lobe lift - exhaust | 7.80007 mm (0.307 in) |
| Runout (1) a | 0.03 mm (0.001 in) |
| Thrust clearance | 0.09-0.24 mm (0.003-0.009 in) |
| Journal diameter | 24.96-24.98 mm (0.982-0.983 in) |
| Journal-to-bore clearance | 0.035-0.080 mm (0.001-0.003 in) |
| Connecting Rod | |
| Bearing clearance | 0.027-0.052 (0.001-0.002 in) |
| Bearing thickness | 1.496-1.520 mm (0.058-0.059 in) |
| Crank bore diameter | 53.023-53.047 mm (2.087-2.088 in) |
| Pin bore diameter | 20.965-20.985 mm (0.825-0.826 in) |
| Length (center to center) | 154.8 mm (6.094 in) |
| Side clearance | 1.95-3.05 mm (0.076-0.120 in) |
| Axial clearance | 0.14-0.36 mm (0.005-0.014 in) |
| All dimensions are in mm unless noted. | |
GENERAL SPECIFICATIONS
a No. 3 Journal - Supported by No. 1 and No. 5 journals.
TORQUE SPECIFICATIONS
| Description | Nm |
|---|---|
| A/C compressor mounting bolts | 48 |
| A/C compressor mounting bolts | 25 |
| A/C manifold tube bolt | 20 |
| A/C tube bracket nut | 10 |
| Air cleaner outlet tube clamps | 3 |
| Belt tensioner bolt | 25 |
| Block-off plate bolts | 25 |
| Camshaft bearing caps a | |
| Camshaft position (CMP) sensor bolt | 7 |
| Camshaft sprocket bolt | 72 |
| Catalytic converter-to-cylinder head nuts | 47 |
| Coil-on-plug retaining stud bolts | 8 |
| Coolant outlet bolts | 10 |
| Coolant pump bolts | 10 |
| Coolant pump pulley bolts | 20 |
| Crankcase vent oil separator bolts | 10 |
| Crankshaft position (CKP) sensor | 7 |
| Crankshaft pulley bolt a | |
| Cylinder head bolts a | |
| Cylinder head temperature (CHT) sensor | 12 |
| EGR tube | 55 |
| EGR valve assembly bolts | 20 |
| Engine front cover bolts a | |
| Engine oil pressure (EOP) switch | 15 |
| Engine mount bolts | 48 |
| Engine mount bracket-to-engine nuts | 115 |
| Engine mount bracket-to-mount bolt | 115 |
| Engine roll-restrictor bolts (front) | 115 |
| Engine roll-restrictor bolts (rear) | 90 |
| Engine support crossmember bolts | 90 |
| Engine support crossmember nut | 175 |
| Engine timing plug bolt | 20 |
| Engine-to-transmission bolts | 48 |
| Exhaust manifold studs | 17 |
| Flywheel bolt a | |
| Fuel rail bolts | 23 |
| Intake manifold bolts | 18 |
| Knock sensor (KS) | 20 |
| Motor electronics coolant pump bolts | 20 |
| Lateral support crossmember bolts | 115 |
| Lower support insulator mount bolt (late build) | 80 |
| Lower support insulator nut (late build) | 80 |
| Lower support insulator stud (late build) | 12 |
| Lower support insulator through bolt (late build) | 115 |
| Oil drain plug | 28 |
| Oil filter adapter bolts | 25 |
| Oil filter cup | 33 |
| Oil level indicator bolt (lower) | 47 |
| Oil level indicator tube bolt (upper) | 10 |
| Oil pan bolts a | |
| Oil pan-to-bellhousing bolts | 48 |
| Oil pump drive chain tensioner shoulder bolts | 10 |
| Oil pump screen and cover assembly | 10 |
| Oil pump sprocket bolt | 25 |
| Oil pump-to-engine block bolts a | |
| Powertrain control module (PCM) wiring connector | 6 |
| Rear crankshaft oil seal retainer a | |
| Rear main seal mounting plate bolts | 10 |
| Roll restrictor bracket bolts | 115 |
| Spark plug | 12 |
| Splash shield bolts | 9 |
| Steering column coupling-to-steering gear pinch bolt | 40 |
| Subframe bolts | 175 |
| Subframe nuts | 150 |
| Thermostat housing bolts | 10 |
| Timing chain guide bolts | 10 |
| Timing chain tensioner bolts | 10 |
| Transaxle damper bolts | 29 |
| Transaxle mount bolts (early build) | 90 |
| Transaxle mount brace | 25 |
| Transaxle mount bracket nut (early build) | 90 |
| Transaxle mount bolt | 103 |
| Transaxle mount nuts | 90 |
| Transaxle-to-engine bolts | 48 |
| Valve cover bolts | 10 |
TORQUE SPECIFICATIONS
a See procedure for specification.
The 2.3L (140 CID) 4 cylinder engine has the following features
- Dual overhead camshaft
- Four valves per cylinder
- Sequential multiport fuel injection (SFI)
- Aluminum cylinder head
- Aluminum cylinder block
- Electronic ignition system with 4 coil-on-plug ignition coils
The 2.3L engine is a 4 valve-per-cylinder, dual overhead camshaft engine. The engine uses a coil-on-plug ignition system. The cylinder block is made of aluminum and the bearing caps are integrated into the ladder assembly. An aluminum oil pan bolts to the bottom of the lower cylinder block and to the transmission to provide greater strength. The camshafts are mounted in the cylinder heads and act against valve tappets to open and close the valves. The camshafts are driven off the front of the cylinder head by one timing chain. The chain is driven by a sprocket that is located on the crankshaft. The piston assembly is an aluminum piston with a cast iron connecting rod. The oil pump is driven by the crankshaft via a dedicated chain that is driven by the same sprocket that drives the timing chain.
See also:
• JACKING AND LIFTING