🏷️ Basic Information Identification Make: BMW Model: 3 Series (E30) Codes Chassis Code: E30 👋 Introduction Market Position Positioning: A definitive guide for BMW E30 owners seeking to maintain, repair, or restore their vehicles. Competitive Analysis Comparison: This guide offers a more hands-on, enthusiast-driven approach compared to generic workshop manuals, with a focus on restoration challenges. Key Features Author Expertise: Written by Andrew Everett, a seasoned journalist and dedicated E30 enthusiast, ensuring practical and informed advice. Model Breadth: Covers a wide array of E30 variants, including performance models and special editions. 📋 Manual Details Coverage Areas Primary Coverage: Restoration and Repair of BMW E30 3 Series models Secondary Coverage: Maintenance, Troubleshooting, Technical Advice Page Count Estimated Pages: 256 Manual Type Type: Restoration Guide/Workshop Manual Language Language: English Format Format: Printed Book 📖 Manual Coverage Systems Covered Powertrain: Engine mechanicals, fuel systems, ignition systems, exhaust systems Drivetrain: Transmission (manual and automatic), clutch, driveshafts, differentials Suspension Steering: Front and rear suspension components, steering rack, power steering system Brakes: Brake system diagnostics, fluid replacement, caliper and disc service, ABS (where applicable) Electrical: Wiring diagrams, component testing, battery, alternator, starter, lighting, instrumentation Bodywork: Panel replacement, rust repair techniques, trim removal/installation, convertible top mechanisms Interior: Seat removal, dashboard repair, interior trim restoration Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, coolant service, brake fluid service Troubleshooting: Diagnostic procedures for common running issues, electrical faults, and mechanical problems Major Repairs: Engine rebuilds, transmission overhauls, suspension component replacement, body panel welding Restoration Tips: Expert advice on sourcing parts, paint matching, period-correct detailing, and common pitfalls Technical Depth Depth: Comprehensive, from basic maintenance to full engine and chassis rebuilds Audience: Enthusiasts and DIY mechanics with varying skill levels 📊 Manual Specifications File Format Format: Printed Book Print Quality Quality: High-quality paper stock, clear diagrams and illustrations Binding Type Binding: Perfect Binding or Saddle-Stitched (typical for quality guides) Paper Type Paper: Durable, gloss or semi-gloss paper suitable for workshop environments ⚙️ Engine Specifications Primary Engine Engine Options Covered: M10 (4-cylinder petrol), M20 (6-cylinder petrol), M21 (4-cylinder diesel), S14 (4-cylinder performance petrol for M3) Performance Example Performance 325I: Approx. 170-171 hp (DIN) / 125-126 kW, 211 Nm torque (M20B25) Example Performance M3: Approx. 192-215 hp (DIN) / 141-158 kW, 240-255 Nm torque (S14B23/B25) Example Performance 324Td: Approx. 86 hp (DIN) / 63 kW, 170 Nm torque (M21D24 turbo-diesel) Fuel System Fuel Injection: Bosch L-Jetronic, Motronic (various versions) for petrol engines Fuel Type: Unleaded Petrol (Octane ratings vary by engine), Diesel Engine Variants 316: 1.8L M10B18 (carbureted) 316I: 1.8L M10B18 (fuel injected) 318I: 1.8L M10B18 (fuel injected) 320I: 2.0L M20B20 (fuel injected) 323I: 2.3L M20B23 (fuel injected) 325I / 325E: 2.7L M20B27 ('Eta' for 325e) or 2.5L M20B25 ('standard' for 325i) (fuel injected) 324D / 324Td: 2.4L M21D24 (naturally aspirated diesel / turbocharged diesel) 318Is: 1.8L M42B18 (16v DOHC, fuel injected) M3: 2.3L S14B23 (16v DOHC, fuel injected) Alpina: Various M20-based engines, often with increased displacement (e.g., 2.7L, 2.9L) and tuning 🔧 Transmission Standard Standard Transmission: 4-speed or 5-speed manual transmission (Getrag 240/260) Optional Optional Transmission: 3-speed automatic (ZF 3HP22) or 4-speed automatic (ZF 4HP22) Features Clutch Type: Single dry plate clutch Rear Axle: Limited-slip differential (LSD) optional on many models, standard on M3 and some performance variants 📐 Dimensions Exterior Wheelbase: Approx. 2570 mm (91.3 in) Length: Approx. 4340 mm (170.9 in) for saloon Width: Approx. 1675 mm (65.9 in) for saloon Height: Approx. 1380 mm (54.3 in) for saloon Weights Curb Weight Approx: 1150-1350 kg (2535-2976 lbs) depending on model and equipment Gross Vehicle Weight: Varies by model, typically around 1700-1850 kg 🛡️ Safety Features Ratings Crash Test History: Early models pre-date modern standardized crash testing, but were designed with safety cage principles. Later models saw improvements. Active Features Braking System: Front ventilated discs, rear solid discs. ABS optional or standard on higher trims/later models. Passive Features Seatbelts: Three-point inertia-reel seatbelts standard, rear lap belts in some early models. Body Structure: Reinforced A-pillars, B-pillars, and side impact protection beams. 💡 Technology Features Infotainment Original System: Period-appropriate Blaupunkt or BMW-branded radios with cassette players. Optional CD players in later years. Driver Assistance Assistance Features: ABS (Anti-lock Braking System) became increasingly common and eventually standard on many models. Otherwise, driver aids were minimal, focusing on the driving experience. Connectivity Connectivity Options: No modern connectivity features such as Bluetooth, USB, or smartphone integration in original spec. Modern head units often offer these as upgrades. 🔧 Maintenance Service Intervals Oil Change Interval Petrol: Typically 7,500-10,000 miles (12,000-16,000 km) or 12 months, consult manual for specific engine. Timing Belt Interval M20: Approx. 30,000-50,000 miles (50,000-80,000 km) or 3-4 years. Critical for M20 engines. Spark Plug Replacement: Varies by plug type, typically 30,000-60,000 miles. Fluid Specifications Engine Oil Spec: API SG/SH, ACEA A2 or similar. Viscosity varies by climate: 10W-40, 15W-40, 5W-40...