GENERAL SPECIFICATIONS
| Item | Specification |
|---|---|
| Lubricants and Sealants | |
| SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP or equivalent | WSS-M2C153-H |
| Motorcraft Premium Engine Coolant VC-4-A (in Oregon VC-5, in Canada CXC-10) or equivalent a | ESE-M97B44-A (green color) |
| Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) or equivalent ab | WSS-M97B51-A1 (yellow color) |
| Metal Surface Cleaner F4AZ-19A536-RA or equivalent | WSE-M5B392-A |
| Silicone Gasket and Sealant F7AZ-19554-EA or equivalent | WSE-M4G323-A6 |
| Petroleum Jelly | WSD-M1C226-A |
| Engine | |
| Displacement | 4.6L (281 CID) |
| Number of cylinders | 8 |
| Bore | 90.2 mm |
| Stroke | 90.0 mm |
| Firing order | 1-3-7-2-6-5-4-8 |
| Oil pressure (hot @ 1,500 psi) | 138-310 kPa (20-45 psi) |
| Oil capacity | 5.68 L (6.0 qts) |
| Compression ratio | 9.3:1 |
| Cylinder Head and Valve Train | |
| Cylinder head gasket surface flatness | 0.05 mm (0.002 in) in any 150 mm x 150 mm (6.0 in x 6.0 in) area |
| Combustion chamber volume | 52 ± 0.5 cc |
| Valve arrangement (front to rear) - LH | E-I-E-I-E-I-E-I |
| Valve arrangement (front to rear) - RH | I-E-I-E-I-E-I-E |
| Valve guide bore diameter | 7.044-7.015 mm (0.2773-0.2761 in) |
| Valve stem diameter - intake | 6.995-6.965 mm (0.275-0.2742 in) |
| Valve stem diameter - exhaust | 6.970-6.940 mm (0.274-0.2732 in) |
| Valve stem-to-guide clearance | 0.020-0.079 mm (0.0008-0.0031 in) |
| Valve head diameter - intake | 44.5 mm (1.75 in) |
| Valve head diameter - exhaust | 36.0 mm (1.41 in) |
| Valve face runout | 0.05 mm (0.002 in) |
| Valve face angle | 45.25-45.75 degrees |
| Valve seat width | 1.9-2.1 mm (0.0748-0.0827 in) |
| Valve seat runout (T.I.R.) max. | 0.025 mm (0.001 in) |
| Valve seat angle | 44.51-45.01 degrees |
| Valve spring free length | 53.37 mm (2.10 in) ± 1.0 mm (0.039 in) |
| Valve spring squareness | 2 degrees |
| Valve spring compression pressure | 720.0-800.0 N @ 28.80 mm |
| Valve spring installed height | 39.7-40.3 mm (1.5630-1.5866 in) |
| Valve spring installed pressure | 283.0-321.0 N @ 42.56 mm |
| Rocker arm ratio | 1.80:1 |
| Hydraulic Lash Adjuster | |
| Diameter | 16.000-15.988 mm (0.66-0.629 in) |
| Clearance-to-bore | 0.018-0.069 mm (0.0007-0.0027 in) |
| Service limit | 0.016 mm (0.0006 in) |
| Hydraulic leakdown rate | 5-25 seconds |
| Collapsed lash adjuster gap | 0.085-0.45 mm (0.0335-0.0177 in) |
| Camshaft | |
| Theoretical valve lift @ 0 lash - intake | 13.006 mm (0.512 in) |
| Theoretical valve lift @ 0 lash - exhaust | 13.753 mm (0.541 in) |
| Lobe lift - intake | 7.11038 mm (0.2799 in) |
| Lobe lift - exhaust | 7.49744 mm (0.2951 in) |
| Allowable lobe lift loss | 0.0 mm (0.000 in) |
| Journal diameter | 26.962-26.936 mm (1.061-1.060 in) |
| Camshaft journal bore inside diameter | 27.012-26.987 mm (1.063-1.0625 in) |
| Camshaft journal-to-bearing clearance | 0.025-0.076 mm (0.00098-0.003 in) |
| Runout | 0.05 mm (0.002 in) |
| End play | 0.09-0.19 mm (0.0035-0.0075 in) |
| Cylinder Block | |
| Cylinder bore diameter - grade 1 | 90.200-90.213 mm (3.5512-3.5517 in) |
| Cylinder bore diameter - grade 2 | 90.213-90.226 mm (3.5517-3.5522 in) |
| Cylinder bore diameter - grade 3 | 90.226-90.239 mm (3.5522-3.5527 in) |
| Cylinder bore maximum taper | 0.006 mm (0.0002 in) |
| Cylinder bore maximum out-of-round | 0.020 mm (0.0008 in) |
| Main bearing bore inside diameter | 72.401-72.422 mm (2.85-2.851 in) |
| Head gasket surface flatness | 0.05 mm (0.0020 in) in any 150 mm x 150 mm (6.0 in x 6.0 in) area |
| Crankshaft | |
| Main bearing journal diameter | 67.483-67.503 mm (2.65-2.657 in) |
| Main bearing journal maximum taper | 0.020 mm (0.0007 in) |
| Main bearing journal maximum out-of-round | 0.05 mm (0.002 in) |
| Main bearing journal-to-cylinder block clearance | 0.025-0.045 mm (0.0009-0.0018 in) |
| Connecting rod journal diameter | 52.983-53.003 mm (2.0819-2.0867 in) |
| Connecting rod journal maximum taper | 0.015 mm (0.0005 in) |
| Connecting rod journal maximum out-of-round | 0.05 mm (0.0020 in) |
| Crankshaft maximum end play | 0.130-0.301 mm (0.0051-0.0118 in) |
| Piston and Connecting Rod | |
| Piston diameter - coded red 1 | 90.177-90.197 mm (3.550-3.551 in) |
| Piston diameter - coded blue 2 | 90.190-90.210 mm (3.5507-3.5515 in) |
| Piston diameter - coded yellow 3 | 90.203-90.223 mm (3.513-3.5521 in) |
| Piston-to-cylinder bore clearance | 0.012-0.0026 mm (0.0005-0.001 in) |
| Piston ring end gap - lop and bottom | 0.23-0.49 mm (0.01-0.02 in) |
| Piston ring end gap - oil ring (steel rail) | 0.05-0.66 mm (0.006-0.026 in) |
| Piston ring groove width - compression (top) | ].520-1.550 (0.06-0.610 in) |
| Piston ring groove width - compression (bottom) | 1.520-1.530 mm (0.060-0.0602 in) |
| Piston ring groove width - oil ring | 6.996-7.224 mm (0.275-0.2844 in) |
| Piston ring width - compression | 1.49-1.47 mm (0.0587-0.0579 in) |
| Piston ring width - oil ring rail (2) | 0.473-0.447 mm (0.0186-0.0176 in), 0.483 mm (0.0190 in) max. at ID |
| Piston ring width - oil ring expander | 2.038-1.960 mm (0.080-0.077 in) |
| Piston ring-to-groove clearance - compression | 0.030-0.070 mm (0.0012-0.0028 in) |
| Piston ring-to-groove clearance - oil ring assembly | 0.046-0.196 mm (0.0018-0.0077 in) |
| Piston pin bore diameter | 22.0015-22.004 mm (0.866-0.8663 in) |
| Piston pin diameter | 21.994-21.999 mm (0.866-0.8661 in) |
| Piston pin length | 61.93-62.05 mm (2.44-2.443 in) |
| Piston pin-to-piston fit | 0.005-0.010 mm (0.0002-0.0004 in) |
| Connecting rod-to-pin clearance | 0.015-0.040 mm (0.0006-0.00157 in) |
| Connecting rod pin bore diameter | 22.012-22.024 mm (0.866-0.867 in) |
| Connecting rod length (center-to-center) | 150.7 mm (5.93 in) |
| Connecting rod maximum allowed bend | 0.038 mm per 25 mm (0.0015-0.984 in) |
| Connecting rod maximum allowed twist | 0.050 mm per 25 mm (0.00197 per 0.9843 in) |
| Connecting rod bearing bore diameter | 56.866-56.886 mm (2.238-2.239 in) |
| Connecting rod bearing-to-crankshaft clearance | 0.027-0.069 mm (0.001-0.0027 in) |
| Connecting rod side clearance - assembled to crank (standard) | 0.15-0.45 mm (0.0059-0.0177 in) |
| Accessory Drive Belt | |
| Drive belt | 6 ribs |
ENGINE (4.6L 2V) GENERAL SPECIFICATIONS
TORQUE SPECIFICATIONS
| Description | Nm |
|---|---|
| Valve cover bolts | 10 |
| Camshaft bearing cap bolts | 10 |
| Camshaft sprocket bolts a | |
| Cylinder head temperature (CHT) sensor | 26 |
| Camshaft position sensor bolt | 10 |
| Crankshaft position sensor bolt | 10 |
| Connecting rod bolts a | |
| Crankshaft damper pulley bolt a | |
| Crankshaft main bearing bolts (cross-mounted) a | |
| Cylinder main bearing bolts (vertical) a | |
| Cylinder heads bolts a | |
| EGR valve to intake manifold bolts a | |
| Exhaust manifold nuts a | 20 |
| Drive belt idler pulley bolt | 25 |
ENGINE (4.6L 2V) TORQUE SPECIFICATIONS (1 OF 4)
| Description | Nm |
|---|---|
| Drive belt tensioner pulley bolt | 25 |
| Flexplate bolts | 80 |
| Engine front cover bolts a | 25 |
| Fuel injection supply manifold bracket bolts | 10 |
| Heater return tube studs | 40 |
| Ignition coil | 6 |
| Intake manifold bolts a | 25 |
| Knock sensor | 20 |
| Oil filter | 15 |
| Oil filter adapter bolt | 25 |
| Oil level indicator tube bolt | 10 |
| Oil line connector adapter assembly bolt | 25 |
| Oil pan bolts a | |
| Oil pan drain plug | 14 |
| Oil pressure switch | 10 |
| Oil pump bolts | 10 |
| Oil pump screen cover and tube bolts a | |
| Oil pump screen cover and tube spacer | 25 |
| Oil pump screen cover and tube spacer bolt | 25 |
| Power steering pump bolts a | 25 |
| Rear main oil seal retainer bolts | 10 |
| Spark plugs | 15 |
| Thermostat housing bolts | 25 |
| Idle air control valve screws a | |
| Throttle body adapter to intake manifold bolts | 10 |
| Throttle body to throttle body adapter bolts a | |
| Timing chain guide bolts | 10 |
ENGINE (4.6L 2V) TORQUE SPECIFICATIONS (2 OF 4)
| Description | Nm |
|---|---|
| Timing chain hydraulic tensioner bolts | 25 |
| Water pump bolts | 25 |
| Water pump pulley bolts | 25 |
| Heater water inlet tube | 15 |
| EGR valve to exhaust manifold tube fittings a | |
| Brake booster vacuum hose bracket nut | 10 |
| Power steering bracket upper bolts | 10 |
ENGINE (4.6L 2V) TORQUE SPECIFICATIONS (3 OF 4)
| Description | Nm |
|---|---|
| Power steering bracket lower bolts | 40 |
| Accelerator control splash shield bolts | 10 |
| Motor mount nuts | 70 |
| Motor mount through bolts | 103 |
| Oil pressure switch | 15 |
| Fan shroud bolts | 7 |
ENGINE (4.6L 2V) TORQUE SPECIFICATIONS (4 OF 4)
a Refer to the procedure in this article.
| WARNING | Do not operate the engine with the hood open until the fan blade has been first examined for possible cracks and separation. |
The 4.6L (281 CID) is a V-8 engine with the following features
- Single overhead camshaft
- Two valves per cylinder
- Sequential multiport fuel injection (SFI)
- Aluminum cylinder heads
- Cast aluminum, 90-degree V-cylinder block
- Individually chain-driven camshafts with a hydraulic timing chain tensioner on each timing chain
- Electronic ignition system with eight ignition coils