Vehicle Segment:
Performance Compact Sedan/Wagon (WRC homologation special).
Target Audience:
Enthusiasts, performance drivers, rally fans, and owners seeking in-depth maintenance knowledge.
Key Competitors:
Mitsubishi Lancer Evolution, Ford Focus RS, Honda Civic Type R (in certain markets).
Performance Focus:
Symmetrical All-Wheel Drive, turbocharged engine, rally-bred performance heritage.
Manual Value Proposition:
Provides critical, manufacturer-approved repair and maintenance procedures for a sought-after performance vehicle.
Engine:
Detailed coverage of the EJ207 engine (2.0L DOHC Turbocharged Boxer), including assembly, disassembly, tuning, and diagnostics.
Transmission:
Information on the Subaru 6-speed manual transmission (TY757VW2AA for STi), including clutch, drivetrain, differentials, and AWD system (VDC).
Brakes:
Hydraulic brake system with ABS and potential brake bias controls, including component inspection, bleeding procedures, and master cylinder.
Suspension:
Front and rear suspension geometry, shock absorbers, springs, control arms, anti-roll bars, and alignment procedures.
Electrical:
Full electrical schematics, wiring diagrams, fuse box layouts, lighting, instrumentation, power windows, and ECU control systems.
Body And Interior:
Body panel repair, chassis data, interior trim removal, seating adjustments, and HVAC system.
Fuel And Emissions:
Fuel injection system, fuel pump, injectors, evaporative emissions control, and catalytic converter.
Cooling System:
Radiator, thermostat, water pump, cooling fan operation, and coolant specifications.
Lubrication System:
Oil pump, oil filter (e.g., Subaru 15208AA080), oil pan, lubrication passages, and oil specifications.
Maintenance Tasks:
Oil changes, filter replacements, spark plug replacement, fluid checks, belt inspections/replacements.
Diagnostic Procedures:
Troubleshooting charts, DTC (Diagnostic Trouble Code) interpretation, symptom-based diagnostics.
Repair Procedures:
Engine rebuilds, transmission overhaul, brake caliper replacement, suspension component renewal, electrical component repair.
Calibration And Adjustment:
Wheel alignment, idle speed adjustment, clutch free play adjustment, VDC calibration (if applicable).
Special Tools:
Listing of Subaru-specific tools and general automotive tools required for repairs.
Diagnostic Level:
Advanced, covering ECU diagnostic protocols, sensor data interpretation, and fault code analysis.
Rebuild Capability:
Complete engine and transmission overhaul procedures, including torque specifications, clearances, and assembly sequences.
Electrical Schematics Detail:
High-resolution, detailed wiring diagrams for all vehicle systems, enabling complex electrical diagnosis.
Engine Type:
2.0L Flat-4 (Boxer), DOHC, 16-valve, Twin-Scroll Turbocharged
Horsepower Jdm:
280 PS (276 hp) @ 6,000 rpm (DIN, often underestimated for export markets)
Torque Jdm:
333 Nm (246 lb-ft) @ 4,000 rpm (DIN)
Fuel Delivery:
Multi-point Fuel Injection (MPI)
Fuel Type:
Premium Unleaded Gasoline (95 RON or higher recommended)
Coolant Capacity:
Approximately 7.0 Liters (with manual specified coolant type)
Oil Capacity:
Approximately 4.5 Liters (with filter change)
Recommended Oil Viscosity:
5W-30 or 10W-30 (check manual for specific climate/application)
Oil Change Interval:
5,000 miles or 6 months (whichever comes first) for severe driving conditions, potentially 7,500 miles for normal use as per manual recommendations.
Spark Plug Replacement:
Approximately 30,000-60,000 miles, depending on plug type and usage (refer to manual for specifics).
Timing Belt Replacement:
Recommended every 60,000-100,000 miles or 5-7 years (critical maintenance item for EJ engines). Includes idler pulleys and tensioner.
Brake Fluid Type:
DOT 3 or DOT 4 (manual specification is critical)
Coolant Specifications:
Subaru Super Coolant (Blue) or equivalent long-life coolant (50/50 mix).
Piston Ring Land Failure:
Commonly cited issue in high-mileage or heavily modified EJ207 engines. Manual covers inspection and replacement.
Turbocharger Wear:
Twin-scroll turbo can experience wear; manual details inspection and lubrication procedures.
Clutch Wear:
High-performance clutch can wear faster with aggressive driving; manual provides replacement procedures.
Subaru Motorsport:
Subaru's deep roots in WRC (World Rally Championship) and its success with the Impreza platform.
Gc8 To Gd:
Transition from the 1st generation (GC/GF) to the 2nd generation (GD/GG) 'Blobeye'/'Hawkeye' era, featuring a significant styling and chassis update.
Ej207 Significance:
The EJ207 was the legendary engine for the JDM STi, known for its twin-scroll turbo, forged internals, and tuning potential.
Production Period:
2000-2007 for the GD/GG generation, with 2001-2002 being the early 'Blobeye' STi variants.
Manufacturing Location:
Japan
