Difference between revisions of "Engine Specs - S54 Rod Bolts"

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(SPEC: OEM: Torque procedure)
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|30 Nm
 
|30 Nm
 
|70 degrees
 
|70 degrees
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|
 
 
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Make sure you are starting with new rod bolts.  Factory rod bolts must be replaced once used.
 
Make sure you are starting with new rod bolts.  Factory rod bolts must be replaced once used.
 
# Lubricate rod bolt threads and connecting rod cap bore holes with appropriate thread lubricant.
 
# Lubricate rod bolt threads and connecting rod cap bore holes with appropriate thread lubricant.
# Torque to 20-Nm, then using a torque-angle gauge tighten another 130-degrees.
+
# Torque to 30-Nm, then using a torque-angle gauge tighten another 70-degrees.
 
# Remove bolts.
 
# Remove bolts.
# Repeat steps 1-3
 
 
# Repeat steps 1, 2.
 
# Repeat steps 1, 2.
 
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Revision as of 20:33, 30 January 2016


Rod Bolt Comparisons

The S54 has two different types of connecting rod bolts. The torque procedure for each is different.

  • Type-1: M11 x 1.25 mm thread pitch. 12 mm bi-hexagonal bolt head.
  • Type-2: M10 x 1.25 mm thread pitch. E12 Torx bolt head.

OEM Rod Bolts (M11 x 1.25, 12mm bi-hex bolt head)

SPEC: OEM: Torque procedure

Torque Angle
30 Nm 70 degrees
Remove bearing cap  
30 Nm 70 degrees


Make sure you are starting with new rod bolts.  Factory rod bolts must be replaced once used.

  1. Lubricate rod bolt threads and connecting rod cap bore holes with appropriate thread lubricant.
  2. Torque to 30-Nm, then using a torque-angle gauge tighten another 70-degrees.
  3. Remove bolts.
  4. Repeat steps 1, 2.

SPEC: OEM: Clamping Force

  • Clamping Force: Approximately 11000 pounds force.