Subaru Impreza WRX 1997 1998 Workshop Service Repair Manual

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🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX Generation: GC8 Codes Chassis Code: GC8 Engine Code Common: EJ20G, EJ20K 👋 Introduction Market Position Segment: Compact performance sedan/coupe rally homologation...

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标签: 1997 1998 Car Cars Impreza WRX Misc Subaru

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Impreza WRX

Generation:

Codes

Chassis Code:

Engine Code Common:

EJ20G, EJ20K

👋 Introduction

Market Position

Segment:

Compact performance sedan/coupe rally homologation special

Target Audience:

Enthusiasts, rally fans, performance car owners, mechanics specializing in JDM vehicles

Competitive Analysis

Key Rivals:

Mitsubishi Lancer Evolution, Ford Escort RS Cosworth, Toyota Celica GT-Four

Key Features

Performance Highlights:

Symmetrical All-Wheel Drive, turbocharged Boxer engine, rally-bred chassis tuning

Manual Value Proposition:

Essential for maintaining and repairing a classic performance Subaru, crucial for preserving value and optimizing performance

📋 Manual Details

Coverage Areas

Market Region:

Global (primarily Japan, Europe, Australia)

Languages:

English (likely translated from Japanese factory originals)

Page Count

Estimated Pages:

1000+

Manual Type

Type:

Workshop Service Repair Manual

Format

Digital Format:

Downloadable PDF

📖 Manual Coverage

Systems Covered

Powertrain:

Engine, transmission, drivetrain, cooling system, fuel system, exhaust system

Chassis:

Suspension, steering, brakes, wheels and tires

Electrical:

Wiring diagrams, lighting, starting and charging system, ignition system, ECU diagnostics, accessories

Body:

Body panels, interior trim, glass, exterior trim, collision repair basics

Procedures Included

Maintenance:

Scheduled maintenance, oil changes, filter replacements, tune-ups

Repair:

Engine overhaul, transmission rebuilds, brake caliper replacement, suspension component renewal

Diagnostics:

Troubleshooting guides, symptom-based diagnosis, fault code interpretation (OBD-I/early OBD-II)

Technical Depth

Scope:

Comprehensive factory-level detail for mechanics and experienced DIYers

Diagnostic Tools:

Information on specific Subaru diagnostic tools and procedures for the era

📊 Manual Specifications

File Format

Quality:

High-resolution scans, likely searchable text for key terms

Print Quality

Reproducibility:

Suitable for printing individual sections or the entire manual

Binding Type

Typical Print:

Spiral-bound or comb-bound for lay-flat use in a workshop

Paper Type

Recommended Print:

Durable paper stock (e.g., 20-24 lb)

⚙️ Engine Specifications

Primary Engine

Type:

Horizontally-opposed (Boxer), turbocharged, intercooled, DOHC

Displacement:

2.0 Liters (1994 cc)

Bore X Stroke:

92.0 mm x 75.0 mm

Compression Ratio:

8.5:1

Performance

Horsepower Ej20G:

237 hp @ 6000 rpm (JDM Spec)

Torque Ej20G:

240 lb-ft @ 4800 rpm (JDM Spec)

Horsepower Ej20K:

276 hp @ 6500 rpm (JDM Spec, later models)

Torque Ej20K:

244 lb-ft @ 5000 rpm (JDM Spec, later models)

Fuel System

Injection:

Multi-point Fuel Injection (MPI)

Ignition:

Distributorless Electronic Ignition (Diel) or distributor-based ignition depending on specific market/model year

Engine Management

ECU Type:

Subaru Engine Control Unit (ECU) with early OBD-I or OBD-II compliance

🔧 Transmission

Standard

Type:

5-Speed Manual

Optional

Type:

None (WRX models exclusively manual for this generation)

Features

AWD System:

Subaru Symmetrical All-Wheel Drive with viscous coupling center differential

Rear Differential:

Viscous LSD or Helical LSD depending on model/market

📐 Dimensions

Exterior

Length:

Approx. 4350 mm (171.3 in)

Width:

Approx. 1700 mm (66.9 in)

Height:

Approx. 1405 mm (55.3 in)

Wheelbase:

Approx. 2520 mm (99.2 in)

Weights

Curb Weight:

Approx. 1280-1350 kg (2820-2975 lbs) depending on trim and options

🛡️ Safety Features

Ratings

Crash Test Results:

Limited formal crash testing data available for this era JDM performance model in major Western markets

Active Features

Braking:

Front: Ventilated Disc, Rear: Solid Disc (WRX models typically featured larger front brakes than standard Impreza)

Available (standard on some higher-spec WRX models and export markets)

Passive Features

Airbags:

Driver airbag standard, passenger airbag optional/market dependent

Seatbelts:

3-point front and rear seatbelts

💡 Technology Features

Infotainment

Audio System:

Basic AM/FM/Cassette or CD player with 4-6 speakers. Optional premium sound system.

Driver Assistance

Traction Control:

Not typically available on WRX models of this generation. Focus is on mechanical grip.

Connectivity

OBD System:

OBD-I or early OBD-II compliant for engine diagnostics.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000-5,000 miles or 3-6 months (severe service recommendations apply for performance driving)

Timing Belt Replacement:

Every 60,000 miles or 5 years (critical for EJ20 engine integrity)

Spark Plug Replacement:

Every 30,000-60,000 miles depending on plug type

Fluid Specifications

Engine Oil:

API SG/SH/SJ, Viscosity: 10W-30 or 10W-40 (check manual for specific climate/performance recommendations)

Coolant:

Subaru Super Coolant (blue) or equivalent ethylene glycol-based coolant with deionized water

Transmission Fluid:

API GL-5, SAE 75W-90 (for manual transmission)

Differential Fluid:

API GL-5, SAE 75W-90 (front and rear, center differential typically uses same fluid type as transmission)

Known Issues

Engine Component Failure:

Head gasket leaks, cracked cylinder heads (especially with aggressive tuning), ring land failures due to detonation

Turbocharger Issues:

Bearing failure, oil seal leaks, wastegate issues

Suspension Wear:

Worn bushings, ball joints, and strut mounts due to performance driving

Rust Corrosion:

Common in areas with road salt, particularly on underbody, wheel wells, and strut towers

📚 Vehicle History

Brand Heritage

Subaru Rally Legacy:

Strong lineage in motorsports, particularly World Rally Championship (WRC)

Model Evolution

Impreza Introduction:

First generation (GC/GF/GM) introduced in 1992, WRX variant launched shortly after to homologate for WRC

Gc8 Development:

The GC8 chassis represents a significant step in Subaru's performance evolution, establishing the WRX as a potent rally-bred street car

Production

Manufacturing Location:

Japan

Model Years Covered:

1997, 1998

🏆 Awards & Recognition

Recognitions

Rally Success:

The GC8 Impreza WRX was a dominant force in WRC, winning multiple championships, which significantly boosted its street car appeal and performance credibility.