🏷️ Basic Information Identification Make: BMW Model: 325i Model Code: E30 Applicable Years: 1984, 1985, 1986, 1987, 1988, 1989, 1990 👋 Introduction Market Position Market Segment: Compact Executive Sport Sedan Brand Perception: Performance, luxury, engineering excellence Competitive Analysis Key Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Volvo 240 Key Features Chassis Design: Iconic E30 chassis, RWD biased, excellent balance and handling Engine Characteristics: Smooth inline-six power delivery, known for durability Driving Dynamics: Renowned for precise steering and engaging driving experience Manual Value Proposition: Essential resource for maintaining and repairing a classic BMW that demands meticulous care 📋 Manual Details Coverage Areas Manual Type: Service and Repair Workshop Manual Language: English Format: Likely digitized (PDF or similar), implied by online sales context Intended Audience: Professional mechanics and advanced DIY enthusiasts 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, overhaul, timing, valve adjustments, lubrication system Engine Management: Fuel injection (Bosch Motronic), ignition system, sensor diagnostics, emission controls Transmission Manual: Clutch system, gearbox overhaul, shift linkage, driveshaft, U-joints Transmission Automatic: Automatic gearbox overhaul, hydraulic control, torque converter, shift linkage Suspension: Front strut assembly, rear semi-trailing arms, bushings, springs, shock absorbers Steering: Power steering system, steering rack, tie rods, steering column, wheel alignment Brakes: Front disc brakes, rear drum or disc brakes (depending on specific model variant), hydraulic system, parking brake Electrical System: Battery, charging system (alternator), starting system, lighting, accessories, wiring diagrams Body And Chassis: Body panel removal/installation, structural components, rust repair, interior trim, glass, seals Heating Ventilation Air Conditioning HVAC: Blower motor, heater core, AC system (refrigerant handling, components) Fuel System: Fuel tank, fuel pump, fuel lines, fuel filter, evaporative emissions control Procedures Included Scheduled Maintenance: Oil changes, filter replacements, tune-ups, fluid checks and changes, brake inspections Troubleshooting: Diagnostic procedures for engine performance, electrical faults, and other common issues Component Repair: Detailed step-by-step instructions for rebuilding or replacing major components Special Tools: Identification and usage of specialized tools required for certain procedures Torque Specifications: Precise torque values for all critical fasteners Wiring Diagrams: Comprehensive electrical schematics for various systems Technical Depth Depth Of Coverage: Comprehensive; suitable for full vehicle rebuilds and advanced diagnostics 📊 Manual Specifications File Format Page Count: Estimated 500-1000+ pages (typical for comprehensive manuals of this era) File Type: Digital (e.g., PDF) Searchability: Likely text-searchable if a well-scanned PDF Print Quality Print Quality: Depends on the source digitization; often good to very good for professional manuals Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: M20B27 (US Spec), M20B25 (Euro Spec) Engine Type: Inline 6-cylinder, SOHC (Single Overhead Camshaft) Displacement: 2.7 liters (US, M20B27 eta), 2.5 liters (Euro and later US, M20B25) Performance Horsepower Us Spec B27: Approximately 121 hp @ 4800 rpm (detuned for torque) Torque Us Spec B27: Approximately 170 lb-ft @ 2400 rpm Horsepower Euro Spec B25: Approximately 170 hp @ 5800 rpm Torque Euro Spec B25: Approximately 164 lb-ft @ 4300 rpm Fuel System Fuel Delivery: Bosch Motronic electronic fuel injection (EFI) Fuel Type: Unleaded Gasoline (Premium Recommended) Ignition System: Electronic ignition with knock sensor (Motronic controlled) 🔧 Transmission Standard Standard Transmission: Getrag 260 5-speed manual Optional Optional Transmission: ZF 4HP22 4-speed automatic Features Clutch Type: Hydraulically operated single dry plate Rear Differential: Limited Slip Differential (LSD) often optional or standard on higher trims 📐 Dimensions Exterior Body Styles: 2-door Coupe, 4-door Sedan, Convertible Wheelbase: Approx. 100.4 inches (2550 mm) Length: Approx. 170.3 inches (4325 mm) Width: Approx. 67.3 inches (1709 mm) Height: Approx. 54.5 inches (1384 mm) Weights Curb Weight: Approx. 2800-3000 lbs (1270-1360 kg), varies by body style and options 🛡️ Safety Features Ratings Crash Test Data: Limited formal ratings for this era; designed to meet contemporary safety standards Active Features ABS: Anti-lock Braking System (ABS) often optional, especially on earlier models Passive Features Seatbelts: 3-point inertia reel seatbelts front and rear Head Restraints: Adjustable front and rear head restraints Body Structure: Reinforced safety cell and crumple zones 💡 Technology Features Infotainment Audio System: Factory cassette player with AM/FM radio, optional CD player on later models Speakers: Typically 4-6 speakers Driver Assistance Cruise Control: Optional Power Windows Locks: Optional or standard depending on trim Connectivity Auxiliary Inputs: None factory standard, aftermarket modifications common 🔧 Maintenance Service Intervals Oil Change Interval: Typically 5,000-7,500 miles or 6-12 months (depending on driving conditions and oil type used) Spark Plug Replacement: Approx. 30,000 miles (check manual for specific plug type and interval) Coolant Flush: Every 2-3 years or 30,000 miles Timing Belt Replacement: The M20 engine uses a timing chain, not a belt, which is generally more durable but requires tensioner checks. Fluid Specifications Engine Oil Spec: API SG or higher, SAE 15W-40 or 20W-50 recommended for most conditions (check manual for precise spec and temperature range) Coolant Type: Ethylene glycol based...