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Home >> Ford >> 2003 >> Cutaway 5.4 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine - 6.8L) >> Specifications >> General Specifications
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General Specifications

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G01537144

Item Specification
Displacement (CID) 6.8L (415)
No. Cylinder 10
Bore/Stroke 90.215/105.8 mm
Fire Order 1-6-5-10-2-7-3-8-4-9
Oil Pressure 93.33°C (200°F) 18 psi @ 650 rpm-100 psi @ 4,000 rpm
Cylinder Head/Valve Train 
Combustion Chamber Volume 52.6 - 51.6 cc
Valve Scat Width - Intake 2.1-1.9 mm
Valve Seat Width - Exhaust 2.1-1.9 mm
Valve Seat Angle 45.00-44.50 degrees
Valve Scat Runout (T.I.R.) 0.025 mm
Valve Arrangement (Front to Rear) 
Valve Stem Guide Clearance  
Intake 0.069-0.020 mm
Exhaust 0.095-0.045 mm
Valve Head Diameter  
Intake 44.63-44.37 mm
Exhaust 34.12-33.88 mm
Valve Face Runout (Limit) 0.05 mm
Valve Face Angle 45.75-45.25 degrees
Valve Stem Diameter  
Intake 6.995-6.975 mm
Exhaust 6.970-6.949 mm
Valve Spring Compression Pressure  
Intake (N @ Spec. Length) 667.3 N @ 28.02 mm
Exhaust (N @ Spec. Length) 667.3 N @ 28.02 mm
Valve Spring Free Length  
Intake 50.2 mm
Exhaust 50.2 mm
Valve Spring Installed Pressure N @ Spec, Length  
Intake 289,1 N @ 40.01 mm
Exhaust 289.1 N @ 40.01 mm
Valve Springs Installed Pressure N @ Spec. Length - Service Limit  
Intake 274.6 mm @ 40.01 mm
Exhaust 274.6 mm @ 40.01 mm
Valve Springs - Out of Square Limit  
Intake 2.5 degrees
Exhaust 2.5 degrees
Valve Guide Inside Diameter 7.044-7.015 mm
Camshaft 
Lobe Lift  
Intake 6.58077 mm
Exhaust 6.58551 mm
Lobe Lift - Allowable Lift Loss 0
Valve Lift @ Zero Lash  
Intake 12.00 mm
Exhaust 12.00 mm
Camshaft End Play 0.25-0.188 mm
End Play Service Limit 0.025-0.188 mm
Journal to Bearing Clearance 0.076-0.025 mm
Journal Diameters 26.962-26.936 mm
Journal Inside Diameter (Cap Assembled) 27.012-26.987 mm
Camshaft Runout: Full Indicator Measurement on all journals when supported on front and rear journals. 0.09 mm (5 Places)
Cylinder Bore Diameter  
Grade 1 90.200-90.210 mm
Grade 2 90.210-90.220 mm
Grade 3 90.220-90.230 mm
Piston 
Piston Diameter (Grade 2) at Right Angle to Pin Bore 90.180 ± 0.005 mm
Piston to Bore Clearance (-0.005) to +0.025 mm
Pin Bore Diameter (Piston) 22.008-22.014 mm
Pin Diameter 22.0005-22.0030 mm
Clearance (Neg. or Pos.) 0.01395-0.005 mm
Pin Bore Diameter (Rod) 22.012-22.024 mm
Clearance 0.009-0.0235 mm
Ring Groove Width  
Top 1.503-1.505 mm
Intermediate 1.502-1.504 mm
Oil Control 3.030-3.050 mm
Piston Ring Gap  
Top 0.13-0.28 mm
Intermediate 0.25-0.40 mm
Oil Control 0.15-0.65 mm
Crankshaft 
Main Bearing Journal Diameter 67.482-67.504
Maximum Out-of-Round 0.0075 mm Between Cross Sections
Maximum Taper (Straightness) 0.004 mm
Runout: FIM of center journals when located on front and rear journal 0.05 mm 3 Places
Clearance - Crankshaft Journal to Main Bearing Clearance 0.048-0.024 mm
Connecting Rod Journal Diameter 53.003-52.983 mm
Maximum Out-of-Round 0.0075 mm Between Cross Sections
Maximum Taper 0.004 mm
Crankshaft End Play 0.075-0.377
Connecting Rod 
Big End Journal Inside Diameter with Assembled Liners 53.049-53.027 mm
Rod Bearing to Journal Clearance 0.064-0.026 mm
Pin Bore Diameter (Rod) 22.024-22.012 mm
Balance Shaft System 
Balance Shaft Journal Diameter 26.962 - 26.936 mm
Clearance - Balance Shaft Journal to Cylinder Head 0.076 - 0.025 mm
Cylinder Head B/S Journal Diameter 27.012-26.987 mm
Gear Backlash 0.0076 - 0.1295 mm
Balance Shaft Endplay 0.04-0.18 mm
Rod Length (Centerline Bore-to-Bore) 169.1 mm
Alignment  
Bore-to-Bore Max. Twist ± 0.05 mm
Bore-to-Bore Max. Bend ± 0.038 mm
Side Play (As Assembled to Crank)  
Standard Play 0.410 ± 0.26 mm
Max Play 0.670 mm
Sealant and Lubricants 
Silicone Gasket and Sealant F7AZ-19554-EA WSE-M4G323-A4
Motorcraft Premium Engine Coolant VC-4-A (VC-5 in Oregon, CXC-10 in Canada) ESE-M97B44-A
Motorcraft Premium Gold Engine Coolant VC-7-A WSS-M97B51-A1
Super Premium SAE 5W-20 Engine Oil XO-5W20-QSP WSS-M2C153-H
Metal Surface Cleaner F4AZ-19A536-RA WSE-M5B392-A