🏷️ Basic Information Identification Make: BMW Model: 6 Series (E24) Sub Models Covered: 633CSi, 635CSi, M6 Production Years Covered: 1983, 1984, 1985, 1986, 1987, 1988, 1989 Generation Chassis Code: E24 Codes Engine Code 633Csi: M30B32 (3.2L) Engine Code 635Csi: M30B34 (3.4L) Engine Code M6: S38B35 (3.5L) 👋 Introduction Market Position Positioning: Luxury Grand Tourer, known for its elegant design, powerful straight-six engines, and driver-focused experience. Competed with models like Mercedes-Benz SEC coupe. Competitive Analysis Competitors: Mercedes-Benz SEC Coupe, Jaguar XJ-S, Maserati Ghibli II, Porsche 928 Key Features Design Philosophy: Bangle-designed 'shark nose' aesthetic, focus on driver engagement, high-quality interior appointments Performance Variants: The M6 variant, powered by the S38 engine derived from the M1 supercar, represented the pinnacle of performance for the E24 generation. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive workshop service and repair Secondary Coverage: Maintenance, diagnostics, troubleshooting, wiring diagrams Page Count Estimated Page Count: Varies by specific BMW official manual source, typically 1000+ pages for full workshop coverage Manual Type Type: Workshop Manual / Service Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine mechanicals (M30/S38), lubrication, cooling, fuel injection (L-Jetronic/Motronic), ignition, exhaust, manual transmission, automatic transmission Chassis: Suspension (front/rear), steering, brakes (including ABS), driveline, wheels, tires Electrical: Complete wiring diagrams, lighting, instrumentation, charging system, starting system, accessories, airbag system Body: Body construction, interior trim, exterior components, climate control (heating and air conditioning) Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspections Engine Repairs: Cylinder head removal/installation, valvetrain service, camshaft timing, piston/ring replacement, crankshaft service, engine rebuild procedures Transmission Service: Manual transmission overhaul, automatic transmission service and repair, clutch replacement, driveshaft and differential service Brake System Repair: Brake pad/rotor replacement, caliper service, ABS system diagnostics and repair Electrical Troubleshooting: Wiring diagram interpretation, component testing, diagnostic procedures for electrical faults Technical Depth Depth: Comprehensive, suitable for professional technicians and advanced DIY enthusiasts. Covers detailed specifications, diagnostic flowcharts, torque values, and step-by-step repair instructions. 📊 Manual Specifications File Format Format: PDF Searchability: Searchable text (OCR'd content) Print Quality Quality: High-resolution, printable pages Binding Type Binding: Digital Download (N/A) Paper Type Paper: Digital Download (N/A) ⚙️ Engine Specifications Primary Engine Engine Family: BMW M30 Straight-Six Engine Code 633Csi Details: 3.2 Liters (3210 cc), M30B32, 197 hp @ 5500 rpm, 285 Nm (210 lb-ft) @ 4000 rpm Engine Code 635Csi Details: 3.4 Liters (3430 cc), M30B34, 218 hp @ 5800 rpm, 310 Nm (229 lb-ft) @ 4000 rpm (European spec); 182 hp @ 5400 rpm, 289 Nm (213 lb-ft) @ 3500 rpm (US spec) Engine Code M6 Details: 3.5 Liters (3453 cc), S38B35, 256 hp @ 6300 rpm, 333 Nm (246 lb-ft) @ 4500 rpm (European spec); 215 hp @ 5700 rpm, 305 Nm (225 lb-ft) @ 4500 rpm (US spec) Performance Compression Ratio 635Csi: 8.0:1 (Euro), 9.0:1 (US) Compression Ratio M6: 10.5:1 Fuel System Injection System: Bosch L-Jetronic (early models), Bosch Motronic (later models), Bosch D-Jetronic (M6) Fuel Type: Unleaded Premium Gasoline Engine Internals Valvetrain: Single Overhead Camshaft (SOHC), 2 valves per cylinder Cooling System: Water-cooled, thermostatically controlled fan 🔧 Transmission Standard 633Csi Standard: 4-speed manual (Getrag 265) 635Csi Standard: 5-speed manual (Getrag 265/5, dogleg first gear in some markets) Optional Optional Transmission: ZF 3HP22 3-speed automatic (available on most models) Features M6 Transmission: 5-speed manual (Getrag 280/5, dogleg first gear) Clutch Type: Hydraulically operated single dry plate clutch Fluid Specifications Manual Transmission Fluid: BMW MTF LT-2 or equivalent (e.g., Pentosin G50) Automatic Transmission Fluid: Dexron III or equivalent 📐 Dimensions Exterior Length: Approx. 4,735 mm (186.4 in) Width: Approx. 1,775 mm (69.9 in) Height: Approx. 1,380 mm (54.3 in) Wheelbase: Approx. 2,790 mm (110.0 in) Weights Curb Weight 635Csi Manual: Approx. 1,500 - 1,600 kg (3,300 - 3,500 lbs) Curb Weight M6: Approx. 1,650 kg (3,638 lbs) Gross Vehicle Weight: Varies by model and options 🛡️ Safety Features Ratings Crash Testing: No specific official crash test ratings publicly available from modern standards bodies for this era, but designed with BMW's established safety principles. Active Features ABS: Anti-lock Braking System (ABS) available as an option or standard on later/higher trims Suspension: Independent suspension front and rear for improved handling and stability Passive Features Airbags: Driver airbag became available in later model years (1987+), not standard across all configurations. Seatbelts: Three-point seatbelts, front and rear 💡 Technology Features Infotainment Audio System: Factory premium sound systems (e.g., Blaupunkt, Becker) with cassette players, often with optional CD changers in later models. Climate Control: Manual or optional automatic climate control (ECC - Electronic Climate Control) Driver Assistance Cruise Control: Standard on most models Connectivity Connectivity Features: Limited by era; typically no integrated Bluetooth or smartphone connectivity. Auxiliary input for audio may be present on later units. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 - 10,000...