Segment:
Compact Executive / Sports Sedan
Reputation:
Renowned for its driving dynamics, handling, and build quality, establishing BMW's reputation for 'The Ultimate Driving Machine'.
Key Competitors:
Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra, Opel Vectra.
Driving Dynamics:
Excellent balance, responsive steering, independent rear suspension, rear-wheel drive.
Engine Performance:
Smooth and potent inline-six engines delivering a refined power delivery.
Build Quality:
Solid construction, durable materials, and excellent fit and finish characteristic of BMW.
Primary Coverage:
Full Service and Repair
Secondary Coverage:
Maintenance, Rebuilding, Refurbishing, Restoration
Estimated Page Count:
Comprehensive (exact count not specified, but described as 'very detailed')
Type:
Service and Repair Manual
Format:
Likely Printed (based on typical manual sales for this era, though digital PDF versions are common now)
Engine:
Complete engine overhaul, diagnosis, repair, tuning, cooling system, lubrication system, fuel injection (Bosch Motronic), emissions control.
Transmission:
Manual and Automatic transmission repair, overhaul, clutch service, driveshaft and differential service.
Brakes:
Hydraulic system, disc brake repair (front and rear), ABS (where applicable for the era), parking brake.
Suspension:
Front and rear suspension systems, strut replacement, shock absorber servicing, spring replacement, control arm bushings, steering components.
Steering:
Power steering system, steering gear, tie rod ends, steering column.
Electrical:
Complete wiring diagrams, battery, charging system (alternator), ignition system, starter motor, lighting, gauges, fuse box, relays, basic diagnostics.
Bodywork:
Body panel removal/installation, doors, windows, sunroof (if equipped), interior trim, bumpers, rust repair considerations.
Routine Maintenance:
Oil and filter changes, air filter replacement, spark plug service, coolant flushing, brake fluid replacement, belt inspection/replacement, battery maintenance.
Troubleshooting:
Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides.
Repair And Rebuild:
Detailed instructions for component disassembly, repair, reassembly, and adjustment of all major vehicle systems.
Performance Tuning:
Information on engine tuning, ignition timing, fuel mixture adjustments for optimal performance.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures.
Digital Format Considerations:
If digital, expect searchable text, high-resolution diagrams, possibly hyperlinked sections. If print, expect clear illustrations and durable paper.
Diagrams And Illustrations:
Typically features detailed exploded views, wiring diagrams, and step-by-step illustrations specific to the E30 chassis.
Binding:
Likely perfect-bound or saddle-stitched for printed versions, designed for workshop durability.
Paper Quality:
Often printed on high-quality, semi-gloss paper to protect against workshop grime and for clear reproduction of diagrams.
Engine Code:
M20B27 (detuned for 325 models) / M20B25 (in some markets/later E30s, though 1984 likely M20B27 for 325e, M20B25 for 325is often with higher output tuning)
Displacement:
2.7 Liters (M20B27), 2.5 Liters (M20B25)
Configuration:
Inline 6-cylinder, SOHC (Single Overhead Camshaft)
Horsepower 325E:
Approx. 121 hp @ 4800 rpm (with 'Eta' engine for economy)
Torque 325E:
Approx. 170 lb-ft @ 2400 rpm
Horsepower 325Is:
Approx. 168-170 hp @ 5800-6000 rpm (M20B25, higher compression/performance tune)
Torque 325Is:
Approx. 164-167 lb-ft @ 4300-4750 rpm
System:
Bosch Motronic Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Premium Gasoline (91+ Octane)
ECU Type:
Bosch Motronic ECU, controlling fuel injection and ignition timing.
Type:
4-speed Getrag Manual (e.g., 260/5 for 325i/is)
Type:
3-speed ZF Automatic
Clutch:
Hydraulically operated single-plate dry clutch.
Differential:
Open differential (standard). Limited-slip differential (LSD) was a common factory option or dealer upgrade for 325is.
Manual Transmission Fluid:
BMW Hi-Performance Gear Oil (e.g., SAE 75W-90 GL-5)
Automatic Transmission Fluid:
Dexron-III / Mercon ATF
Length:
Approx. 170.5 inches (4330 mm)
Width:
Approx. 67.3 inches (1710 mm)
Height:
Approx. 54.9 inches (1395 mm)
Wheelbase:
Approx. 101.2 inches (2570 mm)
Curb Weight:
Approx. 2800-3000 lbs (1270-1360 kg), varies by model and options.
Gross Vehicle Weight Rating:
Varies by model, typically around 3700 lbs (1680 kg).
Trunk Capacity:
Approx. 16.4 cu ft (464 liters)
Crash Test Results:
No standardized crash test ratings like NHTSA/IIHS in the same format as today. E30 chassis known for robust safety cell for its era.
ABS:
Anti-lock Braking System (ABS) was available as an option, particularly on higher-trim models like the 325is.
Traction Control:
Not typically equipped on 1984 models.
Seatbelts:
3-point front seatbelts, 2-point rear seatbelts (later models featured 3-point rear).
Airbags:
No airbags equipped on 1984 models.
Body Construction:
Unitized body construction with strategically placed crumple zones.
Audio System:
Original factory radio units (e.g., BMW Bavaria C) with cassette player. Often upgraded by owners.
Speakers:
Typically door-mounted and rear parcel shelf speakers.
Cruise Control:
Available as an option on many models.
Diagnostic Ports:
OBD I diagnostic connector, typically located under the hood or in the engine bay. Manual will detail diagnostic procedures for this system.
Oil Change Interval:
Typically every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions. Consult manual for specific recommendations.
Coolant Flush Interval:
Every 2-3 years or 30,000 miles (48,000 km).
Transmission Fluid Interval:
Manual: Typically no specified interval, but inspection and drain/fill every 60,000 miles (96,000 km) is good practice. Automatic: Every 30,000-50,000 miles (48,000-80,000 km).
Engine Oil:
10W-40 or 20W-50 Synthetic or Semi-Synthetic (check owner's manual or specific engine temp recommendations). Capacity: Approx. 4.5 Liters (4.8 US Quarts) with filter.
Coolant:
BMW Blue Coolant (G48) or equivalent OAT/HOAT antifreeze mixed 50/50 with distilled water. Capacity: Approx. 7.0 Liters (7.4 US Quarts).
Brake Fluid:
DOT 3 or DOT 4 Non-Silicone Based Brake Fluid.
Fuel Lines:
Cracking and degradation of original fuel lines, especially at the fuel filter connections.
Rubber Bushings:
Wear and deterioration of suspension and drivetrain bushings (e.g., control arm bushings, subframe bushings, trailing arm bushings) leading to play and poor handling.
Radiator And Hoses:
Original plastic radiator end tanks can become brittle; rubber hoses are prone to swelling and cracking over time.
Heater Core:
Leaking heater cores are a common E30 issue, often requiring dashboard removal for replacement.
Oil Leaks:
Valve cover gaskets, oil pan gaskets, and front crankshaft seals are common sources of oil leaks.
Dashboard Cracking:
The dashboard material can become brittle and crack due to sun exposure over many years.
Bmw Legacy:
BMW's storied history of building driver-focused, high-performance vehicles.
E30 Introduction:
The E30 chassis succeeded the E21 3 Series and was produced from 1982 to 1994. It marked a significant step in refinement and performance for the 3 Series line.
325I 325Is Introduction:
The 325i and 325is models were introduced to offer more powerful engines, with the 'is' often signifying sportier suspension and aerodynamic enhancements.
Manufacturing Locations:
Primarily Dingolfing, Germany. Also produced in other BMW facilities and under license in various countries.
Sales Performance:
The E30 3 Series was a commercial success globally, solidifying BMW's market position.
