🏷️ Basic Information Identification Make: BMW Model: 325i Chassis Code: E30 Production Years Covered: 1984, 1985, 1986, 1987, 1988, 1989, 1990 Codes Model Code Variant: E30 325i 👋 Introduction Market Position Segment: Compact Executive Sports Sedan/Coupe Reputation: Known for its engaging driving dynamics, balanced chassis, and robust engineering, the E30 3-Series defined the premium compact sports sedan segment. Competitive Analysis Key Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75 (Milano), Volvo 240, Ford Sierra XR4i. Key Features Driving Dynamics: Rear-wheel drive, near 50/50 weight distribution, independent suspension, responsive steering, offering a pure driving experience. Powertrain Emphasis: Focus on smooth, powerful inline-six engines combined with excellent chassis tuning. 📋 Manual Details Coverage Areas Systems Covered: Engine, Drivetrain, Suspension, Steering, Brakes, Electrical System, Fuel System, Cooling System, Exhaust System, Body and Chassis, Interior, Climate Control, Diagnostic Procedures Page Count Estimated Page Count: Likely 500+ pages (typical for comprehensive workshop manuals of this era) Manual Type Manual Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, cylinder head, block, crankshaft, pistons, connecting rods, valve train, timing, lubrication, cooling system components. Engine Management Electronic: Bosch Motronic fuel injection and ignition systems (e.g., Motronic M1.1/M1.3), sensor functions, ECU diagnostics, wiring diagrams. Drivetrain: Clutch, gearbox (Getrag 260 5-speed manual, ZF 4HP22 4-speed automatic), driveshaft, differential, axle shafts. Suspension Steering: Front McPherson strut, rear semi-trailing arm, springs, shock absorbers, bushings, steering rack, power steering system, alignment specifications. Brakes: Front vented discs, rear solid discs, ABS (Anti-lock Braking System) components and diagnostics (where applicable), brake fluid specifications, bleeding procedures. Electrical System: Battery, alternator, starter motor, lighting systems, fuses, relays, wiring harness routing, component testing, comprehensive wiring diagrams. Procedures Included Maintenance Procedures: Oil and filter changes, spark plug replacement, air filter replacement, fuel filter replacement, coolant flushes, brake pad replacement, belt inspections and replacement. Repair Procedures: Engine rebuilds, transmission overhauls, suspension component replacement, brake system repairs, electrical component troubleshooting and replacement, body panel repairs. Troubleshooting: Diagnostic flowcharts for common drivability issues, starting problems, electrical faults, and performance issues based on symptoms. Specifications Data: Torque values, clearances, fluid capacities, electrical resistance values, diagnostic trouble codes (DTCs), alignment angles. Technical Depth Depth Of Coverage: Comprehensive, from basic routine maintenance to in-depth engine and transmission overhauls, including electrical system diagnostics and troubleshooting. 📊 Manual Specifications File Format PDF Quality: High-resolution scans or digitally created PDF, ensuring clarity of text and diagrams. Searchable text is a strong possibility for professional manuals. Printable Pages: Typically designed to be printable, allowing users to print specific sections or the entire manual. Binding Type Original Binding: Original manuals were typically professionally bound (hardcover or spiral-bound) for durability in workshop environments. Paper Type Original Paper Type: Durable, often glossy or semi-gloss paper to withstand grease and extensive use. ⚙️ Engine Specifications Primary Engine Engine Code: M20B27 (SOHC Inline-6) Engine Type: Naturally Aspirated, Inline 6-Cylinder, SOHC Displacement: 2.7 Liters (2693 cc) Performance Horsepower: 121 hp @ 4800 rpm (US spec 'eta' engine for fuel economy, often detuned for emissions), ~168 hp @ 5500 rpm (Euro spec 'i' version) and ~170 hp for later US 325i (e.g., 1987+ with higher compression and revised Motronic) Torque: 170 lb-ft @ 3000 rpm (US spec 'eta'), ~200 lb-ft @ 4000 rpm (Euro spec 'i') and ~204 lb-ft for later US 325i Fuel System Fuel Delivery: Bosch Motronic electronic fuel injection and ignition system (e.g., Motronic M1.1, M1.3) Fuel Type: Unleaded gasoline (premium recommended) Engine Components Bore X Stroke: 84.0 mm x 81.0 mm Compression Ratio: 9.0:1 (US spec 'eta'), 9.7:1 (US spec 'i' 1987+) 🔧 Transmission Standard Manual Transmission: Getrag 260 5-speed manual Optional Automatic Transmission: ZF 4HP22 4-speed automatic Features Rear Axle Ratio: Typically 3.25:1 (manual), 3.46:1 (automatic) for 325i models. Varies by market and specific model year. 📐 Dimensions Exterior Length: 170.5 inches (4330 mm) Width: 66.5 inches (1690 mm) Height: 54.5 inches (1385 mm) Wheelbase: 104.3 inches (2650 mm) Weights Curb Weight: Approximately 2800-3000 lbs (1270-1360 kg), depending on body style and options. 🛡️ Safety Features Ratings Crash Test Performance: NHTSA ratings were not standardized as they are today. However, the E30 chassis was designed with a robust safety cell, crumple zones, and safety features considered advanced for its time. Active Features ABS: Optional on earlier models, standard on later 325i and M3 models. Passive Features Seat Belts: Three-point retractable front seat belts, lap belts for rear passengers. Steering Column: Collapsible steering column for improved impact protection. 💡 Technology Features Infotainment Audio System: Factory-installed radio/cassette player (e.g., Blaupunkt, Grundig) with optional amplifier and speaker upgrades. Basic analog controls. Driver Assistance ABS: Optional Anti-lock Braking System (ABS) on most models, particularly noticeable in later production years. Diagnostics can be complex. Connectivity Diagnostics Port: On-board diagnostics (OBD) port existed but was not as standardized as modern systems. Manual will detail...