Crankshaft, Main & Connecting Rod Bearings

1998 Lexus SC 300SECTION Crankshaft, Main & Connecting Rod Bearings
CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

Application In. (mm)
Crankshaft
End Play
Standard .0008-.0087 (.020-.220)
Wear Limit .0118 (.300)
Runout .0024 (.060)
Main Bearings
Journal Diameter (1)
Size Mark "0" 2.44086-2.44094 (61.9980-62.0000)
Size Mark "1" 2.44078-2.44086 (61.9960-61.9980)
Size Mark "2" 2.44070-2.44078 (61.9940-61.9960)
Size Mark "3" 2.44063-2.44070 (61.9920-61.9940)
Size Mark "4" 2.44055-2.44063 (61.9900-61.9920)
Size Mark "5" 2.44047-2.44055 (61.9880-61.9900)
Size Mark "6" 2.44039-2.44047 (61.9860-61.9880)
Size Mark "7" 2.44031-2.44039 (61.9840-61.9860)
Journal Out-Of-Round .0008 (.020)
Journal Taper .0008 (.020)
Oil Clearance
Standard Crankshaft
Standard .0010-.0016 (.025-.040)
Wear Limit .0024 (.060)
.010" (.25 mm) Undersize Crankshaft
Standard .0010-.0024 (.025-.060)
Wear Limit .0031 (.080)
Crankpin
Journal Diameter (2)
Size Mark "0" 2.0470-2.0472 (51.994-52.000)
Size Mark "1" 2.0468-2.0470 (51.988-51.994)
Size Mark "2" 2.0465-2.0468 (51.982-51.988)
Journal Out-Of-Round .0008 (.020)
Journal Taper .0008 (.020)
Oil Clearance
Standard Crankshaft
Standard .0009-.0016 (.023-.041)
Wear Limit .0027 (.070)
.010" (.25 mm) Undersize Crankshaft
Standard .0011-.0026 (.028-.066)
Wear Limit .0031 (.080)
(1) Main bearing journal diameter is determined by size mark stamped on crankshaft. See Figure.
(2) Rod journal diameter is determined by size mark stamped on crankshaft. See Figure.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

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