🏷️ Basic Information Identification Make: BMW Model: 8 Series Model Generation: E31 Years Covered: 1989-1993 Codes Chassis Code: E31 👋 Introduction Market Position Market Position: The BMW 8 Series (E31) represented BMW's entry into the ultra-luxury grand tourer segment, competing with models like the Mercedes-Benz SL and the Porsche 928. It was positioned as a high-performance, sophisticated, and technologically advanced coupe. Competitive Analysis Competitive Analysis: The E31 8 Series offered a blend of V8 or V12 power, advanced aerodynamics, a driver-focused cockpit, and luxurious appointments, differentiating itself through its unique styling and BMW's renowned driving dynamics. Its technology, such as the self-leveling suspension and electronic damper control, set it apart from many contemporaries. Key Features Key Features: Pop-up headlights, frameless doors, shark-nose front end, powerful V8 and V12 engines, sophisticated chassis dynamics, luxurious interior, advanced electronics for its era. 📋 Manual Details Coverage Areas Coverage Areas: All systems and components of the BMW 8 Series (E31) models from 1989-1993 Page Count Page Count: Estimated 3000+ pages (typical for a comprehensive factory service manual) Manual Type Manual Type: Factory Service Repair Workshop Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Systems Covered: Engine mechanical, engine management, fuel system, exhaust system, transmission (manual & automatic), drivetrain, suspension (front & rear), steering, brakes (hydraulic & ABS), electrical system, body control module (BCM), climate control, heating, ventilation, air conditioning (HVAC), infotainment, safety systems (airbags, seatbelts), interior trim, exterior body panels, lighting, diagnostics, troubleshooting Procedures Included Procedures Included: Routine maintenance, scheduled maintenance, component removal and installation, disassembly and reassembly, lubrication, fluid changes, diagnostic procedures, wiring diagrams, troubleshooting guides, component testing, calibration, specifications, torque values, alignment procedures Technical Depth Technical Depth: Comprehensive, from basic fluid checks and filter replacements to complete engine rebuilds, transmission overhauls, advanced electrical diagnostics, and body repair. 📊 Manual Specifications File Format File Format: High-resolution, searchable PDF Print Quality Print Quality: Printable, with clear diagrams and text Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Primary Engine: 4.0L M60B40 V8 Engine Variants Engine Variants: 4.0L M60B40 V8, 4.4L M62B44 V8 (later models), 5.0L M70B50 V12, 5.6L M73B56 V12 (later models) Performance V8 Performance V8: Approx. 282 hp @ 5800 rpm, 295 lb-ft @ 4500 rpm (M60B40) Performance V12 Performance V12: Approx. 296 hp @ 5200 rpm, 332 lb-ft @ 3900 rpm (M70B50) Fuel System Fuel System: Electronic Fuel Injection (Bosch Motronic) Engine Management Engine Management: Digital Engine Management (DME) Bore Stroke V8 Bore Stroke V8: 92.0 mm x 72.7 mm (M60B40) Compression Ratio V8 Compression Ratio V8: 10.0:1 (M60B40) Bore Stroke V12 Bore Stroke V12: 84.0 mm x 90.0 mm (M70B50) Compression Ratio V12 Compression Ratio V12: 8.8:1 (M70B50) 🔧 Transmission Standard Standard: 5-speed manual transmission (Getrag 420G for V8 models) Optional Optional: 4-speed automatic transmission (ZF 4HP24 for V8, ZF 5HP30 for V12) Features Auto Features Auto: Electronic control, Sport mode, Sequential Manual Gearbox (SMG) was considered but not produced for E31. Clutch Type Clutch Type: Hydraulically actuated single-plate dry clutch (manual) Transmission Fluid Spec Auto Transmission Fluid Spec Auto: Dexron III / Mercon or equivalent (check specific model for precise specification) Transmission Fluid Spec Manual Transmission Fluid Spec Manual: BMW MTF LT-2 or equivalent (e.g., Castrol TWS Motorsport 75W-90) 📐 Dimensions Exterior Length Exterior Length: Approx. 4,780 mm (188.2 in) Exterior Width Exterior Width: Approx. 1,855 mm (73.0 in) Exterior Height Exterior Height: Approx. 1,370 mm (53.9 in) Wheelbase Wheelbase: Approx. 2,630 mm (103.5 in) Curb Weight V8 Curb Weight V8: Approx. 1,700 kg (3,748 lbs) (manual transmission) Curb Weight V12 Curb Weight V12: Approx. 1,850 kg (4,079 lbs) Cargo Volume Cargo Volume: Approx. 330 liters (11.6 cu ft) Fuel Capacity Fuel Capacity: Approx. 90 liters (23.8 US gal) 🛡️ Safety Features Ratings Ratings: No official crash test ratings are widely available for this era of BMW as standardized testing was less prevalent. However, it was engineered to meet stringent safety standards of its time. Active Features Active Features: Anti-lock Braking System (ABS), Traction Control System (ASC+T for later models), Electronic Damper Control (EDC) on some models. Passive Features Passive Features: Driver and passenger front airbags, reinforced passenger cell, crumple zones, seatbelt pretensioners. Brake System Front Brake System Front: Ventilated discs, 324 mm diameter (typical for 840i/850i) Brake System Rear Brake System Rear: Solid discs, 308 mm diameter (typical for 840i/850i) Tire Size Standard Tire Size Standard: 235/50 R16 (common for 840i), 235/50 R16 front / 255/45 R16 rear (common for 850i) Wheel Bolt Pattern Wheel Bolt Pattern: 5x120 mm 💡 Technology Features Infotainment Infotainment: Cassette player with optional CD changer, AM/FM radio, premium sound systems (e.g., Harman Kardon optional). Driver Assistance Driver Assistance: Cruise control, Electronic Damper Control (EDC) on some models allowing adjustable suspension firmness. Connectivity Connectivity: Basic telecommunications features for...