🏷️ Basic Information Identification Make: BMW Model: 3 Series (E30) Production Years Covered: 1985-1990 Codes Chassis Code: E30 👋 Introduction Market Position Vehicle Segment: Compact Executive / Sport Sedan/Coupe Competitive Analysis Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra XR4i, Peugeot 405 Mi16, Volkswagen Passat (B3). Key Features Vehicle Strengths: Renowned for its balanced chassis, engaging driving dynamics (RWD), durable engines (especially M20 and M40), and timeless design. The E30 chassis is a celebrated platform in BMW's history, offering both everyday usability and spirited performance. Manual Value Proposition Manual Benefit: Provides dealership-level repair and maintenance information, empowering owners to perform DIY services, reduce repair costs, and maintain their classic BMW effectively. Offers detailed diagrams and step-by-step instructions essential for restoration and ongoing care. 📋 Manual Details Coverage Areas Models Covered: 316, 316i, 318i (M10 & M40), 318is (M42), 320i, 323i, 325e, 325i (M20), 320is (S14), 324d, 324td (M21) Page Count Total Pages: 1313 Manual Type Type: Factory Service Manual / Workshop Manual / Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Mechanical Systems: Engine (M10, M40, M42, M20, S14, M21 Diesel), Fuel System, Cooling System, Exhaust System, Clutch, Manual Transmission, Automatic Transmission, Driveshaft, Rear Axle, Front Axle, Steering System, Brake System, Suspension Systems (Front & Rear), Wheels & Tires Electrical Systems: Engine Electrical Equipment, Electrical System, Instruments, Lights, Heating and Air Conditioning, Radio and Special Equipment, Wiring Diagrams Body And Interior: Body, Body Equipment, Seats, Hood, Sun Roof, Body Cavity Seating and Under Coating, Interior Trim Components. Chassis And Suspension: Steering and Wheel Alignment, Brakes, Pedals, Wheels and Tires, Integrated Suspension Systems (Front and Rear Axles, Control Arms, Springs, Shock Absorbers, Stabilizer Bars). Powertrain Components: Clutch, Manual Transmission, Automatic Transmission, Gear Shift Mechanism, Propeller Shaft, Transfer Box (if applicable to specific drivetrain), Front Axle, Rear Axle. Procedures Included Maintenance Procedures: General Maintenance, Scheduled Service Intervals, Fluid Checks and Replacements, Filter Replacements, Tune-ups Repair Procedures: Engine Overhaul, Transmission Rebuild, Brake System Repair, Suspension Component Replacement, Electrical Diagnosis and Repair, Body Panel Repair, Interior Component Repair Diagnostic Procedures: Troubleshooting Guides, Diagnostic Flowcharts, Electrical System Diagnostics Electrical Diagnostics: Comprehensive electrical system diagnosis, including wiring diagrams, troubleshooting for starting, charging, lighting, ignition, fuel injection, and accessory systems. Body Repair: Procedures for body panel removal and installation, collision repair guidelines, rust prevention, and undercoating application. Technical Depth Depth: Comprehensive (covering routine maintenance to complete engine/transmission rebuilds), includes detailed component disassembly and reassembly instructions, specifications, tolerances, and diagnostic procedures. Specifications Data: Includes detailed specifications for all components, torque values, clearances, fluid capacities, diagnostic trouble codes (if applicable), and technical data for engine, transmission, brakes, and suspension. 📊 Manual Specifications File Format File Quality: High-resolution PDF, printable pages, potentially searchable text (depending on original scan quality). Print Quality Print Readability: Designed for clarity with hundreds of original photographs and illustrations. Printable pages allow for in-workshop use. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Families: M10 (4-cylinder), M40 (4-cylinder), M42 (4-cylinder DOHC), M20 (6-cylinder OHC), S14 (4-cylinder DOHC - motorsport derived), M21 (6-cylinder Diesel OHC). Performance Horsepower Range: Approximately 85 hp (316) to 238 hp (325i convertible/special editions with M20). Torque Range: Varies significantly by engine; e.g., M10 1.8L around 96 lb-ft, M20 2.5L around 181 lb-ft. Fuel System Fuel Delivery: Carbureted (early 316) and Fuel Injection (Bosch L-Jetronic, Motronic variations depending on engine and year). Engine Variants Details 316/316I: 1.6L M10 or M40 I4. 318I: 1.8L M10 I4 (early) or 1.8L M40 I4 (later). 318Is: 1.8L M42 DOHC I4 (significant performance upgrade over M10/M40). 320I/323I/325E/325I: 2.0L M20 I6, 2.3L M20 I6, 2.7L M20 'Eta' I6, 2.5L M20 I6. Known for smooth operation and good torque. 320Is: 2.3L S14 I4 DOHC (derived from the M10 block, motorsport engine used in E30 M3, tuned for street use). 324D/324Td: 2.4L M21 OHC Inline-6 TurboDiesel (324td) and Naturally Aspirated Diesel (324d). Known for durability and fuel economy, but less performance-oriented. 325E: 2.7L M20 'Eta' engine, designed for fuel efficiency and low-end torque, detuned from the 2.5L M20 for broader torque band. 🔧 Transmission Standard Manual Transmission: 4-speed and 5-speed Getrag manual transmissions common across most models. Optional Automatic Transmission: ZF 3HP22 (3-speed) or ZF 4HP22 (4-speed) automatic transmissions available on most models. Features Clutch Type: Single dry plate clutch (hydraulic actuation). 📐 Dimensions Exterior Length: Approx. 4340-4420 mm (Sedan/Coupe) Width: Approx. 1670-1700 mm Height: Approx. 1370-1415 mm Weights Curb Weight: Approx. 1150-1350 kg depending on model and engine. Wheelbase: Approx. 2570 mm 🛡️ Safety Features Ratings Crash Test Data: No standardized crash test data from major agencies like NHTSA or IIHS for this era of vehicle as comprehensive as today. However, the E30 chassis was known for its robust safety cell and designed crumple zones for its time. Active Features Braking System:...