SPECIFICATIONS
SECTION 303-
01B: Engine — 4.6L (2V) 2003 Mustang Workshop Manual General Specifications
Item Specification
Lubricants and Sealants
Silicone Gasket and Sealant F7AZ-19554-
EA WSE-
M4G323- A4 Premium Engine Coolant VC-
4A,
VC- 5 in Oregon, CXC- 10 in Canada ESE-
M97B44- A Super Premium 5W-
20 Motor Oil XO-5W20-QSP WSS-
M2C153- H Threadlock 262 E2FZ-19554-
B WSK-
M2G351- A6 Metal Surface Cleaner F4AZ-19A536-
RA or
equivalent WSE-
M5B392- A Engine
Displacement 4.6L (2V) (281 CID)
Number of cylinders 8
Bore 90.2 mm (3.55 in)
Stroke 90.0 mm (3.54 in)
Firing order 1-3-7-2-6-5-4-
8 Oil pressure (hot 1,500 rpm) 138-
310 kPa (20- 45 psi) Oil capacity
6.25 ±
0.25 quarts a Compression ratio 9.37:1 (+0.61/-
0.46) Cylinder Head and Valve Train
Combustion chamber volume
43.9 ±
1.5 cm 3 Valve arrangement (front to rear) —
LH b E-I-E-I-E-I-E-I
Valve arrangement (front to rear) —
RH b I-E-I-E-I-E-I-E
Valve guide bore diameter 7.015-
7.044 mm (0.2762- 0.2773 in) Valve stem diameter 6.975-
6.995 mm (0.2754- 0.2746 in) Valve stem-
to-guide clearance — intake 0.020-
0.069 mm (0.00078- 0.00272 in) Valve stem-
to-guide clearance — exhaust 0.046-
0.095 mm (0.0018- 0.0037 in) Valve head diameter —
intake 44.37-
44.63 mm (1.75- 1.76 in) Valve head diameter —
exhaust 35.88-
36.14 mm (1.41- 1.43 in) Valve face runout 0.05 mm (0.002 in)
Valve face angle 45.5 degrees
Valve seat width 1.3-
1.5 mm (0.051- 0.060 in) Valve seat runout (T.I.R.) Recommended 0.025 mm (0.001 in) max. 0.050
mm (0.002 in) Valve seat angle 45 degrees
Valve spring free length (approx.) 51.77-
54.97 mm (2.04- 2.16 in) Valve spring squareness 2 degrees
Valve spring compression pressure 720.0-
800.0 N @ 28.80 mm (161.9 lb @ 1.13 in) Klj . 1 ba
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a
With installation of a new filter.
b Distance front edge of bearing is installed below front face of cylinder block.
c Time necessary for plunger to leak down 1.6 mm of travel with 222 N force and leak down fluid in
tappet.
d Measured at 31.5 mm from top of block. Measured at 43 mm from top of piston, at 90 degrees to the
piston pin. Connecting rod journal maximum taper 0.004 mm (0.0002 in)
Connecting rod journal maximum out-of-
round 0.05 mm (0.002 in)
Crankshaft maximum end play 0.075-
0.377 mm (0.003- 0.015 in) Piston and Connecting Rod
Piston diameter —
code red 1 d 90.185-
90.205 mm (3.55- 3.551 in) Piston diameter —
code blue 2 d 90.195-
90.215 mm (3.55- 3.551 in) Piston diameter —
code yellow 3 d 90.205-
90.225 mm (3.551- 3.552 in) Piston-
to-cylinder bore clearance -0.005-
0.025 mm (- 0.002/+0.001 in) Piston ring end gap —
compression (top) e 0.130-
0.280 mm (0.005- 0.011 in) Piston ring end gap —
compression (bottom) e 0.300-
0.550 mm (0.0018- 0.0022 in) Piston ring end gap —
oil ring (steel rail) e 0.150-
0.650 mm (0.006- 0.0256 in) Piston ring groove width —
compression (top) 1.530-
1.550 mm (0.06- 0.061 in) Piston ring groove width —
compression
(bottom) 1.520-
1.540 mm (0.06- 0.061 in) Piston ring groove width —
oil ring 3.030-
3.050 mm (0.12- 0.12 in) Piston ring width —
compression (top) 1.480-
1.500 mm (0.058- 0.059 in) Piston ring width —
compression (bottom) 1.470-
1.490 mm (0.0587- 0.0586 in) Piston ring-
to-groove clearance — compression
(top) 0.050-
0.090 mm (0.002- 0.004 in) Piston ring-
to-groove clearance — compression
(bottom) 0.030-
0.080 mm (0.00118- 0.00315 in) Piston ring-
to-groove clearance — oil ring Snug fit
Piston pin bore diameter
f 21.008-
22.014 mm (0.866- 0.867 in) Piston pin diameter 22.0010-
22.0030 mm (0.87- 0.871 in) Piston pin length 61.601-
62.030 mm (2.42523- 2.44212 in) Piston pin-
to-piston fit -
0.005/+0.0135 mm (- 0.0002/+0.0005 in) Piston-
to-connecting rod clearance — standard 0.009-
0.0235 mm (0.0004- 0.00092 in) Piston-
to-connecting rod clearance — service
limit 0.035 mm (0.001378 in)
Connecting rod-
to-pin clearance 0.009-
0.023 mm (0.0004- 0.0009 in) Connecting rod pin bore diameter 22.012-
22.024 mm (0.86661- 0.86708 in) Connecting rod length (center-
to-center) 150.7 mm (5.933 in)
Connecting rod maximum allowed bend
g 0.038 per 25 mm (0.00150 per 0.9843 in)
Connecting rod maximum allowed twist
c 0.050 per 25 mm (0.00197 per 0.9843 in)
Connecting rod bearing bore diameter 56.866-
56.886 mm (2.23881- 2.23960 in) Connecting rod bearing-
to-crankshaft clearance 0.027-
0.069 mm (0.0010629- 0.0027165 in) Connecting rod side clearance —
standard 0.125-
0.475 mm (0.005- 0.019 in) Connecting rod side clearance —
service limit 0.50 mm (0.01969 in) max. Klj . 3 ba
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Both cylinder heads
58. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other
abrasive means to clean the sealing surfaces. These tools cause scratches and gouges
that make leak paths. Use a plastic scraping tool to remove all traces of the head gasket.
CAUTION: Observe all warnings or cautions and follow all application directions
contained on the packaging of the silicone gasket remover and the metal surface prep.
NOTE: If there is no residual gasket material present, metal surface prep can be used to clean
and prepare the surfaces.
Clean the cylinder head- to-cylinder block mating surfaces of both the cylinder head and the
cylinder block. 1. Remove any large deposits of silicone or gasket material with a plastic scraper.
2. Apply silicone gasket remover, following package directions, and allow to set for several minutes.
3. Remove the silicone gasket remover with a plastic scraper. A second application of silicone gasket remover may be required if residual traces of silicone or gasket material
remain.
4. Apply metal surface prep, following package directions, to remove any remaining traces of oil or coolant, and to prepare the surfaces to bond with the new gasket. Do not attempt
to make the metal shiny. Some staining of the metal surfaces is normal.
59. NOTE: The straightedge used must be flat within 0.0051 mm (0.0002 in) per foot of tool length.
Support the cylinder head on a bench with the head gasket side up. Inspect all areas of the
deck face with a straightedge, paying particular attention to the oil pressure feed area. The
cylinder head must not have depressions deeper than 0.0254 mm (0.001 in) across a 38.1 mm
(1.5 in) square area, or scratches more than 0.0254 mm (0.001 in) . Klj . 20 ba
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Valve head diameter—
exhaust 30 mm (1.18 inch)
Valve face runout 0.05 mm (0.002 in)
Valve face angle 45.5 degrees
Valve seat width—
intake 1.8-
2.2 mm (0.071- 0.086 inch) Valve seat width—
exhaust 1.8-
2.2 mm (0.071- 0.086 inch) Valve seat runout 0.05 mm (0.002 inch)
Valve seat angle 45 degrees
Valve spring free length—
intake 42.16 mm (1.6598 inch)
Valve spring free length—
exhaust 42.16 mm (1.6598 inch)
Valve spring squareness 2 degrees
Valve spring compression pressure—
intake 711.47 N @ 26.19 mm (159.9 lb-
ft @
1.031 inch) Valve spring compression pressure—
exhaust 711.47 N @ 26.19 mm (159.9 lb-
ft @
1.031 inch) Valve spring installed height 36.14 mm (1.4228 in)
Valve spring installed pressure—
intake 289.1 N @ 36.14 mm (64.99 lb-
ft @
1.4228 inch) Valve spring installed pressure—
exhaust 289.1 N @ 36.14 mm (64.99 lb-
ft @
1.4228 inch) Roller follower ratio 1.8:1
Hydraulic Lash Adjuster
Diameter 16.000-
15.988 mm (0.6299- 0.6294 inch) Clearance-
to-bore 0.018-
0.069 mm (0.000709- 0.002717
inch) Service limit 0.016 mm (1.0006299 inch)
Hydraulic leakdown rate
c 5-
25 seconds Collapsed lash adjuster gap 0.80-
1.20 mm (0.0315- 0.0472 inch) Camshaft
Theoretical valve lift @ 0 lash—
intake (primary and
secondary) 10.0 mm (0.3937 inch)
Theoretical valve lift @ 0 lash—
exhaust 10.0 mm (0.3937 inch)
Lobe lift 5.54 mm (0.218 in)
Allowable lobe lift loss 0.130 mm (0.0051 in)
Journal diameter 26.962-
26.936 mm (1.0615- 1.0605 inch) Camshaft journal bore inside diameter 27.012-
26.987 mm (1.0635- 1.0625 in) Camshaft journal-
to bearing clearance 0.025-
0.076 mm (0.00098- 0.002992
inch) Runout 0.025 mm (0.0010 in)
End play 0.025-
0.165 mm (0.00098- 0.00649 inch) Cylinder Block
Cylinder bore diameter 90.2-
90.239 mm Cylinder bore maximum taper 0.016 mm
Cylinder bore maximum out-of-
round 0.016 mm
Main bearing bore diameter 72.402-
72.422 mm Klj . 2 ba
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a
With installation of a new filter. Head gasket surface flatness 0.15 mm (0.006 in) max. overall
Crankshaft
Main bearing journal diameter 67.493 mm
Main bearing journal maximum taper 0.05 mm
Main bearing journal maximum out-
of round 0.05 mm
Main bearing journal-
to-cylinder block clearance 0.023-
0.055 mm Connecting rod journal diameter 56.866-
56.886 mm Connecting rod journal maximum taper 0.004 mm (0.0002 in)
Connecting rod journal maximum out-of-
round 0.004 mm (0.0002 in)
Crankshaft maximum end play 0.130-
0.301 mm Thrust bearing journal diameter 67.493 mm
Thrust bearing journal maximum out-
of round 0.05 mm
Thrust bearing journal maximum taper 0.05 mm
Thrust bearing journal length 17.725-
17.775 mm Piston and Connecting Rod
Piston diameter 90.180-
90.191 mm Piston-
to-cylinder bore clearance -
0.010/+0.026 mm Piston ring end gap —
compression (top) 0.30 mm
Piston ring end gap —
compression (bottom) 0.50 mm
Piston ring end gap —
compression (oil ring) 0.65 mm
Piston ring groove width —
compression (top) 1.53-1.549 mm
Piston ring groove width —
compression (bottom) 1.519-
1.539 mm Piston ring groove width —
oil ring 3.031-
3.055 mm Piston ring width —
compression (top) 1.47-
1.49 mm Piston ring width —
compression (bottom) 1.47-
1.49 mm Piston ring width —
oil ring 2.854-
2.984 mm Piston ring-
to groove clearance — compression (top) 0.04-0.079 mm
Piston ring-
to groove clearance — compression (bottom) 0.029-
0.069 mm Piston ring-
to groove clearance — oil ring 0.047-
0.201 mm Piston pin bore diameter 22.0042-
21.998 mm Piston pin diameter 21.991-
29.994 mm Piston pin length 61.60-
62.03 mm Piston pin-
to-piston fit 0.0058-
0.0132 mm Connecting rod-
to-pin clearance 0.018-
0.033 mm Connecting rod pin bore diameter 22.012-
22.024 mm Connecting rod length 150.7 mm
Connecting rod maximum allowed bend 0.038 mm per 25 mm
Connecting rod maximum allowed twist 0.050 mm per 25 mm
Connecting rod bearing bore diameter 56.866-
56.886 mm Connecting rod bearing-
to-crankshaft clearance 0.027-
0.069 mm Connecting rod side clearance 0.15-
0.45 mm Klj . 3 ba
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7.
CAUTION: The bolts are different lengths and must be returned to their original
location.
NOTE: RH shown; LH similar.
Remove the bolts and the timing chain guides (6K297).
Installation 1. CAUTION: Timing chain procedures must be followed exactly or damage to the
pistons or valves will result.
Compress the tensioner plunger, using a soft- jawed vise.
2. Install a retaining clip on the tensioner to hold the plunger in during installation. zRemove the tensioner from the vise. Klj . 3 ba
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Valve Head Diameter
·
Intake 37 mm (1.46 inch)
·
Exhaust 30 mm (1.18 inch)
·
Gauge Diameters 35.0 and 28.0 mm (1.378-
1.102 inch) Valve Face Runout Limit 0.05 mm (0.002 inch)
Valve Face Angle 45.5 degrees
Valve Stem Diameter (Std)
·
Intake 6.975-
6.995 mm (0.2754- 0.2746 inch) ·
Exhaust 6.949-
6.970 mm (0.2744- 0.2736 inch) Valve Springs
·
Compression Pressure (N (Lb) @ Spec
Length) ·
Intake 711.47 N @ 26.19 mm (159.9 Lb-
Ft @ 1.031
inch) ·
Exhaust 711.47 N @ 26.19 mm (159.9 Lb-
Ft @ 1.031
inch) ·
Free Length (Approximate) ·
Intake 42.16 mm (1.6598 inch)
·
Exhaust 42.16 mm (1.6598 inch)
·
Installed Pressure (N (Lb- Ft) @ Spec. Length) ·
Intake 289.1 N @ 36.14 mm (64.99 Lb-
Ft @ 1.4228
inch) ·
Exhaust 289.1 N @ 36.14 mm (64.99 Lb-
Ft @ 1.4228
inch) ·
Service Limit 10% Pressure Loss @ 28.02 mm (1.103 inch)
Roller Follower
·
Ratio 1.8:1
Hydraulic Lash Adjuster
·
Diameter (Std) 16.000-
15.988 mm (0.6299- 0.6294 inch) ·
Clearance to Bore 0.018-
0.069 mm (0.000709- 0.002717 inch) ·
Service Limit 0.016 mm (1.0006299 inch)
·
Hydraulic Leakdown Rate d 5-
25 seconds ·
Collapsed Lash Adjuster Gap— Desired 0.80-
1.20 mm (0.0315- 0.0472 inch) CAMSHAFT
Theoretical Valve Lift @ Zero Lash
·
Intake (Primary) 10.0 mm (0.3937 inch)
·
Intake (Secondary) 10.0 mm (0.3937 inch)
·
Exhaust 10.0 mm (0.3937 inch)
End Play 0.025-
0.165 mm (0.00098- 0.00649 inch) ·
Service Limit 0.190 mm (0.007480 inch)
Journal to Bearing Clearance 0.025-
0.076 mm (0.00098- 0.002992 inch) ·
Service Limit 0.100 mm (0.003937 inch) MAX
Journal Diameter (All) 26.962-
26.936 mm (1.0615- 1.0605 inch) Klj . 2 ba
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Bearing Inside Diameter (All) 27.012-
26.987 mm (1.0635- 1.0625 inch) Front Bearing Location e
CYLINDER BLOCK
·
Head Gasket Face Flatness 0.15 mm (0.006 in) MAX overall
·
Head Gasket Surface Finish b Main Bearing Bore Diameter 72.400-
72.424 mm (2.8504- 2.8513 inch) CRANKSHAFT
Main Bearing Journal Diameter 67.481-
67.505 mm (2.6567269- 2.6576718 inch) Connecting Rod Journal
·
Diameter 52.983-
53.003 mm (2.085941- 2.086728 inch) Crankshaft Free End Play 0.130-
0.301 mm (0.005118- 0.011850 inch) Crankshaft Runout to Rear Face of Block 0.050 mm (0.01969 inch) MAX
Connecting Rod Bearings
Clearance to Crankshaft
·
Desired 0.027-
0.069 mm (0.0010629- 0.0027165 inch) ·
Allowable 0.027-
0.069 mm (0.0010629- 0.0027165 inch) Bearing Wall Thickness (Std)
f 1.920-
1.928 mm (0.075591- 0.075905 inch) Main Bearings
Clearance to Crankshaft
·
Desired 0.025-
0.045 mm (0.00098- 0.00177 inch) ·
Allowable 0.025-
0.050 mm (0.00098- 0.00197 inch) Bearing Wall Thickness (Std)
f 2.451 mm (0.0965 inch)
Connecting Rod
·
Pin Bore Diameter 22.012-
22.024 mm (0.86661- 0.86708 inch) ·
Crankshaft Bearing Bore Diameter 56.866-
56.886 mm (2.23881- 2.23960 inch) ·
Length (Center- to-Center) 150.7 mm (5.933 inch)
Alignment (Bore-To-
Bore Max. Diff.) g ·
Twist 0.050 per 25 mm (0.00197 per 0.9843 inch)
·
Bend 0.038 per 25 mm (0.00150 per 0.9843 inch)
Side Clearance (Assembled to Crank)
·
Standard 0.15-
0.45 mm (0.00591- 0.01772 inch) ·
Service Limit 0.50 mm (0.01969 inch) MAX
CYLINDER BORE AND PISTON
Cylinder Bore
Diameter
h ·
Surface Finish (RMS) 0.2-
0.6 Microns ·
Out- of-Round Limit 0.015 mm
·
Out- of-Round Service Limit 0.020 mm
·
Taper Service Limit 0.006 mm
Piston
·
Diameter i .028 mm (.0010 inch) Klj . 3 ba
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