🏷️ Basic Information Identification Make: BMW Model: M635CSi Model Code: E24 Production Years Covered: 1983-1989 Codes Engine Code: M88/3 (or S38B35 in later iterations) 👋 Introduction Market Position Classification: High-performance grand tourer coupe Era Context: Iconic model of the 1980s, representing BMW's engineering prowess in luxury performance Competitive Analysis Key Competitors: Porsche 911, Jaguar XJ-S, Ferrari 400i/412 Key Features Performance Orientation: M-tuned engine, advanced chassis dynamics, aerodynamic styling Luxury Appointments: Leather interior, advanced (for the era) features, comfortable ride for long distances 📋 Manual Details Coverage Areas Primary Coverage: Workshop Repair and Service Geographic Coverage: Global (primarily European and North American specifications) Page Count Estimated Page Count: 700-900 (typical for comprehensive workshop manuals of this era, actual may vary based on specific edition) Manual Type Manual Type: Workshop Service Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Engine: M88/3 (3.5L Inline-6), M30 (early 635CSi models before M6 designation) Fuel System: Bosch L-Jetronic fuel injection, fuel pump, injectors, pressure regulator, diagnosis Ignition System: Electronic ignition, coil, spark plugs, timing Transmission: Getrag 265 5-speed manual, ZF 4HP22 4-speed automatic (overhaul and service) Drivetrain: Rear-wheel drive, driveshaft, differential, axles Suspension: Front McPherson struts, rear semi-trailing arms, springs, dampers, bushings, alignment Brakes: Front and rear disc brakes, ABS (Anti-lock Braking System), hydraulic system, calipers, pads, rotors Steering: Power assisted steering system, steering rack, pump, fluid Electrical System: Wiring diagrams, battery, alternator, starter, fuses, relays, lighting, instrumentation, ECU diagnosis Bodywork: Exterior trim, bumpers, doors, hood, trunk, glass, chassis repair HVAC: Heating, ventilation, and air conditioning (if equipped) Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection Troubleshooting: Diagnostic procedures for common and uncommon faults, symptom-based troubleshooting guides Engine Repair: Top-end overhaul, bottom-end rebuild, component replacement (pistons, rings, bearings, valves) Transmission Repair: Clutch replacement (manual), torque converter service (automatic), internal component repair Brake System Repair: Brake pad/shoe replacement, rotor turning/replacement, caliper overhaul, brake line replacement, ABS bleeding Suspension And Steering Repair: Component replacement (shocks, struts, ball joints, tie rods), power steering pump and rack repair Electrical Troubleshooting: Use of wiring diagrams, testing components, diagnosing electrical faults Body And Interior Repair: Panel alignment, door mechanism repair, glass replacement Specifications And Data: Torque values, clearances, fluid capacities, electrical values Technical Depth Depth: Comprehensive (covers basic maintenance to complete engine and transmission overhauls) Diagnostics: Detailed diagnostic procedures for engine management, fuel, and ignition systems Rebuild Procedures: Step-by-step instructions for engine and transmission rebuilds 📊 Manual Specifications File Format File Type: PDF Searchable Text: Typically Yes (depending on the source scan quality) Printability: Printable (allows users to print specific sections or the entire manual) Print Quality Image Resolution: High-resolution scans for clarity of diagrams and text (variable based on original source) Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline-6 Engine Displacement: 3453 cc (3.5 Liters) Engine Code M88: M88/3 Engine Code S38: S38B35 (later models, slight variations) Performance Horsepower: 286 PS (282 hp) at 6500 rpm (M88/3) Torque: 333 Nm (246 lb-ft) at 5000 rpm (M88/3) Redline: 7000 rpm Fuel System Fuel Injection Type: Bosch L-Jetronic Electronic Fuel Injection Fuel Type: Premium Unleaded Gasoline (91+ Octane) Compression Ratio: 10.5:1 🔧 Transmission Standard Standard Transmission: Getrag 265 5-speed Manual Transmission Optional Optional Transmission: ZF 4HP22 4-speed Automatic Transmission Features Manual Gear Ratios: 1st: 4.00, 2nd: 2.33, 3rd: 1.50, 4th: 1.17, 5th: 0.83 (Approximate, may vary by VIN) Automatic Features: Lock-up torque converter, Sport mode Final Drive Ratio: 3.25:1 (Standard, may vary with transmission and market) 📐 Dimensions Exterior Length: 4764 mm (187.6 in) Width: 1775 mm (69.9 in) Height: 1380 mm (54.3 in) Wheelbase: 2574 mm (101.3 in) Front Track: 1440 mm (56.7 in) Rear Track: 1470 mm (57.9 in) Weights Curb Weight: Approx. 1630-1700 kg (3594-3748 lbs) depending on transmission and options Gross Vehicle Weight Rating: Approx. 2080 kg (4586 lbs) 🛡️ Safety Features Ratings Safety Ratings Era: As per 1980s standards; detailed crash test data specific to modern standards is limited for this era. Active Features ABS: Anti-lock Braking System (ABS) - Standard on most M635CSi models Limited Slip Differential: Optional or standard depending on market and year (e.g., 25% LSD) Passive Features Seatbelts: Three-point inertia reel seatbelts (front), lap belts (rear) Body Construction: Reinforced safety cell, crumple zones Headrests: Front and rear headrests 💡 Technology Features Infotainment Audio System: Optional premium sound systems (e.g., Blaupunkt, Nakamichi) with cassette player Climate Control: Manual or optional automatic climate control Driver Assistance ABS System: Standard Anti-lock Braking System (ABS) Connectivity Connectivity Features: Limited by era; primarily analog systems. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-10,000 miles (12,000-16,000 km) or annually, refer to manual for exact schedule Coolant Flush Interval: Every 2-3 years or as recommended Brake Fluid Flush Interval:...