🏷️ Basic Information Identification Make: BMW Model: M3 Chassis Code: E30 Generation Generation Code: E30 👋 Introduction Market Position Market Segment: Performance Compact Sports Sedan/Coupe Target Audience: Enthusiasts, owners, and independent repair shops specializing in BMW. Competitive Analysis Primary Competitors: Ford Sierra Cosworth, Alfa Romeo 75 Evoluzione, Mercedes-Benz 190E 2.3-16. Key Features Vehicle Uniqueness: Homologation special derived from motorsport, distinct chassis and suspension compared to standard E30 models, unique S14 engine. Manual Value Proposition: Provides comprehensive factory-level technical data essential for maintaining and repairing the iconic E30 M3. 📋 Manual Details Coverage Areas Manual Type: Factory Workshop Service Manual / Repair Manual Language: English Format: Digital Download (PDF) File Availability: Instant Download Print Capability: All pages printable Software Requirements: Adobe PDF Reader, WinZip Operating System Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, component replacement, timing belt/chain, lubrication, cooling system, intake and exhaust systems, engine management. Engine Electrical: Ignition system, fuel injection system (Bosch Motronic), sensor diagnostics, starter, alternator, wiring diagrams, ECU troubleshooting. Transmission: Manual gearbox (Getrag 265) repair and overhaul, clutch system, driveline, differential service. Suspension: Front strut assembly, rear multi-link suspension, bushings, shock absorbers, springs, alignment specifications. Brakes: Front and rear disc brakes, ABS system (if equipped), brake fluid, master cylinder, calipers, bleeding procedures. Steering: Power steering system, steering rack, tie rods, steering column, alignment. Electrical System: Lighting, instrumentation, power windows, central locking, fuse box diagrams, relay assignments, body control modules. Bodywork: Body panel removal and installation, interior trim, convertible top mechanism (if applicable), chassis structure. Heating Ventilation Air Conditioning: HVAC system components, refrigerant, blower motor, climate control unit. Procedures Included Maintenance Procedures: Routine checks, oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, brake pad replacement. Diagnostic Procedures: Troubleshooting guides for common issues, fault code interpretation (OBD I), symptom-based diagnostics. Repair Procedures: Step-by-step instructions for component removal, installation, and adjustment for all major systems. Engine Rebuilding: Detailed instructions for engine disassembly, inspection, machining, and reassembly. Electrical Troubleshooting: Use of wiring diagrams, continuity testing, voltage checks, component testing. Suspension Alignment: Specifications and procedures for wheel alignment (caster, camber, toe). Technical Depth Diagnostic Tools: Information on using specialized BMW diagnostic tools and equipment relevant to the E30 M3 era. Torque Specifications: Comprehensive list of torque values for all critical fasteners across all systems. Special Tools: Identification and usage of BMW-specific tools required for certain procedures. Wiring Diagrams: Detailed, system-specific wiring diagrams for electrical components and troubleshooting. Fluid Capacities And Types: Precise information on all fluid types and capacities for engine oil, transmission fluid, coolant, brake fluid, power steering fluid, and differential oil. 📊 Manual Specifications File Format File Format: PDF Digital Delivery: Instant Download Print Quality Print Quality: High-resolution, suitable for clear printing. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: S14 Engine Type: Inline-4, DOHC, 4 valves per cylinder Displacement: 2.3 liters (2302 cc) Performance Horsepower Ps: 238 PS (European-only iteration) Horsepower Hp: 235 hp Torque Nm: 240 Nm (approx.) Redline: 7250 RPM Fuel System Fuel Delivery: Bosch Motronic M1.3 Fuel Injection Fuel Type: Unleaded Gasoline (Premium) 🔧 Transmission Standard Transmission Type: 5-Speed Manual Gearbox Model: Getrag 265 Optional Optional Transmission: N/A (Exclusively Manual) Features Differential: Limited-Slip Differential (LSD) typically standard. 📐 Dimensions Exterior Body Styles: 2-door Sedan, 2-door Convertible Wheelbase: Approx. 2565 mm (101 inches) Length: Approx. 4380 mm (172.4 inches) Width: Approx. 1700 mm (66.9 inches) Height: Approx. 1370 mm (53.9 inches) for Coupe Weights Curb Weight: Approx. 1200 kg (2646 lbs) Wheel Bolt Pattern: 5x120 🛡️ Safety Features Ratings Historical Safety Ratings: E30 platform safety standards of the era; specific M3 ratings vary by region and testing body. Active Features ABS: Anti-lock Braking System (ABS) available as an option on some models. Passive Features Seatbelts: Three-point inertia reel seatbelts Chassis Reinforcement: Significant chassis stiffening and unique body panels (fender flares, rear spoiler) for aerodynamic and structural integrity. 💡 Technology Features Infotainment Audio System: Period-appropriate BMW Bavaria C or similar cassette/radio units. Driver Assistance ABS Availability: Optional ABS system. Connectivity ECU Diagnostics: OBD I diagnostic port. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000 - 7,500 miles (8,000 - 12,000 km) or annually, depending on driving conditions. Spark Plug Replacement: Refer to manual, typically 30,000 miles (48,000 km). Timing Belt Replacement: S14 uses a timing chain, requiring periodic inspection but not scheduled replacement unless noisy or worn. Fluid Specifications Engine Oil Type: Synthetic SAE 5W-30 or 5W-40, API SG or higher (consult manual for exact BMW specs). Coolant Type: BMW Antifreeze/Coolant (G48 or equivalent). Brake Fluid Type: DOT 4 (high-performance). Transmission Fluid Type: BMW ATF D3 or equivalent (for Getrag 265, check manual for specific fluid). Known Issues Engine Oil Sludge: Potential for oil sludge buildup if maintenance is neglected, particularly...