Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA2005CIVIC SI L4-2.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINESYSTEM SPECIFICATIONSTORQUE SPECIFICATIONS
2005 Honda Civic Si L4-2.0L
Torque Specifications
2005 Honda Civic Si L4-2.0LSECTION Torque Specifications
Cylinder Head Bolts
Measure the diameter of each cylinder head bolt at point A and point B.
If either diameter is less than 10.6 mm (0.42 inch), replace the cylinder head bolt.
Tighten the cylinder head bolts in sequence to 39 Nm (4.0 kgf-cm, 29 ft. lbs.).
After torquing, tighten all cylinder head bolts in two steps (90° per step).
If you are using a new cylinder head bolt, tighten the bolt an extra 90°.
Intake Manifold
Tighten all intake manifold mounting bolts/nuts in a crisscross pattern in two or three steps, beginning with the inner bolt.
Rocker Arm Assembly Torque and Sequence
Tighten the bolts to the specified torque.
Specified torque:
8 mm bolts: 22 Nm (2.2 kgf-cm, 16 ft. lbs.)
6 mm bolts: 12 Nm (1.2 kgf-cm, 8.7 ft. lbs.)
6mm bolts: (21), (22), (23)
Main Bearing Torque Sequence
Tighten the bearing cap bolts in sequence to 29 Nm (3.0 kgf-cm, 22 ft. lbs.).
Tighten the bearing cap bolts an additional 56°.
Tighten the 8 mm bolts in sequence to 22 Nm (2.2 kgf-cm, 16 ft. lbs.).
Connecting Rods
Point A-Point B = Difference in Diameter
Difference in Diameter:
Specification: 0 - 0.1 mm (0 - 0.004 inch)
Apply engine oil to the threads of the connecting rod bolts.
Tighten the connecting rod bolts to 20 Nm (2.0 kgf-cm, 14 ft. lbs.).
Tighten the connecting rod bolts an additional 90°.
Crankshaft Pulley
Crankshaft Pully Bolt to 245 Nm (25,0 kgf.m, 181 lbf.ft.)
Flywheel M/T
Install the special tool, then torque the flywheel mounting bolts in a crisscross pattern in several steps.
Oil Pump
Exploded View
Exhaust Manifold and Shield
Tighten the bolts/nuts in a crisscross pattern in two or three steps, beginning with the inner bolt.
Water Pump
The six bolts securing the water pump.
Measure the diameter of each cylinder head bolt at point A and point B.
If either diameter is less than 10.6 mm (0.42 inch), replace the cylinder head bolt.
Tighten the cylinder head bolts in sequence to 39 Nm (4.0 kgf-cm, 29 ft. lbs.).
After torquing, tighten all cylinder head bolts in two steps (90° per step).
If you are using a new cylinder head bolt, tighten the bolt an extra 90°.
Intake Manifold
Tighten all intake manifold mounting bolts/nuts in a crisscross pattern in two or three steps, beginning with the inner bolt.
Rocker Arm Assembly Torque and Sequence
Tighten the bolts to the specified torque.
Specified torque:
8 mm bolts: 22 Nm (2.2 kgf-cm, 16 ft. lbs.)
6 mm bolts: 12 Nm (1.2 kgf-cm, 8.7 ft. lbs.)
6mm bolts: (21), (22), (23)
Main Bearing Torque Sequence
Tighten the bearing cap bolts in sequence to 29 Nm (3.0 kgf-cm, 22 ft. lbs.).
Tighten the bearing cap bolts an additional 56°.
Tighten the 8 mm bolts in sequence to 22 Nm (2.2 kgf-cm, 16 ft. lbs.).
Connecting Rods
Point A-Point B = Difference in Diameter
Difference in Diameter:
Specification: 0 - 0.1 mm (0 - 0.004 inch)
Apply engine oil to the threads of the connecting rod bolts.
Tighten the connecting rod bolts to 20 Nm (2.0 kgf-cm, 14 ft. lbs.).
Tighten the connecting rod bolts an additional 90°.
Crankshaft Pulley
Crankshaft Pully Bolt to 245 Nm (25,0 kgf.m, 181 lbf.ft.)
Flywheel M/T
Install the special tool, then torque the flywheel mounting bolts in a crisscross pattern in several steps.
Oil Pump
Exploded View
Exhaust Manifold and Shield
Tighten the bolts/nuts in a crisscross pattern in two or three steps, beginning with the inner bolt.
Water Pump
The six bolts securing the water pump.
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.