🏷️ Basic Information Identification Make: BMW Model: 320i Model Code: E30 Chassis Codes: E30 Codes Production Years Covered: 1987, 1988, 1989, 1990, 1991 👋 Introduction Market Position Target Audience: BMW enthusiasts, DIY mechanics, independent repair shops specializing in vintage BMWs. Competitive Analysis Value Proposition: Provides essential, detailed information to maintain and repair the E30 320i, significantly reducing reliance on expensive dealership services or guesswork. Key Features Diagnostic Emphasis: Strong emphasis on diagnostic procedures for fuel injection and ignition systems, crucial for this era of BMW. Diagrams Illustrations: Includes detailed exploded diagrams, wiring schematics, and step-by-step illustrations for complex procedures. 📋 Manual Details Coverage Areas Covered Models: BMW 320i (E30 chassis) Covered Years: 1987-1991 Page Count Estimated Page Count: Varies by publication, typically 800-1500+ pages for comprehensive workshop manuals. Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Digital (PDF) is most common for modern sales, though original print versions exist. 📖 Manual Coverage Systems Covered Engine: M20B20 (2.0L inline-6) engine, including maintenance, diagnostics, repair, overhaul, fuel injection (Bosch L-Jetronic/Motronic), ignition system, cooling, lubrication, exhaust. Transmission: 4-speed manual, 5-speed manual (Getrag 260), 3-speed automatic (ZF 3HP22). Includes clutch, drivetrain, differentials. Suspension: Front MacPherson struts, rear semi-trailing arms. Includes steering, wheel bearings, shock absorbers, bushings. Brakes: Front ventilated discs, rear solid discs. Includes ABS (optional), hydraulic system, parking brake. Electrical: Wiring diagrams, lighting, battery, alternator, starter, fuses, relays, instrumentation, engine control unit (ECU). Body And Chassis: Body panels, doors, glass, interior trim, chassis components, corrosion protection. HVAC: Heating, ventilation, and air conditioning (if equipped). Fuel System: Fuel tank, fuel pump, fuel lines, injectors. Procedures Included Maintenance: Routine checks, oil changes, filter replacements, spark plug service, fluid checks, belt adjustments. Troubleshooting: Diagnostic charts, symptom-based troubleshooting for engine, electrical, and mechanical issues. Repair: Step-by-step repair procedures for all major components, including engine rebuilds, transmission overhauls, brake system repairs, suspension component replacement. Disassembly Reassembly: Detailed instructions for disassembling and reassembling engine, transmission, and other major systems. Specifications: Torque specifications, clearances, tolerances, alignment data. Technical Depth Depth: Comprehensive. Covers everything from basic preventative maintenance to full engine and transmission rebuilds, electrical system diagnostics, and bodywork. 📊 Manual Specifications File Format Digital Format: PDF (typically searchable and printable). Print Quality Print Quality For Digital: High resolution, clear diagrams and text suitable for printing individual pages or the entire manual. Binding Type Binding For Physical Copy: Likely perfect bound or spiral bound for workshop manuals to lay flat. Paper Type Paper Type For Physical Copy: Durable, often glossy or semi-gloss paper to withstand shop conditions. ⚙️ Engine Specifications Primary Engine Engine Code: M20B20 Engine Type: Inline 6-cylinder, SOHC Displacement: 1990 cc (2.0 Liters) Performance Bore X Stroke: 80.0 mm x 66.0 mm Compression Ratio: 8.8:1 (typical) Horsepower: 125-129 hp (approx. @ 6000 rpm, depending on market/spec) Torque: 165-170 Nm (approx. @ 4300 rpm, depending on market/spec) Fuel System Fuel Injection: Bosch L-Jetronic or Motronic (ECU controlled). Fuel Type: Unleaded Gasoline (RON 95 recommended) Cooling Cooling System Type: Water-cooled, pressurized system. Lubrication Oil Capacity: Approx. 4.25 liters (4.5 US qts) with filter. Oil Type Specification: BMW Approved, API SG or higher, SAE 15W-40 or 10W-40 (depending on climate). 🔧 Transmission Standard Transmission Type Standard: 4-speed Manual Optional Transmission Type Optional 1: 5-speed Manual (Getrag 260) Transmission Type Optional 2: 3-speed Automatic (ZF 3HP22) Features Clutch Type: Hydraulically operated dry single-plate clutch. Manual Transmission Fluid: GL-4 Gear Oil (SAE 75W-90 or 80W-90 recommended). Automatic Transmission Fluid: Dexron II or equivalent. 📐 Dimensions Exterior Length: 4325 mm (170.3 in) Width: 1670 mm (65.7 in) Height: 1380 mm (54.3 in) Wheelbase: 2570 mm (101.2 in) Weights Curb Weight: Approx. 1200-1300 kg (2645-2866 lbs) Gross Vehicle Weight Rating: Varies by specification, typically around 1700 kg. Cargo Trunk Capacity: Approx. 425 liters (15.0 cu ft) 🛡️ Safety Features Ratings Federal Motor Vehicle Safety Standards Compliance: Designed to meet FMVSS standards of its era. Active Features Anti Lock Braking System: Optional (ABS). Passive Features Seatbelts: Three-point seatbelts (front), two-point lap belts (rear). Body Construction: Unitized steel body with crumple zones. Steering Column: Collapsible steering column. 💡 Technology Features Infotainment Radio System: Factory AM/FM stereo with cassette player, often with premium sound system option (e.g., Hi-Fi). Speaker Configuration: Typically 4-6 speakers, with upgraded options available. Driver Assistance Cruise Control: Available as an option. Connectivity Connectivity Features: Minimal by modern standards; primary connectivity is through the vehicle's electrical system for diagnostics. 🔧 Maintenance Service Intervals Oil And Filter Change: Every 7,500 - 10,000 miles (12,000 - 16,000 km) or annually, whichever comes first. Air Filter Replacement: Every 15,000 - 20,000 miles (24,000 - 32,000 km). Spark Plug Replacement: Every 20,000 - 30,000 miles (32,000 - 48,000 km). Coolant Flush: Every 2 years or 30,000 miles (48,000 km). Timing Belt Replacement: Crucial for M20 engines. Typically every 40,000 - 60,000 miles (64,000 - 96,000 km)...