Crankshaft

1999 Ford Taurus V8-3.4L VIN N SHOSECTION Crankshaft
Main Bearing Journal Diameter 2.4794 - 2.4803 Inch (in)
Out of Round Limit 0.0008 Inch (in)
Total Taper Limit 0.0008 Inch (in)
Journal Runout Limit 0.0024 Inch (in)
Connecting Rod Journal Diameter 11.9685.9675 - Inch (in)
Out of Round Limit 0.0008 Inch (in)
Total Taper Limit 0.00008 Inch (in)
Crankshaft Free End Play 0.0024 - 0.0103 Inch (in)
Main Bearings Clearance to Crankshaft Desired 0.0004 - 0.0012 Inch (in)
Allowable 0.0024 Inch (in)
Main Bearing Wall Thickness Grade 1 0.0981-0.0982 Inch (in)
Grade 2 0.0982-0.0983 Inch (in)
Grade 3 0.0983-0.0984 Inch (in)
Grade 4 0.0984-0.0986 Inch (in)
Grade 5 0.985-0.0987 Inch (in)
Grade 6 0.0987-0.0988 Inch (in)
Thrust Bearing Thickness 0.0869-0.0889 Inch (in)
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.