Generation 4 - 3.0L (4V) "Duratec" Specifications
From Taurus Car Club Maintenance and Modification Wiki
4th Generation Duratec Specs
General Specifications Item Specification
- Engine
- Displacement 2967 cc (181 cid), 3.0L
- Number of cylinders 6
- Bore 89.0 mm (3.50 in)
- Stroke 79.5 mm (3.13 in)
- Firing order 1-4-2-5-3-6
- Oil pressure (minimum at 1,500 rpm with engine warmed up after 10 minutes of idling.) 76 kPa (11 psi)
- Oil capacity 5.5 L (5.8 qts)
- Compression ratio —
- Cylinder Head and Valve Train
- Cylinder head distortion b
- Combustion chamber volume 52 cc (3.17 CI)
- Valve arrangement (front to rear)
- LH intake S-P-S-P-S-P
- LH exhaust E-E-E-E-E-E
- RH intake P-S-P-S-P-S
- RH exhaust E-E-E-E-E-E
- Valve guide bore diameter —
- Valve stem diameter — intake 5.975-5.995 mm (0.2350-0.2358 in)
- Valve stem diameter — exhaust 5.950-5.970 mm (0.2343-0.2350 in)
- Valve stem-to-guide clearance — intake 0.020-0.069 mm (0.0007-0.0027 in)
- Valve stem-to-guide clearance — exhaust 0.045-0.094 mm (0.0017-0.037 in)
- Valve head diameter — intake 35 mm (1.38 in)
- Valve head diameter — exhaust 30 mm (1.18 in)
- Valve head diameter — gauge diameter 31 and 24.5 mm (1.22 and 0.96 in)
- Valve face runout 0.05 mm (0.001 in)
- Valve face angle 45.5 degrees
- Valve seat width — intake 1.1-1.4 mm (0.043-0.055 in)
- Valve seat width — exhaust 1.4-1.7 mm (0.055-0.066 in)
- Valve seat runout 0.04 mm (0.001 in)
- Valve seat angle 44.75 degrees
- Valve spring free length (approx.) 46.8 mm (1.84 in)
- Valve spring squareness 1%
- Valve spring compression pressure (N @ spec. length) 680 N @ 30.19 mm (153 lbs @ 1.18 in)
- Valve spring installed height (N @ spec. length) —
- Valve spring installed pressure 228 N @ 39.99 mm (51 lbs @ 1.57 in)
- Valve spring installed pressure — service limit 10% force loss @ specified height
- Roller follower ratio 1.8:1
- Hydraulic Lash Adjuster
- Diameter (standard) 16-15.988 mm (0.6290-0.6294 in)
- Clearance-to-bore 0.018-0.069 mm (0.0007-0.0027 in)
- Service limit 0.016 mm (0.0006 in)
- Hydraulic leakdown rate 5-25 seconds
- Collapsed lash adjuster gap 0.50-1.11 mm (0.019-0.043 in)
- Camshaft
- Theoretical valve lift @ 0 lash 9.80 mm (0.388 in)
- Lobe lift 4.79 mm (0.188 in)
- Allowable lobe lift loss 0 mm (0.0 in)
- Journal diameter (all) 26.962-26.936 mm (1.061-1.060 in)
- Camshaft journal bore inside diameter 27.012-26.987 mm (1.063-1.062 in)
- Camshaft journal-to-bearing clearance — standard 0.025-0.076 mm (0.001-0.0029 in)
- Camshaft journal-to-bearing clearance — service limit 0.121 mm (0.0047 in)
- Runout —
- End play — service limit 0.190 mm (0.00748 in)
- Cylinder Block
- Cylinder bore diameter — grade 1 89.000-89.010 mm (3.50393-3.504323 in)
- Cylinder bore diameter — grade 2 89.010-89.020 mm (3.504323-3.504717 in)
- Cylinder bore diameter — grade 3 89.020-82.030 mm (3.504717-3.50511 in)
- Cylinder bore maximum taper 0.020 mm (0.008 in)
- Cylinder bore maximum out-of-round 0.015 mm (0.0005 in)
- Cylinder bore maximum out-of-round — service limit 0.020 mm (0.0007 in)
- Main bearing bore inside diameter 67.998-68.022 mm (2.677-2.6780 in)
- Head gasket surface flatness —
- Crankshaft
- Main bearing journal diameter 62.968-62.992 mm (2.479-2.480 in)
- Main bearing journal maximum taper —
- Main bearing journal maximum out-of-round —
- Main bearing journal-to-cylinder block clearance —
- Connecting rod journal diameter 49.970-49.990 mm (1.967-1.968 in)
- Connecting rod journal maximum taper —
- Connecting rod journal maximum out-of-round —
- Crankshaft maximum end play 0.135-0.255 mm (.005-.010 in)
- Piston and Connecting Rod
- Piston diameter — coated, grade 1 88.990-89.010 mm (3.5035-3.5043 in)
- Piston diameter — coated, grade 2 88.998-89.022 mm (3.5039-3.5048 in)
- Piston diameter — coated, grade 3 89.010-89.030 mm (3.5043-3.5051 in)
- Piston diameter — uncoated, grade 1 88.970-88.980 mm (3.50275-3.50314 in)
- Piston diameter — uncoated, grade 2 88.978-88.992 mm (3.50306-3.50362 in)
- Piston diameter — uncoated, grade 3 89.010-89.030 mm (3.50432-3.50511 in)
- Piston-to-cylinder bore clearance 0.012 to 0.022 mm (0.0005-0.0009 in)
- Piston ring end gap — compression (top, gauge diameter)c 0.100-0.250 mm (0.0039-0.0098 in)
- Piston ring end gap — compression (bottom, gauge diameter) 0.27-0.42 mm (0.0106-0.0165 in)
- Piston ring end gap — oil ring (steel rail, gauge diameter) 0.15-0.65 mm (0.0059-0.0255 in)
- Piston ring end gap — compression (top, service limit) 0.50 mm max (0.0196 in)
- Piston ring end gap — compression (bottom, service limit) 0.65 mm max (0.0255 in)
- Piston ring end gap — oil ring (steel rail, service limit) 0.90 mm max (0.0354 in)
- Piston ring groove width — compression (top) 1.230-1.245 mm (0.0484-0.0490 in)
- Piston ring groove width — compression (bottom) 1.530-1.545 mm (0.0602-0.0608 in)
- Piston ring groove width — oil ring 3.030-3.055 mm (0.1192-0.1203 in)
- Piston ring width —
- Piston ring-to-groove clearance —
- Piston pin bore diameter 21.008-21.012 mm (0.8270-0.8272 in)
- Piston pin diameter 21.011-21.013 mm (0.8271-0.8273 in)
- Piston pin length 60.51-60.08 mm (2.382-2.365 in)
- Piston pin-to-piston fit -0.005 to +0.001 mm (0.0001-0.00003 in)
- Piston-to-connecting rod clearance —
- Connecting rod-to-pin clearance — standard 0.004-0.202 mm (0.0001-0.0007 in)
- Connecting rod-to-pin clearance — service limit 0.035 mm (0.0013 in)
- Connecting rod pin bore diameter 21.017-21.031 mm (0.827-0.828 in)
- Connecting rod length (center-to-center) 138.06-138.14 mm (5.435-5.438 in)
- Connecting rod maximum allowed bend 0.038 mm per 25 (0.0014 per 0.984 in)
- Connecting rod maximum allowed twist 0.050 mm per 25 (0.0019 per 0.984 in)
- Connecting rod bearing bore diameter 53.015-53.035 mm (2.0872-2.0879 in)
- Connecting rod bearing-to-crankshaft clearance 0.028-0.066 mm (0.001-0.0025 in)
- Connecting rod side clearance 0.100-0.30 mm (0.0039-0.0118 in)
a With filter change. c Specification 82.4 mm (3.2441 in) diameter gauge.
