🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX Years Covered: 1993, 1994, 1995, 1996 Codes Chassis Codes: GC8, GF8 👋 Introduction Market Position Segment: Compact Performance Sedan/Wagon Target Audience: Enthusiast owners, performance tuners, professional mechanics specializing in Subaru vehicles. Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Ford Escort RS Cosworth, Toyota Celica GT-Four. Key Features Performance Focus: Designed for the rally-bred WRX variant, emphasizing performance tuning, maintenance, and repair specific to its turbocharged engine and AWD system. All Wheel Drive: Detailed information on the Subaru Symmetrical All-Wheel Drive system and its mechanical components. 📋 Manual Details Coverage Areas Primary Coverage: Workshop Service Repair Page Count Estimated Page Count: 1500+ Manual Type Type: Comprehensive Service Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, overhaul procedures, fuel injection, ignition systems, emissions control, cooling system, lubrication system, turbocharger system. Transmission: Manual transmission (5-speed) overhaul, clutch system, drivetrain, limited-slip differentials (front and rear). Brakes: Hydraulic system, ABS (Anti-lock Braking System) troubleshooting and repair, brake pad/rotor replacement, caliper overhaul. Suspension Steering: Front and rear suspension geometry, struts, coil springs, bushings, power steering system, wheel alignment specifications. Electrical: Wiring diagrams, starter, alternator, battery, lighting systems, instrument cluster, ECU (Engine Control Unit) diagnostics, body electrical. Body Chassis: Body panel removal and installation, interior trim, HVAC (Heating, Ventilation, and Air Conditioning) system, chassis specifications, rust prevention. Procedures Included Maintenance: Routine maintenance tasks, oil changes, filter replacements, fluid checks, spark plug replacement, timing belt replacement procedure. Diagnostics: Troubleshooting charts, symptom-based diagnostics, OBD-I (On-Board Diagnostics) codes interpretation and clearing. Repair: Component-level repair, engine rebuild steps, transmission rebuild steps, suspension component replacement, bodywork repairs. Installation: Accessory installation guides, performance upgrade installation considerations. Technical Depth Depth: Comprehensive: Covers everything from basic maintenance to full engine and transmission rebuilds, including detailed electrical schematics and diagnostic procedures. 📊 Manual Specifications File Format File Type: Digital PDF Searchability: Fully searchable text for quick information retrieval. Print Quality Print Quality: High-resolution, suitable for printing individual pages or the entire manual. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: EJ20G Engine Type: 2.0L Flat-4 Turbocharged DOHC Performance Horsepower: Approx. 237 hp (177 kW) @ 6000 rpm (JDM spec) Torque: Approx. 244 lb-ft (330 Nm) @ 4800 rpm (JDM spec) Bore X Stroke: 92.0 mm x 75.0 mm Compression Ratio: 8.0:1 Fuel System Induction: Sequential multi-point fuel injection (MPI) with Garrett turbocharger Fuel Type: Unleaded gasoline, Octane rating 95 RON (recommended) 🔧 Transmission Standard Type: 5-speed Manual Transmission (TY753VW1AA / TY753VW2AA) Optional Type: None offered for WRX models Features Drive System: Symmetrical All-Wheel Drive with viscous center differential and rear helical limited-slip differential. Gear Ratios: Detailed gear ratios for all 5 speeds and reverse are included in the manual. 📐 Dimensions Exterior Length: 4,350 mm (Sedan), 4,385 mm (Wagon) Width: 1,700 mm Height: 1,440 mm (Sedan), 1,420 mm (Wagon) Wheelbase: 2,520 mm Weights Curb Weight: Approx. 1,270 kg (Sedan), 1,320 kg (Wagon) 🛡️ Safety Features Ratings Crash Test Results: Limited official testing for this specific era and performance variant. Manual focuses on mechanical safety systems. Active Features ABS: Standard Anti-lock Braking System (ABS) on WRX models, with detailed diagnostic procedures. AWD: Symmetrical All-Wheel Drive system enhances traction and stability. Passive Features Airbags: Driver's airbag standard. Seatbelts: Three-point front and rear seatbelts. 💡 Technology Features Infotainment Audio System: Factory fitted radio/cassette player. Manual covers removal, installation, and basic troubleshooting of the electrical components. Driver Assistance Traction Control: No advanced driver-assistance systems (ADAS) typical of modern vehicles. Focus is on mechanical grip of AWD. 🔧 Maintenance Service Intervals Oil Change: Every 5,000 km or 6 months, whichever comes first. Air Filter: Inspect every 10,000 km, replace as needed. Spark Plugs: Replace every 30,000 km (platinum plugs). Timing Belt: Replace every 90,000 km or 6 years, whichever comes first. Fluid Specifications Engine Oil: API SG or SH, SAE 10W-30 or 5W-30 (depending on climate). Capacity: 4.2 L with filter. Coolant: Subaru Genuine Coolant (Blue) or equivalent P-HOAT coolant. 50/50 mix with distilled water. Capacity: 7.3 L. Transmission Fluid: API GL-5, SAE 75W-90 Gear Oil. Capacity: 3.5 L. Differential Fluid: API GL-5, SAE 90 Gear Oil. Front Capacity: 1.3 L, Rear Capacity: 1.0 L. Known Issues Head Gaskets: While less common on EJ20G than later EJ25, manual provides detailed procedures for inspection and replacement. Turbo Wear: Manual includes procedures for turbocharger inspection, maintenance, and replacement due to potential wear from spirited driving. Oil Leaks: Common areas for oil leaks (e.g., cam seals, crank seals) are detailed with repair procedures. 📚 Vehicle History Brand Heritage Subaru Legacy: The Impreza WRX builds upon Subaru's rally heritage established by the Legacy RS. Model Evolution Gc Gf Generation: This manual covers the first generation (GC/GF) Impreza, specifically the high-performance WRX variant. Production Launch Year: 1992...