General Specifications
WARNING: This page is about a different car, the 2012 Ford F550 Super Duty and 2012 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
GENERAL SPECIFICATIONS (6.8L, 3V)
| Item | Specification | ||
|---|---|---|---|
| Engine | |||
| Bore/Stroke | 90.215/105.8 mm (3.5518/4.1654 in) | ||
| Displacement (CID) | 6.8L (415) | ||
| Engine weight (without accessory drive components and with flexplate) | 286 kg (630 lb) | ||
| Engine weight (without accessory drive components and with flywheel) | 292 kg (644 lb) | ||
| Fire order | 1-6-5-10-2-7-3-8-4-9 | ||
| Spark plug | HJFS-24FP | ||
| No. of Cylinders | 10 | ||
| Oil pressure 93.33°C (200°F) @ 2, 000 rpm | 276-517 kPa (40-75 psi) | ||
| Cylinder Head and Valve Train | |||
| Combustion chamber volume | 48.1-51.1 cc (2.92-3.12 cu in) |
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| Roller follower ratio | - | ||
| Valve arrangement (front to rear) - LH | I-E-I-I-E-I-I-E-I-I-E-I-I-E-I | ||
| Valve arrangement (front to rear) - RH | I-E-I-I-E-I-I-E-I-I-E-I-I-E-I | ||
| Valve face runout | 0.05 mm (0.002 in) | ||
| Valve face angle | 45.5 degrees | ||
| Valve guide bore diameter | 6.015-6.044 mm (0.237-0.238 in) | ||
| Valve head diameter - intake | 33.62-33.98 mm (1.324-1.338 in) | ||
| Valve head diameter - exhaust | 37.32-37.68 mm (1.469-1.483 in) | ||
| Valve seat width - intake | 1.2-1.4 mm (0.047-0.055 in) |
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| Valve seat width - exhaust | 1.4-1.6 mm (0.055-0.063 in) |
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| Valve seat angle | 44.5-45.0 degrees | ||
| Valve spring free length | 56.5 mm (2.22 in) | ||
| Valve spring compression pressure | 760 N (79 lb) ± 17.5 N (171 lb) @ 42.04 mm (1.66 in) |
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| Valve spring installed height | 42.04 mm (1.66 in) | ||
| Valve spring installed pressure | 350 N (79 lb) ± 17.5 N (4 lb) @ 42.04 mm (1.66 in) |
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| Valve stem diameter - intake | 5.975-5.995 mm (0.235-0.236 in) | ||
| Valve stem diameter - exhaust | 5.95-5.97 mm (0.234-0.235 in) | ||
| Valve stem-to-guide clearance - intake | 0.020-0.069 mm (0.001-0.003 in) | ||
| Valve stem-to-guide clearance - exhaust | 0.045-0.094 mm (0.002-0.004 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 | ||
| Hydraulic Lash Adjuster | |||
| Clearance-to-bore | - | ||
| Collapsed lash adjuster gap | - | ||
| Diameter | - | ||
| Hydraulic leakdown rate | - | ||
| Service limit | - | ||
| Camshaft | |||
| Allowable lobe lift loss | 0.127 mm (0.005 in) | ||
| Camshaft journal bore inside diameter | 28.657-28.682 mm (1.128-1.129 in) | ||
| Camshaft journal-to- bearing clearance | 0.024-0.075 mm (0.0009-0.0029 in) | ||
| End play | 0.027-0.190 mm (0.001-0.007 in) | ||
| Journal diameter | 28.607-28.633 mm (1.126-1.127 in) | ||
| Lobe lift - intake | 5.475 mm (0.216 in) | ||
| Lobe lift - exhaust | 5.520 mm (0.217 in) | ||
| Runout | 0.09 mm (0.004 in) | ||
| Theoretical valve lift @ 0 lash - intake | 11.1 mm (0.437 in) | ||
| Theoretical valve lift @ 0 lash - exhaust | 11.0 mm (0.433 in) | ||
| Cylinder Block | |||
| Cylinder bore diameter - grade 1 | 90.200-90.210 mm (3.5512-3.5516 in) | ||
| Cylinder bore diameter - grade 2 | 90.210-90.220 mm (3.5516-3.5520 in) | ||
| Cylinder bore diameter - grade 3 | 90.220-90.230 mm (3.5520-3.5524 in) | ||
| Cylinder bore maximum taper | 0.013 mm (0.0005 in) | ||
| Cylinder bore maximum out-of-round | 0.010 mm (0.0004 in) | ||
| Main bearing bore inside diameter | 72.400-72.424 mm (2.850-2.851 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; 0.15 mm (0.006 in) overall | ||
| Crankshaft | |||
| Connecting rod journal diameter | 52.983-53.003 mm (2.0859-2.0867 in) | ||
| Connecting rod journal maximum taper | 0.004 mm (0.0002 in) | ||
| Connecting rod journal maximum out-of-round | 0.0075 mm (0.0003 in) between cross sections | ||
| Crankshaft maximum end play | 0.075-0.377 mm (0.0030-0.0148 in) | ||
| Main bearing journal diameter | 67.481-67.505 mm (2.6568-2.6576 in) | ||
| Main bearing journal maximum out-of-round | 0.0075 mm (0.0003 in) between cross sections | ||
| Main bearing journal maximum taper | 0.004 mm (0.0002 in) | ||
| Main bearing journal-to-cylinder block clearance | 0.024-0.048 mm (0.0009-0.0019 in) | ||
| Piston and Connecting Rod | |||
| Connecting rod bearing bore diameter (with assembled liners) | 53.027-53.049 mm (2.0877-2.0885 in) | ||
| Connecting rod bearing-to-crankshaft clearance | 0.024-0.066 mm (0.0009-0.0025 in) | ||
| Connecting rod length (center-to-center) | 169.1 mm (6.6575 in) | ||
| Connecting rod maximum allowed bend | ± 0.038 mm (0.0015 in) | ||
| Connecting rod-to-pin clearance | 0.009-0.0235 mm (0.0004-0.0093 in) | ||
| Connecting rod pin bore diameter | 22.012-22.024 mm (0.8666-0.8671 in) | ||
| Connecting rod maximum allowed twist a | ± 0.05 mm (0.0020 in) | ||
| Connecting rod side clearance | 0.125-0.475 mm (0.0049-0.0187 in) | ||
| Piston-to-cylinder bore clearance (at grade size) | 0.025-0.045 mm (0.0010-0.0018 in) | ||
| Piston diameter - grade 1 (at right angle to pin bore) | 90.165-90.175 mm (3.5498-3.5502 in) | ||
| Piston diameter - grade 2 (at right angle to pin bore) | 90.175-90.185 mm (3.5502-3.5506 in) | ||
| Piston diameter - grade 3 (at right angle to pin bore) | 90.185-90.195 mm (3.5506-3.5510 in) | ||
| Piston pin bore diameter | 22.008-22.014 mm (0.8665-0.8667 in) | ||
| Piston pin diameter | 22.0005-22.0030 mm (0.8662-0.8663 in) | ||
| Piston pin length | 61.8 mm (2.433 in) | ||
| Piston pin-to-piston fit | 0.005-0.013 mm (0.0002-0.0005 in) | ||
| Piston ring end gap - top | 0.15-0.30 mm (0.0059-0.0118 in) | ||
| Piston ring end gap - intermediate | 0.25-0.50 mm (0.0098-0.0196 in) | ||
| Piston ring end gap - oil control | 0.15-0.65 mm (0.0059-0.0256 in) | ||
| Piston ring groove width - top | 1.502-1.505 mm (0.0591-0.0592 in) | ||
| Piston ring groove width - intermediate | 1.52-1.54 mm (0.0598-0.0606 in) | ||
| Piston ring groove width - oil control | 3.030-3.050 mm (0.1193-0.1201 in) | ||
| Piston ring width | 1.46-1.49 mm (0.0575-0.0587 in) | ||
| Piston ring-to-groove clearance - top | 0.030-0.050 mm (0.0012-0.0020 in) | ||
| Piston ring-to-groove clearance - intermediate | 0.030-0.080 mm (0.0012-0.0031 in) | ||
| Balance Shaft System | |||
| Alignment | |||
| Balance shaft end play | 0.04 - 0.18 mm (0.0016-0.00709 in) | ||
| Balance shaft journal diameter | 26.936-26.962 mm (1.0605-1.0615 in) | ||
| Bore-to-bore max. bend | ± 0.038 mm (± 0.00149 in) |
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| Bore-to-bore max. twist | ± 0.05 mm (± 0.00196 in) | ||
| Clearance - balance shaft journal-to-cylinder head | 0.025-0.076 mm (0.0010-0.0030 in) | ||
| Cylinder head balance shaft journal diameter | 26.987-27.012 mm (1.0625-1.0635 in) | ||
| Gear backlash | 0.0076 - 0.1295 mm (0.00030-0.00510 in) | ||
| Max. play | 0.670 mm (0.264 in) | ||
| Rod length (centerline bore-to-bore) | 169.1 mm (6.6574 in) | ||
| Side play (as assembled to crank) Standard play |
0.26 ± 0.410 mm (0.01024 ± 0.01614 in) | ||
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