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Ford Raptor Engine Discussion and Performance Mods
6.2 L tidbits
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<blockquote data-quote="FSM06" data-source="post: 85589" data-attributes="member: 77"><p>General Specifications </p><p></p><p>Item Specification </p><p>Engine </p><p>Displacement 6.2L (379 CID) </p><p>Number of cylinders 8 </p><p>Bore 102 mm (4.015 in) </p><p>Stroke 95 mm (3.74 in) </p><p>Firing order 1-3-7-2-6-5-4-8 </p><p>Spark plug CYFS-092FP </p><p>Spark plug gap 0.95 mm (0.037 in) </p><p>Minimum oil pressure at idle (engine at normal operating temperature) 55 kPa (8 psi) </p><p>Oil pressure at 2,000 rpm (engine at normal operating temperature) — </p><p>Compression ratio 9.8:1 </p><p>Engine weight (without accessory drive components and with flexplate) 263 kg (580 lb) </p><p>Cylinder Head and Valve Train </p><p>Combustion chamber volume 48.1-51.1 cc (2.94-3.12 cu in) </p><p>Valve arrangement (front to rear) — LH E-I-E-I-E-I-E-I </p><p>Valve arrangement (front to rear) — RH E-I-E-I-E-I-E-I </p><p>Rocker arm ratio — Exhaust — </p><p>Rocker arm ratio — Intake — </p><p>Valve guide bore diameter 7.953-7.975 mm (0.3131-0.3139 in) </p><p>Valve stem diameter — intake 7.933-7.953 mm (0.3123-0.3131 in) </p><p>Valve stem diameter — exhaust 7.921-7.942 mm (0.3118-0.3126 in) </p><p>Valve stem-to-guide clearance — intake 0.022-0.072 mm (0.0008-0.0028 in) </p><p>Valve stem-to-guide clearance — exhaust 0.034-0.084 mm (0.0013-0.0033 in) </p><p>Valve head diameter — intake 53.5 mm (2.106 in) </p><p>Valve head diameter — exhaust 42 mm (1.653 in) </p><p>Valve face runout — intake 0.060 mm (0.0023 in) </p><p>Valve face runout — exhaust 0.050 mm (0.0019 in) </p><p>Valve face angle 45.5 degrees </p><p>Valve seat width — intake 1.4-1.6 mm (0.05-0.06 in) </p><p>Valve seat width — exhaust 1.6-1.8 mm (0.06-0.07 in) </p><p>Valve seat angle 44.5-45.0 degrees </p><p>Valve spring free length 65.1 mm (2.562 in) </p><p>Valve spring compression pressure 23 N (45 lb) @ 54.72 mm (2.154 in) </p><p>Valve spring installed height 54.72 mm (2.154 in) </p><p>Valve spring installed pressure 23 N (45 lb) @ 54.72 mm (2.154 in) </p><p>Head gasket surface flatness 0.025 mm (0.001 in) in any 25 mm (1 in) x 25 mm (1 in) area; 0.05 mm (0.002 in) in any 150 mm (6 in) x 150 mm (6 in) area; 0.1 mm (0.004 in) overall </p><p>Camshaft </p><p>Theoretical valve lift @ 0 lash — intake 13.25 mm (0.521 in) </p><p>Theoretical valve lift @ 0 lash — exhaust 13 mm (0.511 in) </p><p>Lobe lift — intake 8.019 mm (0.315 in) </p><p>Lobe lift — exhaust 7.861 mm (0.309 in) </p><p>Allowable lobe lift loss 0.127 mm (0.005 in) </p><p>Journal diameter 28.587-28.613 mm (1.125-1.126 in) </p><p>Camshaft journal bore inside diameter 28.657-28.682 mm (1.128-1.129 in) </p><p>Camshaft journal-to-bearing clearance 0.044-0.095 mm (0.0017-0.0037 in) </p><p>Runout 0.025 mm (0.0009 in) </p><p>End play 0.025-0.150 mm (0.0009-0.0059 in) </p><p>Cylinder Block </p><p>Cylinder bore diameter — grade 1 102.000-102.010 mm (4.0157-4.0161 in) </p><p>Cylinder bore diameter — grade 2 102.010-102.020 mm (4.0161-4.0165 in) </p><p>Cylinder bore diameter — grade 3 102.020-102.030 mm (4.0165-4.0169 in) </p><p>Cylinder bore maximum taper 0.016 mm (0.0006 in) </p><p>Cylinder bore maximum out-of-round 0.020 mm (0.0008 in) </p><p>Main bearing bore inside diameter 72.400-72.424 mm (2.8504-2.8509 in) </p><p>Head gasket surface flatness 0.03 mm (0.001 in) in any 40 mm (1.5 in) x 40 mm (1.5 in) area; 0.05 mm (0.002 in) in any 150 mm (6 in) x 150 mm (6 in) area; 0.025 mm (0.0009) in any 25mm (0.984 in) x 25 mm (0.984 in) area overall </p><p>Crankshaft </p><p>Main bearing journal diameter 67.481-67.505 mm (2.6568-2.6576 in) </p><p>Main bearing journal maximum taper 0.008 mm (0.0003 in) </p><p>Main bearing journal maximum out-of-round 0.006 mm (0.0002 in) </p><p>Main bearing journal-to-cylinder block clearance 0.025-0.050 mm (0.0009-0.0019 in) </p><p>Connecting rod journal diameter 52.733-52.753 mm (2.0761-2.0768 in) </p><p>Connecting rod journal maximum taper 0.008 mm (0.0003 in) </p><p>Connecting rod journal maximum out-of-round 0.006 mm (0.0002 in) </p><p>Crankshaft end play 0.140-0.260 mm (0.005-0.010 in) </p><p>Piston and Connecting Rod </p><p>Piston diameter — grade 1 (at right angle to pin bore) 101.960 mm (4.0141 in) </p><p>Piston diameter — grade 2 (at right angle to pin bore) 101.970 mm (4.0145 in) </p><p>Piston diameter — grade 3 (at right angle to pin bore) 102 mm (4.0157 in) </p><p>Piston-to-cylinder bore clearance (at grade size) 0.010-0.040 mm (0.0003-0.0015 in) </p><p>Piston ring end gap — top 0.35-0.50 mm (0.137-0.0196 in) </p><p>Piston ring end gap — intermediate 0.35-0.50 mm (0.137-0.0196 in) </p><p>Piston ring end gap — oil control 0.15-0.65 mm (0.005-0.025 in) </p><p>Piston ring groove width — top 1.5 mm (0.059 in) </p><p>Piston ring groove width — intermediate 1.5 mm (0.059 in) </p><p>Piston ring groove width — oil control 2.5 mm (0.098 in) </p><p>Piston ring width — top and intermediate 1.5 mm (0.059 in) </p><p>Piston ring-to-groove clearance — top 1.47-1.50 mm (0.0578-0.0590 in) </p><p>Piston ring-to-groove clearance — intermediate 1.47-1.50 mm (0.0578-0.0590 in) </p><p>Piston pin bore diameter 24 mm (0.944 in) </p><p>Piston pin diameter 24 mm (0.944 in) </p><p>Piston pin length 62 mm (2.44 in) </p><p>Piston pin-to-piston fit 0.17-0.80 mm (0.006-0.0031 in) </p><p>Connecting rod-to-pin clearance 0.3-0.18 mm (0.001-0.007 in) </p><p>Connecting rod pin bore diameter 24.009 mm (0.945 in) </p><p>Connecting rod length (center-to-center) 157.50 mm (6.2 in) </p><p>Connecting rod maximum allowed bend 0.038 mm (0.0015 in) </p><p>Connecting rod bearing bore diameter (with assembled liners) — </p><p>Connecting rod bearing-to-crankshaft clearance 0.025-0.065 mm (0.0009-0.0025 in) </p><p>Connecting rod side clearance 1.0 mm (0.039 in)</p></blockquote><p></p>
[QUOTE="FSM06, post: 85589, member: 77"] General Specifications Item Specification Engine Displacement 6.2L (379 CID) Number of cylinders 8 Bore 102 mm (4.015 in) Stroke 95 mm (3.74 in) Firing order 1-3-7-2-6-5-4-8 Spark plug CYFS-092FP Spark plug gap 0.95 mm (0.037 in) Minimum oil pressure at idle (engine at normal operating temperature) 55 kPa (8 psi) Oil pressure at 2,000 rpm (engine at normal operating temperature) — Compression ratio 9.8:1 Engine weight (without accessory drive components and with flexplate) 263 kg (580 lb) Cylinder Head and Valve Train Combustion chamber volume 48.1-51.1 cc (2.94-3.12 cu in) Valve arrangement (front to rear) — LH E-I-E-I-E-I-E-I Valve arrangement (front to rear) — RH E-I-E-I-E-I-E-I Rocker arm ratio — Exhaust — Rocker arm ratio — Intake — Valve guide bore diameter 7.953-7.975 mm (0.3131-0.3139 in) Valve stem diameter — intake 7.933-7.953 mm (0.3123-0.3131 in) Valve stem diameter — exhaust 7.921-7.942 mm (0.3118-0.3126 in) Valve stem-to-guide clearance — intake 0.022-0.072 mm (0.0008-0.0028 in) Valve stem-to-guide clearance — exhaust 0.034-0.084 mm (0.0013-0.0033 in) Valve head diameter — intake 53.5 mm (2.106 in) Valve head diameter — exhaust 42 mm (1.653 in) Valve face runout — intake 0.060 mm (0.0023 in) Valve face runout — exhaust 0.050 mm (0.0019 in) Valve face angle 45.5 degrees Valve seat width — intake 1.4-1.6 mm (0.05-0.06 in) Valve seat width — exhaust 1.6-1.8 mm (0.06-0.07 in) Valve seat angle 44.5-45.0 degrees Valve spring free length 65.1 mm (2.562 in) Valve spring compression pressure 23 N (45 lb) @ 54.72 mm (2.154 in) Valve spring installed height 54.72 mm (2.154 in) Valve spring installed pressure 23 N (45 lb) @ 54.72 mm (2.154 in) Head gasket surface flatness 0.025 mm (0.001 in) in any 25 mm (1 in) x 25 mm (1 in) area; 0.05 mm (0.002 in) in any 150 mm (6 in) x 150 mm (6 in) area; 0.1 mm (0.004 in) overall Camshaft Theoretical valve lift @ 0 lash — intake 13.25 mm (0.521 in) Theoretical valve lift @ 0 lash — exhaust 13 mm (0.511 in) Lobe lift — intake 8.019 mm (0.315 in) Lobe lift — exhaust 7.861 mm (0.309 in) Allowable lobe lift loss 0.127 mm (0.005 in) Journal diameter 28.587-28.613 mm (1.125-1.126 in) Camshaft journal bore inside diameter 28.657-28.682 mm (1.128-1.129 in) Camshaft journal-to-bearing clearance 0.044-0.095 mm (0.0017-0.0037 in) Runout 0.025 mm (0.0009 in) End play 0.025-0.150 mm (0.0009-0.0059 in) Cylinder Block Cylinder bore diameter — grade 1 102.000-102.010 mm (4.0157-4.0161 in) Cylinder bore diameter — grade 2 102.010-102.020 mm (4.0161-4.0165 in) Cylinder bore diameter — grade 3 102.020-102.030 mm (4.0165-4.0169 in) Cylinder bore maximum taper 0.016 mm (0.0006 in) Cylinder bore maximum out-of-round 0.020 mm (0.0008 in) Main bearing bore inside diameter 72.400-72.424 mm (2.8504-2.8509 in) Head gasket surface flatness 0.03 mm (0.001 in) in any 40 mm (1.5 in) x 40 mm (1.5 in) area; 0.05 mm (0.002 in) in any 150 mm (6 in) x 150 mm (6 in) area; 0.025 mm (0.0009) in any 25mm (0.984 in) x 25 mm (0.984 in) area overall Crankshaft Main bearing journal diameter 67.481-67.505 mm (2.6568-2.6576 in) Main bearing journal maximum taper 0.008 mm (0.0003 in) Main bearing journal maximum out-of-round 0.006 mm (0.0002 in) Main bearing journal-to-cylinder block clearance 0.025-0.050 mm (0.0009-0.0019 in) Connecting rod journal diameter 52.733-52.753 mm (2.0761-2.0768 in) Connecting rod journal maximum taper 0.008 mm (0.0003 in) Connecting rod journal maximum out-of-round 0.006 mm (0.0002 in) Crankshaft end play 0.140-0.260 mm (0.005-0.010 in) Piston and Connecting Rod Piston diameter — grade 1 (at right angle to pin bore) 101.960 mm (4.0141 in) Piston diameter — grade 2 (at right angle to pin bore) 101.970 mm (4.0145 in) Piston diameter — grade 3 (at right angle to pin bore) 102 mm (4.0157 in) Piston-to-cylinder bore clearance (at grade size) 0.010-0.040 mm (0.0003-0.0015 in) Piston ring end gap — top 0.35-0.50 mm (0.137-0.0196 in) Piston ring end gap — intermediate 0.35-0.50 mm (0.137-0.0196 in) Piston ring end gap — oil control 0.15-0.65 mm (0.005-0.025 in) Piston ring groove width — top 1.5 mm (0.059 in) Piston ring groove width — intermediate 1.5 mm (0.059 in) Piston ring groove width — oil control 2.5 mm (0.098 in) Piston ring width — top and intermediate 1.5 mm (0.059 in) Piston ring-to-groove clearance — top 1.47-1.50 mm (0.0578-0.0590 in) Piston ring-to-groove clearance — intermediate 1.47-1.50 mm (0.0578-0.0590 in) Piston pin bore diameter 24 mm (0.944 in) Piston pin diameter 24 mm (0.944 in) Piston pin length 62 mm (2.44 in) Piston pin-to-piston fit 0.17-0.80 mm (0.006-0.0031 in) Connecting rod-to-pin clearance 0.3-0.18 mm (0.001-0.007 in) Connecting rod pin bore diameter 24.009 mm (0.945 in) Connecting rod length (center-to-center) 157.50 mm (6.2 in) Connecting rod maximum allowed bend 0.038 mm (0.0015 in) Connecting rod bearing bore diameter (with assembled liners) — Connecting rod bearing-to-crankshaft clearance 0.025-0.065 mm (0.0009-0.0025 in) Connecting rod side clearance 1.0 mm (0.039 in) [/QUOTE]
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