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 SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYSYSTEM SPECIFICATIONSDESIGN SPECIFICATIONS
2005 Honda Civic Si L4-2.0L
Design Specifications
2005 Honda Civic Si L4-2.0LSECTION Design Specifications
Engine
Type Water cooled, 4-stroke DOHC VTEC engine
Cylinder arrangement Inline 4-cylinder, transverse
Bore and stroke 86 x 86 mm (3.39 x 3.39 inch)
Displacement 1,998 cm3 (122 cu inch)
Compression ratio 9.8
Valve train Chain drive, DOHC VTEC 4 valves per cylinder
Lubrication system Forced, wet sump, with trochoid pump
Oil pump displacement
At 6,000 engine rpm 54.3 L (57.4 US qt)/minute
Water pump displacement
At 3,400 engine rpm 82 L (87 US qt)/minute
Fuel required UNLEADED gasoline with 86 pump octane number or higher
Type Water cooled, 4-stroke DOHC VTEC engine
Cylinder arrangement Inline 4-cylinder, transverse
Bore and stroke 86 x 86 mm (3.39 x 3.39 inch)
Displacement 1,998 cm3 (122 cu inch)
Compression ratio 9.8
Valve train Chain drive, DOHC VTEC 4 valves per cylinder
Lubrication system Forced, wet sump, with trochoid pump
Oil pump displacement
At 6,000 engine rpm 54.3 L (57.4 US qt)/minute
Water pump displacement
At 3,400 engine rpm 82 L (87 US qt)/minute
Fuel required UNLEADED gasoline with 86 pump octane number or higher
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:
- • 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.