🏷️ Basic Information Identification Make: BMW Model: 320i Chassis Code: E30 Covered Years: 1987-1991 Codes Engine Code Range: M20B20 👋 Introduction Market Position Target Audience: DIY enthusiasts, independent repair shops, BMW E30 owners seeking detailed technical information. Value Proposition: Provides comprehensive, actionable repair and maintenance data to empower owners and technicians. Competitive Analysis Competitor Manuals: Direct competitor to official BMW service manuals and other aftermarket repair guides for the E30 chassis. Key Features Visual Aids: Extensive use of exploded views, diagrams, and illustrations for clarity. Instruction Style: Step-by-step instructions tailored for ease of understanding and execution. Scope Of Coverage: Encompasses nearly all aspects of vehicle servicing and repair, from routine maintenance to major overhauls. 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Language: English Format: PDF (Digital Download) Compatibility: PC & Mac compatible (Windows 95, 98, 2000, NT, XP, Vista, 7, etc.) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, disassembly, assembly, tuning, diagnostics, lubrication system, cooling system, fuel system (including EFI), ignition system, emission control systems. Transmission: Manual and Automatic transmission repair, clutch system, driveshaft, differential, axle shafts. Suspension: Front and rear suspension components, shock absorbers, springs, control arms, bushings, steering system (rack and pinion). Brakes: Hydraulic brake system, front and rear disc brakes, parking brake, ABS (if equipped), brake fluid specifications. Electrical: Wiring diagrams, starter system, charging system (alternator), battery, lighting systems, ignition system components, diagnostic connectors, fuse box layout, common electrical faults. Bodywork: Exterior body panels, doors, hood, trunk, bumpers, glass, interior trim, body repair procedures, rust prevention, paint codes (general guidance). Heating Ventilation Air Conditioning: HVAC system operation, blower motor, evaporator, condenser, refrigerant, system diagnostics (general). Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection and replacement, brake pad replacement, tire rotation. Troubleshooting: Step-by-step diagnostic procedures for common drivability issues, electrical faults, and mechanical problems. Repair: Detailed instructions for component replacement, overhaul, and adjustment across all major vehicle systems. Overhaul: Comprehensive engine and transmission rebuild procedures, including torque specifications and critical measurements. Adjustment: Carburetor (if applicable for early models), ignition timing, valve clearance, parking brake. Technical Depth Depth Level: Comprehensive Workshop Manual Detail Level: Detailed step-by-step instructions, exploded views, and diagrams for disassembly and re-assembly. Diagnostic Capabilities: Includes procedures for diagnosing common mechanical and electrical issues. 📊 Manual Specifications File Format Digital Format: PDF Searchability: Likely text-searchable PDF, allowing for quick information retrieval. Print Quality: High-resolution, suitable for printing individual pages or sections. Binding Type Binding Description: N/A (Digital Download) Paper Type Paper Description: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, SOHC Engine Code: M20B20 Displacement: 1990 cc (2.0 Liters) Bore X Stroke: 80.0 mm x 99.0 mm Compression Ratio: 8.8:1 (typical for early M20B20) Performance Horsepower: 125-129 hp (approx. 92-95 kW) at 5800-6000 rpm (depending on market and specific tuning) Torque: 170-174 Nm (approx. 125-128 lb-ft) at 4500-4800 rpm (depending on market and specific tuning) Fuel System Fuel Injection: Bosch L-Jetronic or Motronic EFI (Electronic Fuel Injection) Fuel Type: Unleaded gasoline (RON 91 or higher recommended, check manual for specific octane) Fuel Pump Type: In-tank electric fuel pump Ignition System Ignition Type: Electronic ignition with distributor (may include electronic spark control depending on specific model year/market) Maintenance Items Spark Plugs: NGK BPR6ES or equivalent (check manual for exact part number and gap) Engine Oil Capacity: Approx. 4.25 Liters (4.5 US Quarts) with filter change (refer to manual for exact capacity) Engine Oil Specification: SAE 15W-40 or 10W-40, API SF/SG or higher (refer to manual for specific viscosity and API rating) Coolant Type: Ethylene glycol-based coolant, 50/50 mix with distilled water 🔧 Transmission Standard Transmission Type: 4-speed or 5-speed Manual Transmission Optional Transmission Type: 3-speed Automatic Transmission (ZF 3HP22) Features Clutch Type: Hydraulically operated single-plate dry clutch Manual Gear Ratios: Specific gear ratios for 4-speed and 5-speed transmissions will be detailed in the manual. Automatic Fluid Type: Dexron II or equivalent ATF (Automatic Transmission Fluid) Maintenance Items Manual Transmission Fluid Type: SAE 75W-90 or 80W-90 GL-4 gear oil (check manual for specific API rating and capacity) 📐 Dimensions Exterior Length: Approximately 4355 mm (171.5 inches) Width: Approximately 1675 mm (66.0 inches) Height: Approximately 1380 mm (54.3 inches) Wheelbase: Approximately 2570 mm (101.2 inches) Weights Curb Weight: Approximately 1200-1300 kg (2645-2866 lbs), varies by configuration 🛡️ Safety Features Ratings Crash Test Data: While official NHTSA/Euro NCAP ratings for this specific vintage may be limited, the E30 chassis was known for its rigid body structure for its era. Manual will detail safety system components. Active Features Brakes: Front ventilated discs, rear solid discs (standard on most models); ABS available as an option. Steering: Recirculating ball or rack and pinion (depending on specific VIN/market), power steering optional/standard. Passive Features Seat Belts: 3-point front seat belts (may have manual or automatic tensioners), 2-point rear...