Positioning:
The ultimate reference for maintaining and repairing the homologation special BMW E30 M3.
Comparative Value:
Essential for preserving the value and performance of a highly collectible and performance-oriented vehicle.
Features:
Detailed procedures, OEM specifications, diagnostic flowcharts, wiring diagrams.
Coverage:
Full service, repair, and workshop procedures for the BMW E30 M3.
Pages:
Estimated 800-1200 (typical for comprehensive workshop manuals of this era, specific number not provided but implied by scope).
Type:
Service and Repair Workshop Manual
Format:
Likely digital (PDF) given modern sales, but originally printed.
Engine:
S14 2.3L inline-4, including tuning, diagnostics, rebuilds, fuel injection (DME), ignition.
Transmission:
Getrag 265 5-speed manual, clutch system, driveline, differential.
Brakes:
Front and rear disc brakes, ABS system (if equipped), hydraulic systems, caliper overhauls.
Suspension:
Front strut assemblies, rear semi-trailing arms, bushings, dampers, springs, anti-roll bars.
Electrical:
Wiring diagrams, component testing, charging system, starting system, lighting, instrumentation.
Body:
Body panel repair, chassis alignment, seals, glass, interior trim.
HVAC:
Heating, ventilation, and air conditioning systems.
Steering:
Power steering system, steering rack, column.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug service, fluid checks.
Troubleshooting:
Diagnostic procedures for common and uncommon issues, fault code interpretation (DME).
Repair:
Step-by-step repair instructions for all major mechanical and electrical components.
Rebuilds:
Detailed engine and transmission rebuild procedures, including specifications.
Diagnostics:
Electrical diagnostics, fuel system diagnostics, engine performance diagnostics.
Depth:
Comprehensive, covering everything from basic tune-ups to complete engine and chassis overhauls.
Target Audience:
Professional mechanics, experienced DIY enthusiasts.
Searchable:
Yes (if properly digitized PDF)
Quality:
High-resolution, clear diagrams and text (for digital versions).
Binding:
N/A (for digital), typically professional bound for print.
Paper:
N/A (for digital), typically high-quality matte paper for print.
Configuration:
Inline 4-cylinder, DOHC, 16 valves
Displacement:
2302 cc (2.3 Liters)
Bore X Stroke:
91 mm x 87 mm
Compression Ratio:
10.5:1
Horsepower:
192 hp @ 6,900 rpm (US Spec)
Torque:
230 Nm (169 lb-ft) @ 4,750 rpm (US Spec)
Fuel Delivery:
Bosch L-Jetronic fuel injection
Fuel Type:
Unleaded Premium (91+ octane)
Ignition Type:
Electronic ignition (Bosch Motronic)
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 equivalent) mixed 50/50 with distilled water
Oil Type:
SAE 20W-50 (typically, check manual for exact spec)
Oil Capacity:
Approx. 5.5 Liters (with filter)
Transmission Type:
Getrag 265 5-speed Manual
Gear Ratios:
Provided within manual (specific ratios vary slightly by application, typically close-ratio for M3)
Clutch:
Hydraulically operated single-plate dry clutch
Drive Layout:
Rear-wheel drive (RWD)
Differential:
Limited-slip differential (LSD) standard
Gearbox Oil Type:
GL-4 or GL-5 gear oil (e.g., Castrol TWS Syntran 75W-90 or equivalent, check manual)
Differential Oil Type:
SAE 75W-90 GL-5 (typically, check manual)
Crash Test Results:
No specific ratings available for 1984 models as per modern standards. Known for robust build quality for its era.
ABS:
Optional on early models, standard on later versions. Manual will cover its function and repair.
Brake System Type:
4-wheel disc brakes (ventilated front)
Seatbelts:
3-point front and rear seatbelts
Chassis Construction:
Reinforced steel unibody construction
Radio:
Factory fitted BMW Bavaria or similar premium sound systems of the era, often with cassette player.
Dashboard:
Driver-focused analog gauges, including oil temperature and pressure (M-specific).
ABS:
Available as an option, as mentioned in safety.
Traction Control:
Not generally available on the 1984 model.
Connectivity Features:
None by modern standards; focused on pure driving experience.
Oil Change Interval:
Typically every 5,000 - 7,500 miles or annually (check manual for exact recommendation based on driving conditions).
Spark Plug Replacement:
Every 20,000 - 30,000 miles (depending on spark plug type).
Timing Belt Replacement:
N/A (S14 engine uses a timing chain).
Brake Fluid Flush:
Every 2 years
Coolant Capacity:
Approx. 8.0 Liters
Power Steering Fluid:
BMW Power Steering Fluid or ATF Dexron II/III
Engine Mounts:
Prone to wear and tearing, leading to vibration.
Valve Stem Seals:
Can degrade over time, causing oil consumption and blue smoke.
Rear Wheel Arches:
Susceptible to rust.
Rubber Bushings:
Suspension and subframe bushings degrade with age, affecting handling.
Fuel Pump Reliability:
Older fuel pumps can become a point of failure.
Bmw Motorsport Division:
The E30 M3 represents a pivotal moment in BMW M GmbH's history, born from motorsport homologation requirements for Group A racing.
E30 Platform:
Based on the popular E30 3 Series chassis, but significantly re-engineered for performance.
Design Philosophy:
Aerodynamic body kit, wider track, bespoke suspension components, and the high-revving S14 engine.
Evolution From 1984:
The 1984 model is the original launch version, preceding later variants like the Evolution models (Evo I, Evo II) and Sport Evolution.
Production Start Year:
1986 (though the manual is for the conceptual 1984 year, indicating a pre-production or early documentation).
Production Location:
Munich, Germany
