Ford Workshop Service and Repair Manuals

Crankshaft: Specifications

GENERAL SPECIFICATIONS 

Main Bearing Journal Diameter

Standard ......................................................................................................................................................  79.139-79.340 mm (3.1228-3.1236 inch)
0.010 Undersize ..........................................................................................................................................  79.065-79.085 mm (3.1128-3.1136 inch)
0.020 Undersize ..........................................................................................................................................  78.811-78.831 mm (3.1028-3.1036 inch)
0.030 Undersize ..........................................................................................................................................  78.577-78.577 mm (3.0928-3.0936 inch)

Main Bearing Journal Out-of-Round Maximum

Standard ............................................................................................................................................................................  0.0056 mm (0.00022 inch) 
0.010 Undersize ................................................................................................................................................................  0.0056 mm (0.00022 inch) 
0.020 Undersize ................................................................................................................................................................  0.0056 mm (0.00022 inch) 
0.030 Undersize ................................................................................................................................................................  0.0056 mm (0.00022 inch) 

Main Bearing Thrust Face Runout TIR Maximum

Standard ...................................................................................................................................................................................  0.025 mm (0.001 inch)
0.010 Undersize .......................................................................................................................................................................  0.025 mm (0.001 inch)
0.020 Undersize .......................................................................................................................................................................  0.025 mm (0.001 inch)
0.030 Undersize .......................................................................................................................................................................  0.025 mm (0.001 inch)

Main Bearing Journal Taper Maximum per inch

Standard .............................................................................................................................................................................  0.0038 mm (0.00015 inch)
0.010 Undersize .................................................................................................................................................................  0.0038 mm (0.00015 inch)
0.020 Undersize .................................................................................................................................................................  0.0038 mm (0.00015 inch)
0.030 Undersize .................................................................................................................................................................  0.0038 mm (0.00015 inch)

Thrust Bearing Journal Width

Standard ......................................................................................................................................................  31.509-31.585 mm (1.2405-1.2435 inch)
0.010 Undersize ..........................................................................................................................................  31.509-31.585 mm (1.2405-1.2435 inch)
0.020 Undersize ..........................................................................................................................................  31.509-31.585 mm (1.2405-1.2435 inch)
0.030 Undersize ..........................................................................................................................................  31.509-31.585 mm (1.2405-1.2435 inch)

Main and Rod Bearing Journal Finish RMS Maximum

Standard ...................................................................................................................................................................................................................  10
0.010 Undersize .......................................................................................................................................................................................................  10
0.020 Undersize .......................................................................................................................................................................................................  10
0.030 Undersize .......................................................................................................................................................................................................  10

Main Bearing Thrust Face Finish RMS Maximum

Standard ...................................................................................................................................................................................................................  20
0.010 Undersize .......................................................................................................................................................................................................  20
0.020 Undersize .......................................................................................................................................................................................................  20
0.030 Undersize .......................................................................................................................................................................................................  20

Connecting Rod Journal Diameter

Standard .....................................................................................................................................................  63.45-63.47 mm (2.4980-2.4990 inch) (a)
0.010 Undersize ..................................................................................................................................................  63.20-63.22 mm (2.488-2.489 inch)
0.020 Undersize ..................................................................................................................................................  62.94-62.96 mm (2.478-2.479 inch)
0.030 Undersize ..................................................................................................................................................  62.69-62.71 mm (2.468-2.469 inch)

Connecting Rod Journal Taper per Inch Maximum

Standard .............................................................................................................................................................................  0.0066 mm (0.00026 inch)
0.010 Undersize .................................................................................................................................................................  0.0066 mm (0.00026 inch)
0.020 Undersize .................................................................................................................................................................  0.0066 mm (0.00026 inch)
0.030 Undersize .................................................................................................................................................................  0.0066 mm (0.00026 inch)

Crankshaft End Play

Standard .....................................................................................................................................................  0.063-0.216 mm (0.0025-0.0085 inch) (b)
0.010 Undersize ..............................................................................................................................................  0.063-0.216 mm (0.0025-0.0085 inch)
0.020 Undersize ..............................................................................................................................................  0.063-0.216 mm (0.0025-0.0085 inch)
0.030 Undersize ..............................................................................................................................................  0.063-0.216 mm (0.0025-0.0085 inch)

a

Maximum out-of-round - 0.0056 mm (0.00022 inch)

b

Service limit - 0.51 mm (0.020 inch)