🏷️ Basic Information Identification Make: BMW Model: M3 Generation: E30 Year: 1987 Codes Chassis Code: E30 Engine Code: S14B23 👋 Introduction Market Position Positioning: The 1987 BMW M3 E30 was a homologation special designed for Group A touring car racing, establishing BMW's reputation for high-performance driver-focused sedans. Competitive Analysis Competitors: Competed against cars like the Ford Sierra RS Cosworth, Mercedes-Benz 190E 2.3-16 Cosworth, and Alfa Romeo 75 Evoluzione. Key Features Performance Focus: Renowned for its exceptional handling, balanced chassis, and spirited engine performance. Design Elements: Distinctive box flares, aggressive aerodynamic body kit, and motorsport-inspired interior. Manual Value Value Proposition: Indispensable resource for owners and mechanics seeking to maintain, diagnose, and repair the iconic E30 M3 to factory specifications. 📋 Manual Details Coverage Areas Models Covered: All M3 E30 models Repair Scope: A-Z (All repairs) Data Specificity: Vehicle Specific (Not generic) Target Audience: Dealership Technicians Page Count Estimated Page Count: Extensive (Exact count not provided, typical for factory manuals) Manual Type Type: Service and Repair Manual Language Language: English (Assumed based on common availability for this market) Format Format: Printed (Typical for original dealership manuals) 📖 Manual Coverage Systems Covered Engine: Complete diagnosis, repair, overhaul, and specifications for the S14B23 engine. Fuel System: Bosch Motronic fuel injection system, fuel pump, injectors, fuel pressure regulator, tank, lines. Ignition System: Ignition timing, coil, distributor, spark plugs, ignition control module (ICM). Cooling System: Radiator, water pump, thermostat, coolant, hoses, fan assembly. Exhaust System: Exhaust manifolds, catalytic converter (if applicable for region), muffler, pipes. Transmission Manual: Getrag 265 5-speed manual transmission, clutch system, shifter linkage, fluid specifications. Transmission Automatic: Not applicable for the E30 M3. Drivetrain: Driveshaft, CV joints, differential (limited slip differential - LSD), rear axle assembly. Suspension Front: MacPherson struts, control arms, sway bar, bushings, steering knuckle, wheel bearings. Suspension Rear: Trailing arms, coil springs, shock absorbers, sway bar, bushings. Steering System: Power steering system, steering rack, tie rods, steering column, pump, fluid. Brakes Front: Ventilated disc brakes, calipers, pads, rotors, brake lines, ABS (if equipped). Brakes Rear: Solid disc brakes, calipers, pads, rotors, brake lines, ABS (if equipped). Electrical System: Battery, alternator, starter, wiring diagrams, fuses, relays, lighting, horn. Electronics Control: Engine Control Unit (ECU) diagnosis, Motronic system. Body And Trim: Exterior body panels, fenders, bumpers, hood, trunk, doors, interior trim, glass. HVAC: Heating, ventilation, and air conditioning system (if equipped). Body Electrical: Power windows, mirrors, central locking, interior lighting, instrumentation. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, tune-ups. Troubleshooting: Diagnostic procedures for all systems, common fault finding. Repair: Step-by-step instructions for component removal, repair, and reinstallation. Overhaul: Complete engine, transmission, and differential overhaul procedures. Diagnostics: Detailed diagnostic trees, error code interpretation for Motronic system. Adjustments: Valve adjustments, throttle body synchronization, idle speed control. Torque Specifications: All critical torque values for fasteners and components. Technical Depth Depth: Comprehensive: Covers everything from basic fluid changes to full engine rebuilds and complex electrical diagnostics. Detail Level: Factory-level detail with exploded diagrams, schematics, and specifications. 📊 Manual Specifications File Format Format: Printed Hardcopy (Original Manufacturer Format) Print Quality Quality: High-quality paper and printing as per original BMW documentation standards. Binding Type Binding: Perfect bound or spiral bound (depending on original format), designed for workshop use. Paper Type Paper: Durable, often coated paper to resist shop grime. ⚙️ Engine Specifications Primary Engine Engine Code: S14B23 Engine Type: Naturally aspirated inline-4 cylinder Displacement: 2.3 Liters (2302 cc) Bore X Stroke: 91 mm x 87 mm Compression Ratio: 10.5:1 Valvetrain: DOHC (Double Overhead Camshaft), 4 valves per cylinder Performance Horsepower: 195 hp @ 6,000 rpm (Catalytic Converter Version: 192 hp) Torque: 230 Nm (170 lb-ft) @ 4,750 rpm Fuel System Fuel Delivery: Bosch Motronic Injection (L-Jetronic variant with ECU) Fuel Type: Premium Unleaded Gasoline (91+ Octane) Fuel Pump Pressure: Approximately 5 bar (72.5 psi) Fluid Specifications Engine Oil Type: SAE 15W-50 or 10W-40 Synthetic (check manual for exact seasonal recommendations) Engine Oil Capacity: 5.7 Liters (6.0 US Quarts) with filter change 🔧 Transmission Standard Type: Getrag 265 5-speed Manual Transmission Optional Type: Not available (E30 M3 was exclusively manual) Features Gear Ratios: Close-ratio gear set, Dog-leg first gear pattern (1st gear is down and to the left) Clutch: Hydraulically actuated single dry plate clutch Fluid Specifications Transmission Fluid Type: BMW recommended Synthetic Gear Oil (e.g., SAE 75W-90 GL-4/GL-5) Transmission Fluid Capacity: Approximately 1.5 Liters Differential Fluid Type: SAE 75W-140 Synthetic Gear Oil (for LSD) 📐 Dimensions Exterior Length: 4,330 mm (170.5 in) Width: 1,700 mm (66.9 in) Height: 1,370 mm (53.9 in) Wheelbase: 2,565 mm (101.0 in) Track Width Front: 1,406 mm (55.4 in) Track Width Rear: 1,430 mm (56.3 in) Weights Curb Weight: Approximately 1,200 kg (2,646 lbs) Gross Vehicle Weight Rating: Not specified, but typically around 1,700 kg Weight Distribution: Near 50/50 front/rear, contributing to its renowned handling Wheels And Tires Wheel Size: 15...