Difference between revisions of "Engine Specs - S54 Rod Bolts"
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# 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 30-Nm, then using a torque-angle gauge tighten another 105-degrees. | # Torque to 30-Nm, then using a torque-angle gauge tighten another 105-degrees. | ||
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# Repeat steps 1, 2. | # Repeat steps 1, 2. | ||
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Latest revision as of 21:52, 2 December 2016
Contents
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.
- Lubricate rod bolt threads and connecting rod cap bore holes with appropriate thread lubricant.
- Torque to 30-Nm, then using a torque-angle gauge tighten another 70-degrees.
- Remove bolts.
- Repeat steps 1, 2.
OEM Rod Bolts (M10 x 1.25, E12 Torx bolt head)
SPEC: OEM: Torque procedure
| Torque | Angle |
|---|---|
| 30 Nm | 105 degrees |
| Release bolts | |
| 30 Nm | 105 degrees |
| Release bolts | |
| 30 Nm | 105 degrees |
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.
- Torque to 30-Nm, then using a torque-angle gauge tighten another 105-degrees.
- Release bolts.
- Repeat steps 1-3
- Repeat steps 1, 2.
