🏷️ Basic Information Identification Make: BMW Model: 328i Chassis Code: E30 Model Years Covered: 1987, 1988, 1989, 1990, 1991 Codes Engine Code Primary: M20B27 (E - Economy version, but often referred to colloquially with the 325 models) Engine Code Alternative: M20B25 (for the 325i, often associated with the E30 platform but the 328i designation is less common for North American E30s. Clarification: The 328i nomenclature was more prevalent in European markets or as a specific tuning variant, often referring to the M20B27 engine in a higher state of tune or the M30 sourced engines in later models. For E30 context, it's most likely referring to the 325i's M20B25 engine for US market, or a European market variant. Assuming US market M20B27 for general 328i interpretation). 👋 Introduction Market Position Era: Late 1980s to early 1990s sports sedan and coupe. Target Audience: Enthusiast owners, DIY mechanics, and independent repair shops specializing in classic BMWs. Competitive Analysis Competitors: Mercedes-Benz W201 (190E), Audi 80/90, Alfa Romeo 75, Ford Sierra, Volvo 240 series. Key Features Vehicle Focus: Rear-wheel drive chassis, excellent handling dynamics, driver-focused cockpit, robust engineering. Manual Value: Provides in-depth technical knowledge crucial for maintaining and restoring these increasingly sought-after classic vehicles. 📋 Manual Details Coverage Areas Engine Mechanical: Yes Engine Management And Emissions: Yes Fuel System: Yes Transmission Manual: Yes Transmission Automatic: Yes Drivetrain And Axles: Yes Suspension And Steering: Yes Brakes And Wheel Hubs: Yes Body And Chassis: Yes Electrical System And Diagnostics: Yes HVAC System: Yes Interior And Exterior Trim: Yes Troubleshooting Guides: Yes Page Count Estimated Pages: Hundreds (specific count not provided, but typical for comprehensive manuals) Manual Type Type: Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: M20 inline-six engine: cylinder head, block, crankshaft, pistons, connecting rods, camshaft, valvetrain, lubrication, cooling, fuel injection (Bosch Motronic), ignition, emissions control systems. Transmission Systems: Getrag 260 5-speed manual transmission, ZF 4HP22 4-speed automatic transmission: removal, installation, internal repair, clutch assembly, driveshaft, differential. Electrical Systems: Wiring diagrams, battery, alternator, starter, lighting systems, instrument cluster, power windows, central locking, fuses and relays, diagnostic connectors (OBD I). Braking Systems: Front and rear disc brakes, ABS (Anti-lock Braking System) for applicable models, brake fluid, master cylinder, calipers, rotors, pads, lines. Suspension And Steering: Front MacPherson struts, rear semi-trailing arm suspension, shock absorbers, springs, control arms, ball joints, tie rods, power steering system, steering rack. Procedures Included Maintenance Procedures: Oil changes, filter replacements, spark plug replacement, coolant flushes, brake fluid changes, belt inspections and replacement, tune-ups, pre-delivery inspections. Repair Procedures: Engine overhaul, transmission rebuild, brake component replacement, suspension upgrades, electrical diagnostics and repair, body panel repair, interior component replacement. Troubleshooting: Step-by-step diagnostic procedures for common drivability issues, electrical faults, starting problems, and performance degradation. Technical Depth Depth: Comprehensive: Covers everything from routine maintenance and adjustments to complete engine and transmission rebuilds. Includes detailed diagnostic information and repair specifications. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely searchable text, providing efficient access to information. Print Quality Resolution: High-resolution, suitable for printing individual pages or sections. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Quality: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, SOHC (M20) Displacement Cc: 2693 cc (M20B27 - 'Eta' engine, common in US 325e/328i variants in name) Displacement Cu In: 164.3 cu in (M20B27) Bore X Stroke Mm: 84.0 mm x 81.0 mm (M20B27) Performance Horsepower Hp M20B27 Eta: Approx. 121-124 hp @ 4,800 rpm (US spec 'Eta' engine - torque-focused) Torque Lb Ft M20B27 Eta: Approx. 170-177 lb-ft @ 3,250 rpm (US spec 'Eta' engine) Horsepower Hp M20B25 Variant: Approx. 168-170 hp @ 5,800 rpm (if referring to a potent 325i variant or European '328i' with M20B25 tuned) Torque Lb Ft M20B25 Variant: Approx. 164-167 lb-ft @ 4,000 rpm (if referring to a potent 325i variant or European '328i' with M20B25 tuned) Fuel System Fuel Delivery: Bosch Motronic electronic fuel injection (EFI) Fuel Type: Unleaded gasoline (Premium recommended) Engine Management Ignition System: Distributorless ignition system (DIS) on later models, or distributor-based on earlier variants. 🔧 Transmission Standard Transmission Type Standard: Getrag 260 5-speed manual transmission Optional Transmission Type Optional: ZF 4HP22 4-speed automatic transmission Features Clutch Type: Single dry plate, hydraulic actuation Gear Ratios Manual Example: Typically around 3.72:1 (1st), 2.02:1 (2nd), 1.30:1 (3rd), 1.00:1 (4th), 0.81:1 (5th) - subject to specific model variant. Transmission Fluid Type: MTF LT-2 (Manual) or Dexron III (Automatic) - consult specific manual for exact BMW P/N. 📐 Dimensions Exterior Length Mm: Approx. 4340 mm (Sedan) Width Mm: Approx. 1670 mm Height Mm: Approx. 1380 mm Wheelbase Mm: Approx. 2570 mm Weights Curb Weight Kg: Approx. 1200-1300 kg (depending on body style and options) 🛡️ Safety Features Ratings Crash Test Era: Era-appropriate safety standards; advanced for its time, but not comparable...