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Engine Specifications

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Engine Specifications Engine

Description Specification
GENERAL SPECIFICATIONS 
Displacement  4.6L (4V) (281 CID)
Number of Cylinders  8
Bore and Stroke  90.2 x 90.0 mm (3.55 x 3.54 inch)
Firing Order  1-3-7-2-6-5-4-8
Oil Pressure (HOT 1500 RPM)  138-310 kPa
Drive Belt Tension  (1)
Combustion Chamber Volume (cc)  52.6± 0.5 cmc
Valve Seats   
 
  • Width-Intake
 1.8-2.2 mm (0.071-0.086 inch)
 
  • Width-Exhaust
 1.8-2.2 mm (0.071-0.086 inch)
 
  • Angle
 45 degrees
 
  • Runout (T.I.R.) Max
 0.05 mm (0.002 inch)
Valve Arrangement (Front-to-Rear)  (2)   
 
  • (Left Hand) Intake:
 S-P-S-P-S-P-S-P
 
  • Exhaust:
 E-E-E-E-E-E-E-E
 
  • (Right Hand) Intake:
 P-S-P-S-P-S-P-S
 
  • Exhaust: (C)
 E-E-E-E-E-E-E-E
Valve Stem to Guide Clearance   
 
  • Intake
 0.020-0.069 mm (0.00078-0.00272 inch)
 
  • Exhaust
 0.046-0.095 mm (0.0018-0.0037 inch)
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 (3)
 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)
Bearing Inside Diameter (All)  27.012-26.987 mm (1.0635-1.0625 inch)
Front Bearing Location  (4)
CYLINDER BLOCK 
 
  • Head Gasket Face Flatness
 0.15 mm (0.006 in) MAX overall
 
  • Head Gasket Surface Finishb
  
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  0.1300-0.301 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) (5) 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)  (5)  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.)  (6)   
 
  • 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  (7)   
 
  • 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   
  .028 mm (.0010 inch)
 
  • Coded Red 1
 90.167-90.188 mm (3.299-3.5505 inch)
 
  • Coded Blue 2
 90.180-90.195 mm (3.5504-3.5510 inch)
 
  • Coded Yellow 3
 90.198-90.208 mm
Coated Piston-to-Bore Clearance  -0.010/+0.026 mm (-0.0003937/+0.0010236 inch)
Pin Bore Diameter  21.9985-22.0025 mm (0.866081-0.866238 inch)
Ring Groove Width   
 
  • Compression (Top)
 1.230-1.250 mm (0.484-0.0492 inch)
 
  • Compression (Bottom)
 1.520-1.540 mm (0.05984-0.06062 inch)
 
  • Oil Ring
 3.030-3.055 mm
Piston Pin   
 
  • Length
 61.601-62.030 mm (2.42523-2.44212 inch)
 
  • Diameter
 22.0005-22.0030 mm (0.8661596-0.8662581 inch)
Pin to Piston Fit  (9)  -0.0045/+0.002 mm (-0.000177/+0.0000787 inch)
Pin to Rod Clearance   
 
  • Standard
 0.004-0.0175 mm (0.000157-0.00689 inch)
 
  • Service Limit
 0.035 mm (0.001378 inch)
Oil Ring  1.15 mm (0.04528 inch) MAX
 
  • Side Clearance
 .075-.1000 mm (.0030-.0040 inch)
 
  • Compression (Top)
 0.0090-0.0235 mm (0.000354-0.000925 inch)
 
  • Compression (Bottom)
 0.030-0.080 mm (0.00118-0.00315 inch)
 
  • Oil Ring
 Snug Fit
Ring Gap  (10)   
 
  • Compression (Top)
 . 150-.300 mm (.006-0.0018 inch)
 
  • Compression (Bottom)
 0.300-0.550 mm (0.0018-0.0022 inch)
 
  • Oil Ring (Steel Rail)
 0.15-0.66 mm (0.00591-0.02598 inch)
Piston Rings   
 
  • Ring Gap
  
 
  • Compression (Top)
 1.00 mm (0.03937 inch) MAX
 
  • Compression (Bottom)
 1.00 mm (0.03937 inch) MAX
 
  • Service Limit
 1.15 mm (0.04528 inch) MAX
LUBRICATION SYSTEM
Oil Capacity (Quarts U.S.) 6 ± 0.25 (11)
(1) Newly Installed-Refers to the condition of the "NEW" drive belt before the engine has made no more than one rotation and before the belt has had a chance to stretch or seat into the pulley grooves.
(2) P=Primary, S=Secondary, E=Exhaust
(3) Time necessary for plunger to leak down 1.6 mm of travel with 222 N force and leak down fluid in tappet.
(4) Distance front edge of bearing is installed below front face of cylinder block.
(5) 0.050 Undersize-add 0.025 to standard thickness.
(6) Pin bore and crank bearing bore must be parallel and in same vertical plane within the specified total difference when measured at the ends of a 203 mm bar, 101.5 mm on each side of rod centerline.
(7) Cylinder Bore Diameter - Red-90.200-90.213 - Blue-90.213-90.226 - Yellow-90.226-90.239
(8) Measured at 42 mm from piston dome, at 90 degrees to the piston pin.
(9) Piston pin outer diameter is larger than piston pin bore, providing a possible interference fit.
(10) Specification in 90.200 mm diameter gauge.
(11) With installation of a new filter.
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