Segment:
Luxury Grand Tourer Coupe
Brand Perception:
Performance, luxury, engineering excellence, driver engagement
Key Competitors:
Mercedes-Benz SEC, Porsche 928, Jaguar XJ-S
Design Philosophy:
Long hood, short deck proportions, elegant and timeless styling, driver-focused cockpit
Engineering Highlights:
Inline-six engines, rear-wheel drive, sophisticated suspension, advanced (for its era) electronics
Target Audience:
BMW E24 owners, independent repair shops, classic car enthusiasts, DIY mechanics
Benefit:
Empowers owners to maintain and repair their vehicles with confidence, saving on dealership costs.
Engine:
Complete overhaul, diagnostics, tuning, lubrication, cooling, fuel injection (L-Jetronic, Motronic), exhaust
Transmission:
Manual and Automatic (Getrag 5-speed, ZF 4-speed/3-speed) repair, overhaul, clutch, driveshaft, differential
Brakes:
Front/rear disc brakes, ABS (where applicable), hydraulic system, parking brake
Suspension:
Front struts, rear independent suspension, bushings, shock absorbers, springs, anti-roll bars
Steering:
Power steering system, steering rack, tie rods
Electrical:
Wiring diagrams, battery, alternator, starter, ignition system, lighting, instrumentation, fuses, relays, ECU diagnostics
Bodywork:
Body panel removal/installation, doors, hood, trunk, bumpers, glass, seals, rust repair procedures
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system operation, repair, and refrigerant handling
Interior:
Dashboard removal, seats, trim panels, interior lighting
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks, tune-ups
Repair:
Component replacement, system diagnostics, troubleshooting, minor and major repairs
Overhaul:
Engine rebuild, transmission overhaul, differential rebuild
Adjustment:
Valve adjustments, idle speed settings, brake adjustments
Troubleshooting:
Diagnostic procedures for common and uncommon issues, fault code interpretation (where applicable)
Depth:
Comprehensive from basic maintenance to complete engine and transmission rebuilds
Diagnostics:
Detailed diagnostic flowcharts and symptom-based troubleshooting
Specifications:
Torque values, clearances, fluid capacities, electrical resistance, pressure readings
Diagrams:
Exploded views, wiring diagrams, hydraulic schematics, system layouts
Photography:
Step-by-step illustrations and potentially photos of procedures
Engine Code 633Csi:
M30B32 (3.2L Inline-6)
Engine Code 635Csi:
M30B34 (3.4L Inline-6)
Engine Code M6:
S38B35 (3.5L Inline-6, DOHC, 24 valves)
Horsepower 633Csi:
Approx. 197 hp (DIN) / 181 hp (SAE)
Torque 633Csi:
Approx. 285 Nm (210 lb-ft)
Horsepower 635Csi:
Approx. 218 hp (DIN) / 204 hp (SAE)
Torque 635Csi:
Approx. 310 Nm (229 lb-ft)
Horsepower M6:
Approx. 256 hp (DIN) / 282 hp (US Spec)
Torque M6:
Approx. 333 Nm (246 lb-ft) / 345 Nm (US Spec)
Injection System 633Csi 635Csi:
Bosch L-Jetronic (later models may use Motronic)
Injection System M6:
Bosch Motronic ML-1.3
Fuel Requirement:
Premium Unleaded Gasoline (91+ Octane)
Crash Safety Era Standard:
Designed to meet safety standards of its production era, with a strong unibody structure.
ABS:
Optional Anti-lock Braking System (ABS) available on later models and M6
Suspension Stability:
Independent suspension contributes to stable handling
Seatbelts:
3-point front seatbelts, rear lap belts
Body Structure:
Reinforced safety cage, crumple zones
Steering Column:
Collapsible steering column
Oil Change Interval:
Typically every 5,000-7,500 miles or 6-12 months, depending on driving conditions and oil used.
Major Service Intervals:
Spark plugs, ignition wires, coolant, brake fluid typically recommended every 2-4 years or 30,000 miles.
Engine Oil Type:
SAE 15W-50 or 20W-50 recommended for older M30 engines, consult manual for specific viscosity and API rating (e.g., API SG or higher)
Coolant Type:
BMW coolant or equivalent, mixed with distilled water (50/50 ratio)
Transmission Fluid Manual:
API GL-4 or GL-5 gear oil, SAE 75W-90 or 80W-90 (specific BMW part number recommended)
Transmission Fluid Automatic:
ATF Dexron III or equivalent (specific BMW part number recommended)
Engine M30:
Head gasket leaks, oil pan gasket leaks, valve stem seals (oil consumption), timing chain tensioner wear, fuel injector issues (L-Jetronic).
Electrical System:
Wire harness degradation (especially around engine bay), faulty voltage regulators, weak grounds, perished connectors.
Suspension Bushings:
Wear in control arm bushings, trailing arm bushings, and sway bar links, leading to sloppy handling.
Rust:
Common areas include wheel arches, rocker panels, battery tray, and trunk floor.
Cooling System:
Radiator leaks, water pump failure, thermostat issues, cracked coolant hoses.
Oil Filter:
Commonly Mann-Filter W100/1, Mahle OX1, Bosch 0431000010 (verify for specific model year/engine)
Air Filter:
Commonly Mann-Filter C33157, Mahle LX42, Bosch 1457433713 (verify for specific model year/engine)
Bmw Philosophy:
The Ultimate Driving Machine - emphasis on performance, handling, and driver connection.
E24 Introduction:
Introduced in 1976 as a replacement for the E9 coupe, the E24 was BMW's flagship luxury coupe for over a decade.
Facelift And Updates:
Received styling updates (e.g., slimmer bumpers, revised grille) and technical enhancements throughout its production run.
M6 Development:
The M6 (or M635CSi in Europe) was developed by BMW Motorsport, featuring a more powerful engine and sport-tuned chassis.
Production Period:
1976–1989
Manufacturing Location:
Dingolfing, Germany
