🏷️ Basic Information Identification Make: BMW Model: 3 Series Generation Chassis Code: E30 Codes Model Variants: 318i, 325, 325e, 325es, 325i, 325is, 325i Convertible 👋 Introduction Market Position Positioning: The E30 3 Series was BMW's core sports sedan and coupe offering in the 1980s, renowned for its driving dynamics, build quality, and sporty appeal. It solidified BMW's reputation for 'The Ultimate Driving Machine'. Competitive Analysis Competitors: Competed against vehicles like the Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, and certain models from Ford (Sierra XR4i) and Opel/Vauxhall (Senator/Monza). Key Features Driving Dynamics: Exceptional handling, balanced chassis, responsive steering, and robust rear-wheel-drive platform. Design: Iconic Hofmeister kink, clean lines, driver-focused interior, and a range of body styles including sedan, coupe, convertible, and touring (wagon). 📋 Manual Details Coverage Areas Covered Years: 1984, 1985, 1986, 1987, 1988, 1989, 1990 Covered Models: BMW 3 Series E30 (318i, 325, 325e, 325es, 325i, 325is, 325i Convertible) Page Count Estimated Page Count: Approx. 2000+ pages (indicative for a complete workshop manual of this era and scope) Manual Type Type: Complete Workshop Service Repair Manual Language Language: English Format Format: Digital (likely PDF, assume searchable) 📖 Manual Coverage Systems Covered Engine: Detailed diagnosis, repair, overhaul for M10 (318i) and M20 (325e/i/is/es) engines, including timing, fuel injection (Bosch L-Jetronic/Motronic), ignition systems, cooling, lubrication. Transmission: Repair and overhaul for Getrag 260 manual transmissions (all variants) and ZF 4HP22 automatic transmissions, including clutch, driveshafts, differential, and axle repairs. Brakes: Front and rear brake systems (disc brakes), ABS system (if equipped), parking brake, hydraulic lines, master cylinder, caliper and rotor replacement, bleeding procedures. Suspension: Front and rear suspension components (struts, control arms, ball joints, bushings, sway bars), alignment specifications, shock absorber replacement. Steering: Power steering system diagnosis and repair, steering rack, tie rod ends, steering column, alignment. Electrical: Complete wiring diagrams, fuse box layout, starter, alternator, battery, lighting systems (headlights, taillights, interior), instrument cluster, power windows, central locking, heating and ventilation controls. Bodywork: Body panel removal and installation, door mechanisms, window regulators, convertible top mechanisms (for convertible models), interior trim, bumper repair. Procedures Included Maintenance: Routine maintenance tasks: oil changes, filter replacements, spark plug replacement, coolant flushes, brake pad and rotor replacement, belt checks and replacement. Diagnostics: Troubleshooting common problems, diagnostic codes (OBD I era), symptom-based troubleshooting for engine, electrical, and mechanical issues. Repair: Step-by-step instructions for component removal, repair, and reinstallation for all major vehicle systems. Rebuilds: Engine and transmission overhaul procedures, including specifications for machining and assembly. Special Tools: Identification and usage of specialized BMW tools required for various repair procedures. Technical Depth Depth: Comprehensive, suitable for professional technicians and experienced DIY enthusiasts. Covers from basic maintenance to full engine and transmission rebuilds. 📊 Manual Specifications File Format Format: PDF (typically high-resolution scans or digital creation) Searchability: Optimized for text search (OCR'd if scanned) Print Quality Quality: Clear text and diagrams, suitable for printing individual pages or sections. Binding Type Binding: Not applicable (Digital format) Paper Type Paper: Not applicable (Digital format) ⚙️ Engine Specifications Primary Engine 318I Engine: M10B18, 1.8L inline-4, SOHC, Bosch L-Jetronic fuel injection. 318I Power: Approx. 102-105 hp @ 5500-5800 rpm 318I Torque: Approx. 107-110 lb-ft @ 3250-3500 rpm 325E Engine: M20B27 'Eta' (Economy), 2.7L inline-6, SOHC, Bosch Motronic fuel injection. Designed for torque and fuel efficiency. 325E Power: Approx. 121-125 hp @ 4800-5000 rpm 325E Torque: Approx. 170 lb-ft @ 3250 rpm 325I Engine: M20B25, 2.5L inline-6, SOHC, Bosch Motronic fuel injection. Sportier tune than 325e. 325I Power: Approx. 168-171 hp @ 5600-6000 rpm 325I Torque: Approx. 164-167 lb-ft @ 4300-4750 rpm Fuel System Injection Type: Bosch L-Jetronic (318i), Bosch Motronic (325 series) Fuel Type: Unleaded gasoline (Octane rating requirements vary by market and engine tune) Performance Compression Ratio 318I: 8.5:1 Compression Ratio 325E: 9.4:1 Compression Ratio 325I: 8.8:1 🔧 Transmission Standard Manual Option: Getrag 260 5-speed manual transmission (standard on most performance variants) Optional Automatic Option: ZF 4HP22 4-speed automatic transmission (optional) Features Clutch Type: Single dry plate clutch (manual transmission) Rear Axle: Limited-slip differential (LSD) was a common option, especially on 'is' and 'es' models. Manual Gear Ratios: Varies by specific model and year; typically close-ratio for 325i/is, economy-biased for 325e. 📐 Dimensions Exterior Length: Approx. 4340-4360 mm (170.9-171.7 in) for Sedan/Coupe/Convertible. Width: Approx. 1675-1680 mm (65.9-66.1 in). Height: Approx. 1380-1415 mm (54.3-55.7 in). Wheelbase Wheelbase: Approx. 2570 mm (101.2 in). Weights Curb Weight: Approx. 1180-1350 kg (2600-2976 lbs) depending on model and equipment. 🛡️ Safety Features Ratings Crash Test Results: While official US NHTSA/IIHS ratings for the E30 era are scarce, the E30 was generally considered robust for its time. Later BMWs received higher ratings, but the E30's structure was a significant advancement for BMW. Active Features ABS: Anti-lock Braking System (ABS) was available as an option on most models, particularly the 325i/is. Passive Features Seatbelts: Three-point seatbelts with pretensioners. Body...