🏷️ Basic Information Identification Make: BMW Model: 8 Series Chassis Code: E31 Year: 1990 Generation Generation Code: First Generation 👋 Introduction Market Position Market Segment: Luxury Grand Tourer (GT) Competitive Analysis Competitors Era: Competed with vehicles such as the Mercedes-Benz SL-Class (R129), Porsche 928, Jaguar XJS, and Ferrari 412. Key Features Design Philosophy: BMW's design language of the late 1980s and early 1990s, emphasizing aerodynamic efficiency, a long hood, and a distinctive kidney grille. The E31 was BMW's first V8 and V12 powered production car. Target Audience: Affluent buyers seeking a blend of performance, luxury, advanced technology, and sophisticated styling for high-speed cruising. 📋 Manual Details Coverage Coverage Areas: Fundamentals, Lubrication and Maintenance, Engine Management-Driveability, Engine, Ignition, Fuel System, Cooling System, Exhaust System and Emission Controls, Manual Transmission and Clutch, Automatic Transmission and Clutch, Driveshaft and Final Drive, Brakes, Suspension and Steering, Body and Interior, Electrical System, Index Page Count Estimated Page Count: Detailed page count not specified, but factory service manuals for this era are typically extensive, often exceeding 1000 pages across multiple volumes or sections. Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical, engine management, driveability, ignition system, fuel system, cooling system, exhaust system, emission controls. Drivetrain Systems: Manual transmission, automatic transmission, clutch systems (manual and automatic), driveshaft, final drive (differential). Chassis Systems: Brakes (hydraulic, anti-lock, parking brake), suspension (front and rear), steering system (power steering). Body Electrical Systems: Body and interior components, electrical system (wiring diagrams, components, troubleshooting). Procedures Included Maintenance Procedures: Scheduled maintenance, lubrication, fluid changes, filter replacements, inspection procedures. Repair Procedures: Detailed step-by-step repair instructions for all major vehicle systems, including engine overhaul, transmission rebuild, brake component replacement, suspension and steering linkage repair, electrical component diagnostics and replacement. Diagnostic Procedures: Troubleshooting guides, symptom-based diagnostics, component testing, electrical system diagnostics. Technical Data And Specifications: Torque specifications, clearances, fluid capacities, fluid types, electrical component resistance values, diagnostic trouble codes (DTCs). Technical Depth Technical Depth: Comprehensive, covering everything from basic fluid checks and filter changes to complete engine rebuilds, transmission overhauls, and advanced electrical system diagnostics and repair. Suitable for professional technicians and experienced DIY enthusiasts. 📊 Manual Specifications File Format Printability: Yes (Printable) Searchability: PDF format generally allows for text search functionality if the OCR layer is present. Compatibility Operating Systems: WINDOWS and MAC Requirements Software Requirements: Adobe PDF Reader Delivery Delivery Method: Instant download after payment (PayPal or credit card). ⚙️ Engine Specifications Primary Engine Engine Code 1990: M60B30 (3.0L V8), M60B40 (4.0L V8). The V12 (M70B50) was introduced later in the E31's lifecycle, typically from 1990/1991 for the 850i. Performance Horsepower 3.0L V8: Approx. 215 hp @ 5800 rpm (M60B30) Torque 3.0L V8: Approx. 214 lb-ft @ 4500 rpm (M60B30) Horsepower 4.0L V8: Approx. 296 hp @ 5800 rpm (M60B40) Torque 4.0L V8: Approx. 295 lb-ft @ 4500 rpm (M60B40) Horsepower 5.0L V12: Approx. 296 hp @ 5200 rpm (M70B50, for 850i) Torque 5.0L V12: Approx. 332 lb-ft @ 4100 rpm (M70B50, for 850i) Fuel System Fuel Delivery: Bosch Motronic engine management system with multi-point fuel injection (MPI). Engine Design Engine Layout: V8 (3.0L, 4.0L) or V12 (5.0L) Valvetrain: Dual Overhead Camshafts (DOHC), 4 valves per cylinder. 🔧 Transmission Standard Standard Transmission Type: 6-speed manual transmission (Getrag 420G) was an option on V8 models, but more commonly available on later models. Early 1990 models predominantly featured automatic transmissions. Optional Optional Transmission Type: 4-speed automatic transmission (ZF 4HP24 for V8 models) or 5-speed automatic transmission (ZF 5HP30 for V12 models). Features Automatic Transmission Modes: Often featured Sport and Comfort modes for adjustable driving characteristics. 📐 Dimensions Exterior Body Style: 2-door coupe Wheelbase Mm: 2,632 mm (103.6 in) Length Mm: 4,794 mm (188.7 in) Width Mm: 1,855 mm (73.0 in) Height Mm: 1,370 mm (53.9 in) Weights Curb Weight Kg Approx: 1700 - 1900 kg (depending on engine and equipment) 🛡️ Safety Features Ratings Safety Ratings Era: Specific official crash test ratings (like NHTSA or Euro NCAP) for this specific 1990 model year might be limited or unavailable by modern standards. However, BMW vehicles of this era were engineered with a focus on occupant safety for their time. Active Features Anti Lock Brakes: Standard, BMW's ABS system. Traction Control: ASC (Automatic Stability Control) was available on some models, particularly V12 variants. Passive Features Airbags: Driver's airbag was standard, passenger airbag became available on later models or as an option. Seatbelts: 3-point inertia-reel seatbelts with pre-tensioners were standard. Body Structure: Reinforced safety cage, crumple zones. 💡 Technology Features Infotainment Infotainment System Era: Early 1990s technology. Typically featured a radio/cassette player, often with an optional CD player, and a trip computer. Navigation systems were very rudimentary or not widely available on early models. Climate Control: Automatic climate control with dual-zone temperature settings was...