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03·018-102
Engine, 4.6L (2V)
03·01 8-102
DISASSEMBLY AND ASSEMBLY (Continued)
3. Remove the cylinder head to block dowel and the
cylinder block drain plug.
Assembly
1 . Clean the gasket and seal surfaces of all
serviceable parts and assemblies.
2. Position the new cylinder blocks in a work stand
and install the cylinder head to block dowel and
the cylinder block drain plugs.
3. Transfer all serviceable parts removed
from
the
used cylinder blocks, following the procedures in
Disassembly and Assembly.
4. Check all assembly clearances and correct as
necessary.
SPECIFICATIONS
ENGINE SPECIFICATIONS
Description
Specification
GENERAL SPECIFICATIONS
Displacement
4.6L (281 CID)
Number of Cylinders
8
Bore and Stroke
90.2 x 90.0 mm (3.55 x
3.54 in)
Firing Order
1-3-7-2-6-5-4-8
011
Pressure (Hot,
1500
RPM)
138-310 kPa (20.01 -44.95
psi)
Drive BeH Tension
•
CYLINDER HEAD AND VALVE TRAINb
Combustion Chamber Volume
50 ± 1 cm3 (3. 1 73 ±0.09 15
in3)
Valve Sests
• Width-Intake
1.9-2 . 1 mm (0.0748-Q.0827
in)
• Width-Exhaust
1.9-2. 1 mm (0.0748-Q.0827
in)
• Angle
45 degrees
• Runout (T.I.R.) MAX
0.025 mm (0.00098 in)
Valve Arrangement
(Front-to-Rear)
(Left Hand)E-1-E-1-E-1-E·I
(Right Hand)I-E-1-E-1-E-1-E
Valve Stem to Guide Clearance
• Intake
0.020-0.069 mm
(0.00787-0.027 1 7 in)
• Exhaust
0.045-0.095 mm
(0.00 181-Q.00374 in)
Valve Head Diameter
• Intake
44.5 mm ( 1 . 752 in)
• Exhaust
34.0 mm ( 1.339 in)
• Gauge Diameters
42.5 mm and 32.0 mm
( 1.6732 in and 1.2598 in)
(Continued)
ENGINE SPECIFICATIONS (Cont'd)
Description
Specification
Valve Face Runout Limit
0.05 mm (0.00197 in)
Valve Face Angle
45.5 degrees
Valve Stem Diameter (Std)
• Intake
6.995-6.975 mm
(0.2754-0.27 46 in)
• Exhaust
6.970-6.949 mm
(0.27441-Q.27358 in)
Valve Springs
Compresalon Pressure N @
Spec Length
e lntake
667 N@ 28.02 mm (150 Lb
@ 1 . 1031 in)
• Exhaust
667 N @ 28.02 mm ( 150 Lb
@ 1 . 1 03 1 in)
• Free Length
(Approximate)
e lntake
50.2 mm (1.9764 in)
• Exhaust
50.2 mm ( 1.9764 in)
Installed Pressure N
@
Spec
Length
• Intake
289. 1 N @ 40.0 mm
(84.9897 Lb @ 1 .57 48 in)
• Exhaust
289. 1 N@ 40.0 mm
(84.9897 Lb @ 1.5748 in)
• Service Limit
10% Pressure Loss @
28.02 mm ( 1 . 1031 in)
• Out of Square Limit
2.5 Degrees
Rocker Arm
• Ratio
1 .82: 1
Valve Tappet
• Diameter (Std)
18.000- 15.966 mm
(0.6299-0.6294 in)
• Clearance to Bore
0.018-Q.089 mm
(0.0007 1-0.00272 in)
• Service Limit
0.018 mm (0.006299 In)
• Hydraulic Leakdown
5·25 seconds
Rate•
• Collapsed Valve Tappet
0.85-Q.45 mm
Gap-Desired
(0.03346-0.0 1772 in)
CAMSHAFT
Lobe
Lift
• Intake
8.58077 mm (0.2594 in)
• Exhaust
8.58077 mm (0.2594 in)
• Allowable Lobe Lift Loss
Theoretical Valve
Lift @
Zero
Lash
• Intake
1 2.0 mm (5.6693 in)
• Exhaust
1 2.0 mm (5.6693 in)
End Play
0.025-o. 166
(0.06098·0.00740 in)
• Service Limit
0. 1 90 mm (0.00748 in)
Journal to Bearing Clearance
0.025-Q.076 mm
(0.00098·0.00299 in)
• Service Limit
0. 1 2 1 mm (0.00476 in)
(Continued)
1997 Thunderbird. Cougar July 1996
Содержание Thunderbird
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