🏷️ Basic Information Identification Make: BMW Model: 6 Series (E24) Sub Model: 633CSi, 635CSi, M6 Model Years Covered: 1983-1989 👋 Introduction Market Position Market Position: Luxury Grand Tourer (GT), sporty coupe, positioned as a premium performance vehicle in its era. Competitive Analysis Competitive Analysis: Competed against rivals like the Mercedes-Benz SEC Coupe, Jaguar XJ-S, and Porsche 928. Known for its sophisticated engineering, powerful inline-six engines, and driver-focused cockpit. Key Features Key Features: Sleek Bertone-designed body, rear-wheel drive, independent suspension, powerful M30 and S38 engines, luxurious interior appointments, advanced (for its time) electronics. 📋 Manual Details Coverage Areas Coverage Areas: All diagnostic and repair procedures, maintenance, rebuilding, refurbishing, restoration Page Count Page Count: N/A (Digital Download, printable pages) Manual Type Manual Type: Service Repair Workshop Manual Language Language: English Format Format: PDF Delivery Method Delivery Method: Instant download via email link. Usage Rights Usage Rights: Unlimited usage, printable for personal use. 📖 Manual Coverage Systems Covered Systems Covered: Engine (M30, S38), Fuel System, Ignition System, Cooling System, Lubrication System, Exhaust System, Clutch, Manual Transmission, Automatic Transmission (optional), Driveshaft, Differential, Suspension (Front & Rear), Steering System, Brakes (Front & Rear Discs), Electrical System, Lighting, Instrumentation, Bodywork, Interior Trim, Climate Control Procedures Included Procedures Included: Routine maintenance, troubleshooting, diagnostics, repair, overhaul, rebuilding, component replacement, electrical system tracing, wiring diagrams, torque specifications, alignment procedures, brake bleeding, engine tuning, clutch adjustment Technical Depth Technical Depth: Comprehensive A-Z coverage, suitable for professional technicians and DIY enthusiasts, detailed diagnostic flowcharts Specific Repair Examples Specific Repair Examples: Engine rebuild procedures, fuel injection system diagnostics and repair, transmission overhaul, brake system overhaul (including ABS system), suspension component replacement (control arms, ball joints, struts), steering rack repair, electrical troubleshooting using wiring diagrams, body panel alignment and repair. 📊 Manual Specifications File Format File Format: Adobe PDF Print Quality Print Quality: High-resolution, printable pages with clear diagrams Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Searchability: Likely includes searchable text within the PDF for quick information retrieval. ⚙️ Engine Specifications Primary Engine Primary Engine 633Csi: 3.2L (3210cc) M30B32 Inline-6 Primary Engine 635Csi: 3.5L (3430cc) M30B34 Inline-6 Primary Engine M6: 3.5L (3453cc) S38B35 Inline-6 (Slightly different specification to 635CSi) Performance Horsepower 633Csi: Approx. 197 hp @ 5500 rpm (Euro spec) Horsepower 635Csi: Approx. 218 hp @ 5200 rpm (Euro spec, 1982-1987); Approx. 208 hp (US spec, 1984-1989) Horsepower M6: Approx. 256 hp @ 6500 rpm (US spec, 1987-1989) Torque 635Csi: Approx. 224 lb-ft @ 3500 rpm (Euro spec, 1982-1987) Torque M6: Approx. 243 lb-ft @ 4500 rpm (US spec, 1987-1989) Fuel System Fuel System: Bosch L-Jetronic or Motronic Fuel Injection Fuel Type: Unleaded Gasoline (Premium) Engine Codes Engine Codes: M30B32, M30B34, S38B35 🔧 Transmission Standard Standard Transmission: 4-speed Getrag 265 Manual Transmission (later models offered 5-speed) Optional Optional Transmission: ZF 4HP22 Automatic Transmission Features Clutch Type: Hydraulically Actuated Single Dry Plate Clutch Manual Transmission Gear Ratios Example: 1st: 4.01, 2nd: 2.32, 3rd: 1.40, 4th: 1.00, Rev: 3.53 (Getrag 265, specific ratios may vary by year/model) 📐 Dimensions Exterior Length: Approx. 191.3 in (4859 mm) Width: Approx. 70.5 in (1791 mm) Height: Approx. 53.1 in (1350 mm) Weights Curb Weight: Approx. 3500-3700 lbs (1588-1678 kg), varies by model and options Wheelbase: Approx. 104.4 in (2650 mm) Wheelbase Wheel Bolt Pattern: 5x120mm Wheel Bolt Pattern Wheel Offset Example: ET15 to ET22 (varies by wheel size and model) Tire Sizes Example: 205/70VR14, 225/60VR15, 245/45VR16 (depending on model and year) 🛡️ Safety Features Ratings Safety Ratings: N/A (No standardized crash testing protocols for this era in the same way as modern vehicles) Active Features Active Features: Four-wheel disc brakes with ventilated front rotors, Anti-lock Braking System (ABS) became available on later models. Passive Features Passive Features: Safety cage construction, energy-absorbing steering column, padded interior surfaces, seat belts. 💡 Technology Features Infotainment Infotainment Features: AM/FM Radio with cassette player, optional equalizer and amplifier. Analog gauges for speed, RPM, fuel, temperature, and oil pressure. Driver Assistance Driver Assistance Features: ABS (Anti-lock Braking System) on later models, cruise control. Connectivity Connectivity Features: N/A (Pre-digital era) Comfort Features Comfort Features: Optional electric seats, power windows, power sunroof, automatic climate control, leather upholstery. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles or 12 months (depending on driving conditions and oil quality). Major Tune Up Interval: Every 30,000-60,000 miles (includes spark plugs, fuel filter, air filter, ignition system inspection). Fluid Specifications Engine Oil Type: SAE 20W-50 or 15W-40 (API SG or higher quality, check manual for specific recommendations) Coolant Type: BMW Blue Coolant (Ethylene Glycol based) or equivalent, 50/50 mixture with distilled water. Brake Fluid Type: DOT 3 or DOT 4. Transmission Fluid Manual: GL-4 Gear Oil (SAE 75W-90 or 80W-90, check specific manual) Transmission Fluid Automatic: ATF Dexron III or equivalent. Differential Fluid: GL-5 Gear Oil (SAE 75W-90 or 80W-90). Known Issues...