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General Specifications

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ENGINE - 3.8L GENERAL SPECIFICATIONS

Item Specification
Lubricants and Sealants 
SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP WSS-M2CI53-H
Gasket and Trim Adhesive F3AZ-19B508-AA HSH-M2G52-A
Pipe Sealant with Teflon® D8AZ-19554-A WSK-M2G350-A2
Silicone Gasket and Sealant F7AZ-19554-EA WSE-M4G323-A4
Metal Surface Cleaner F4AZ-19A536-RA WSE-M5B392-A
Engine 
Displacement 3.8L
Number of cylinders 6
Bore 96.8325 mm (3.81 in)
Stroke 86.0 mm (3.39 in)
Firing order 1-4-2-5-3-6
Oil pressure (hot 2,500 rpm) 40-125 psi
Oil capacity 5 quarts w/filter change
Compression ratio -
Cylinder Head and Valve Train 
Cylinder head gasket surface flatness 0.18 mm (0.007 in)
Combustion chamber volume 61.5-64.5 cc
Valve arrangement (front to rear) -
Valve guide bore diameter 7.015-7.044 mm (0.276-0.277 in)
Valve stem diameter - intake 6.955-6.988 mm (0.2738-0.2751 in)
Valve stem diameter - exhaust 6.929-6.962 mm (0.2728-0.2741 in)
Valve stem diameter - oversize (intake) 9.075-9.055 mm (0.3573-0.3565 in)
Valve stem diameter - oversize (exhaust) 9.063-9.043 mm (0.3568-0.3560 in)
Valve stem diameter - oversize (intake) 9.456-9.436 mm (0.3723-0.3715 in)
Valve stem diameter - oversize (exhaust) 9.444-9.424 mm (0.3718-0.3710 in)
Valve stem-to-guide clearance - intake 0.020-0.069 mm (0.045-0.090 in)
Valve stem-to-guide clearance - exhaust 0.038-0.083 mm (0.0015-0.0033 in)
Valve head diameter - intake 47.27 mm (1.86 in)
Valve head diameter - exhaust 37.1 mm (1.46 in)
Valve face runout 0.05 mm (0.002 in)
Valve face angle 45.675 degrees
Valve seat width 1.5-2.0 mm (0.06-0.08 in)
Valve seat runout (T.I.R.) 0.076 mm (0.003 in)
Valve seat angle 44.75 degrees
Valve spring free length -
Valve spring squareness -
Valve spring compression pressure - valve open (without damper) 1000 N (224 lbs) @ 29.2 mm (1.16 in)
Valve spring compression pressure - valve closed (without damper) 350 N (79 lbs) @ 40.7 mm (1.62 in)
Valve spring installed height 40.7 mm (1.62 in)
Valve spring installed pressure -
Rocker arm ratio 1.73
Hydraulic Lash Adjuster 
Diameter 22.195-22.212 mm (0.8738-0.8745 in)
Clearance-to-bore 0.018-0.068 mm (0.0007-0.0027 in)
Service limit 0.127 mm (0.005 in)
Hydraulic leakdown rate (1)
Collapsed lash adjuster gap -
Camshaft 
Theoretical valve lift @ 0 lash - intake 11.30 mm (0.45 in)
Theoretical valve lift @ 0 lash - exhaust 11.47 mm (0.45 in)
Lobe lift - intake 6.53 mm (0.257 in)
Lobe lift - exhaust 6.57 mm (0.259 in)
Allowable lobe lift loss 0.127 mm (0.005 in)
Journal diameter 52.082-52.108 mm (2.0505-2.0515 in)
Camshaft journal bore inside diameter - No. 1 55.689-55.664 mm (2.192-2.191 in)
Camshaft journal bore inside diameter - No. 2 and No. 3 55.308-55.283 mm (2.177-2.176 in)
Camshaft journal bore inside diameter - No. 4 55.684-55.664 mm (2.192-2.191 in)
Camshaft journal-to-bearing clearance 0.025-0.076 mm (0.001-0.003 in)
Runout 0.05 mm (0.002 in) runout of No. 2 or No. 3 relative to No. 1 and No. 4
End play 0.025-0.150 mm (0.001-0.006 in)
Cylinder Block 
Cylinder bore diameter 96.813 mm (3.81 in)
Cylinder bore maximum taper 0.050 mm (0.002 in)
Cylinder bore maximum out-of-round 0.050 mm (0.002 in)
Main bearing bore inside diameter 68.905 mm (2.713 in) 68.885 mm (2.712 in)
Camshaft bearing bore inside diameter - intake 47.097 mm (1.8542 in) max. 47.072 mm (1.8532 in) min.
Camshaft bearing bore inside diameter - exhaust 39.739 mm (1.5645 in) max. 39.714 mm (1.5635 in) min.
Head gasket surface flatness 0.08 mm (0.003 in) in 152.0 mm (6.00 in)
Crankshaft 
Main bearing journal diameter 63.983-64.003 mm (2.5190-2.5198 in)
Main bearing journal maximum taper 0.008 mm (0.0003 in) per 25 mm (1.0 in)
Main bearing journal maximum out-of-round 0.008 mm (0.0003 in) max. in 45 degrees, 0.015 mm (0.006 in) total
Main bearing journal-to-cylinder block clearance - desired 0.025-0.035 mm (0.001-0.0014 in)
Main bearing journal-to-cylinder block clearance - allowable 0.013-0.058 mm (0.0005-0.0023 in)
Connecting rod journal diameter 58.682-58.702 mm (2.3103-2.3111 in)
Connecting rod journal maximum taper 0.008 mm per 25 mm (0.0003 in per in)
Connecting rod journal maximum out-of-round 0.008 mm (0.0003 in) max. in 45 degrees, 0.015 mm (0.0006 in) total
Crankshaft maximum end play 0.10-020 mm (0.004-0.008 in)
Piston and Connecting Rod  
Piston diameter - code red 96.795-96.782 mm (3.8108-3.8103 in)
Piston diameter - code blue 96.808-96.795 mm (3.8113-3.8108 in)
Piston diameter - code yellow 96.821-96.808 mm (3.8118-3.8113 in)
Piston-to-cylinder bore clearance (undercoated clearance) 0.018-0.044 mm (0.0007-0.0017 in)
Piston ring end gap - compression (top, in gauge) 0.17-0.33 mm (0.0067-0.013 in)
Piston ring end gap - compression (bottom, in gauge) 0.3-0.55 mm (0.0118-0.0217 in)
Piston ring end gap - oil ring (steel rail, in gauge) 0.15-0.65 mm (0.0059-0.0256 in)
Piston ring groove width - compression (top) 1.54-1.52 mm (0.0606-0.0598 in)
Piston ring groove width - compression (bottom) 1.54-1.52 mm (0.0606-0.0598 in)
Piston ring groove width - compression (oil) 3.05-3.03 mm (0.1200-0.1193 in)
Piston ring width - compression (top and bottom) 1.460-1.490 mm (0.0575-0.0587 in)
Piston ring width - compression (oil) Side seal - snug fit
Piston ring-to-groove clearance (1st and 2nd ring) 0.030-0.080 mm (0.0012-0.0032 in)
Piston pin bore diameter 22.94-22.98 mm (0.9032-0.9047 in)
Piston pin diameter 23.000-23.003 mm (0.9055-0.9056 in)
Piston pin length 63.55-63.05 mm (2.5096-2.4823 in)
Piston pin-to--piston fit 0.011-0.018 mm (0.0004-0.0007 in)
Piston-to-connecting rod clearance -
Connecting rod-to-pin clearance Press fit 8 kilonewtons (1,800 lbs)
Connecting rod pin bore diameter -
Connecting rod length (center-to-center) 154.66-154.74 mm (6.0890-6.0921 in)
Connecting rod maximum allowed bend 0.04 per 25 mm (0.0016 per in)
Connecting rod maximum allowed twist 0.059 per 25 mm (0.002 per in)
Connecting rod bearing bore diameter 61.635-61.655 mm (2.4266-2.4274 in)
Connecting rod bearing-to-crankshaft clearance - desired 0.025-0.035 mm (0.001-0.0014 in)
Connecting rod bearing-to-crankshaft clearance - allowable 0.022-0.069 mm (0.00086-0.0027 in)
Connecting rod side clearance 0.11-0.49 mm (0.0047-0.0193 in)
Balance Shaft 
Journal diameter 52.108-52.082 mm (2.0515-2.0505 in)
Bore inside diameter 55.689-55.664 mm (2.192-2.191 in)
Maximum runout 0.025 mm (0.001 in)
End play 0.075-0.200 mm (0.003-0.008 in)
(1) 20-200 seconds to leakdown 3.18 mm (0.125 in) with 225 Newtons (50 pounds) load and tappet filled with leak-down fluid.