vehicle-specs.md

2009 Honda Civic SI Coupe (FG2) — Vehicle Specifications

Stock specs for my car. I put this together as a quick reference since I'm constantly looking up bolt sizes, torque specs, and dimensions when planning mods.

General

Spec	Value
Year	2009
Make / Model	Honda Civic SI
Trim	SI (top performance trim)
Body Style	Coupe (2-door)
Generation	8th Gen (2006-2011)
Chassis Code	FG2
Production	East Liberty Auto Plant, Ohio

Engine

Spec	Value
Engine Code	K20Z3
Type	2.0L DOHC i-VTEC Inline-4
Displacement	1998cc
Bore x Stroke	86mm x 86mm
Compression Ratio	11.0:1
Horsepower	197 HP @ 7800 RPM
Torque	139 lb-ft @ 6200 RPM
Redline	8000 RPM (fuel cut at 8200 RPM)
VTEC Crossover	~5800 RPM (stock)
Fuel System	Sequential multi-port fuel injection
Fuel Requirement	Premium unleaded 91+ octane
Engine Management	Keihin PRB ECU
Emissions	ULEV-2

Transmission

Spec	Value
Type	6-speed manual
Transmission Code	K20Z3 close-ratio 6MT
Final Drive	4.764:1
LSD	Helical limited-slip differential (front)

Brakes (Stock)

Spec	Front	Rear
Type	Ventilated disc	Solid disc
Diameter	11.8" (300mm)	10.2" (260mm)
Caliper	Single-piston sliding	Single-piston sliding

Suspension (Stock)

Spec	Front	Rear
Type	MacPherson strut	Multi-link
Anti-roll bar	Yes	Yes

Dimensions

Spec	Value
Wheelbase	104.3"
Length	175.4"
Width	68.9"
Height	54.7"
Curb Weight	~2,877 lbs
Weight Distribution	~61/39 F/R

Electrical

Spec	Value
Battery	12V, Group 51R
Alternator	~130A
OBD2 Port	Under dash, left of steering column
Interior Fuse Box	Driver side lower dash, mini blade fuses
Engine Bay Fuse Box	Near battery, standard blade fuses

Exhaust (Stock)

Spec	Value
Header	Cast iron log-style manifold
Catalytic Converter	Close-coupled to header
Pipe Diameter (cat-back)	2.36" (60mm)
Resonator	Yes (mid-pipe)
Muffler	Single oval canister, rear
Tailpipe Exit	Single, driver side