🏷️ Basic Information

Make:

BMW

Model:

3 Series

Specific Models Covered:

325, 325e, 325es

Year:

1987

Chassis Code:

E30

👋 Introduction

Historical Context:

The E30 3 Series was a pivotal model for BMW, solidifying its reputation for sporty driving dynamics and build quality in the compact executive sedan segment.

Competitors:

Competed with models like the Mercedes-Benz 190E, Audi 90, and various Japanese luxury sedans of the era.

Driving Dynamics:

Renowned for its balanced chassis, rear-wheel-drive layout, and engaging driving experience.

Design:

Classic BMW design language, characterized by its upright kidney grille and clean lines.

Owner Benefit:

Empowers owners to perform essential maintenance and repairs, saving money and prolonging the life of a classic vehicle.

📋 Manual Details

Overall Coverage:

Comprehensive repair and maintenance for 1987 BMW 325, 325e, and 325es models.

Estimated Page Count:

1000+

Type:

Full Service Repair Manual

Language:

English

Format:

Digital (likely PDF)

📖 Manual Coverage

Engine:

Detailed diagnostics, repair, overhaul, and tuning for the M20 inline-six engines used in these models (2.7L for 325e/es, 2.5L for 325).

Fuel System:

Fuel injection system (Bosch Motronic), fuel pump, injectors, fuel pressure regulator, fuel lines.

Ignition System:

Ignition coil, distributor, spark plugs, ignition timing, electronic control unit (ECU) diagnostics.

Cooling System:

Radiator, water pump, thermostat, coolant hoses, fan clutch, heater core.

Exhaust System:

Exhaust manifolds, catalytic converter, muffler, O2 sensor diagnostics.

Transmission Manual:

Removal, installation, overhaul, clutch replacement, gear selection mechanisms, fluid specifications.

Transmission Automatic:

Removal, installation, hydraulic control, torque converter, shift solenoids, fluid specifications and flushing procedures.

Drivetrain:

Driveshaft, universal joints, differential, axle shafts, wheel bearings.

Suspension:

Front struts, control arms, ball joints, bushings, rear semi-trailing arms, shock absorbers, springs, sway bars.

Steering:

Power steering system, steering rack, tie rods, steering column, alignment procedures.

Brakes:

Front and rear disc brakes, brake calipers, master cylinder, brake lines, ABS system (if equipped), bleeding procedures, pad and rotor replacement.

Electrical System:

Wiring diagrams, battery, alternator, starter motor, fuses, relays, lighting system, gauges, instrument cluster.

Climate Control:

HVAC system, blower motor, evaporator, heater core, AC compressor, refrigerant handling (basic guidelines).

Body And Chassis:

Body panel removal and installation, door mechanisms, window regulators, body sealing, underbody protection.

Interior:

Seat removal, dashboard trim, headliner, carpeting.

Maintenance:

Oil changes, filter replacements, spark plug replacement, coolant flushes, brake fluid changes, belt inspections and replacement, battery maintenance.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon issues, symptom-based troubleshooting charts.

Repair:

Step-by-step repair instructions for all major mechanical and electrical components.

Rebuilding:

Detailed instructions for engine and transmission rebuilding, including specifications and clearances.

Restoration:

Guidance applicable to restoring various components, bodywork, and interior.

Diagnostics:

Diagnostic trouble codes (DTCs) for applicable systems, sensor testing, actuator testing.

Specifications:

Torque specifications for all fasteners, engine clearances, alignment angles, fluid capacities.

Depth:

Extremely detailed, covering everything from basic fluid checks to complete engine and transmission overhauls and complex electrical diagnostics.

📊 Manual Specifications

Digital Format:

Likely PDF; Searchable text and high-resolution images are expected for a comprehensive manual.

Image Quality:

Expect clear, high-resolution diagrams, schematics, and photographs.

Binding:

N/A (Digital Format)

Paper Quality:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Code:

M20B27

Engine Type:

Inline 6-cylinder, SOHC

Displacement:

2.7 Liters (2693 cc)

Bore X Stroke:

84.0 mm x 81.0 mm

Compression Ratio:

8.5:1 (for 325e, designed for torque)

Horsepower:

Approx. 121 hp @ 4800 rpm (325e)

Torque:

Approx. 170 lb-ft @ 3250 rpm (325e)

Engine Code:

M20B25

Engine Type:

Inline 6-cylinder, SOHC

Displacement:

2.5 Liters (2494 cc)

Bore X Stroke:

84.0 mm x 75.0 mm

Compression Ratio:

8.8:1 (for 325, higher performance)

Horsepower:

Approx. 168 hp @ 5800 rpm (325)

Torque:

Approx. 164 lb-ft @ 4300 rpm (325)

Type:

Bosch Motronic electronic fuel injection (EFI)

Recommended Fuel:

Unleaded gasoline, 91 octane (or higher)

🔧 Transmission

Type:

Getrag 260 5-speed manual transmission

Type:

ZF 4HP22 4-speed automatic transmission

Clutch Type:

Hydraulically operated single dry plate clutch

Final Drive Ratio:

Varies by model and transmission, typically 3.25 or 3.46 for 5-speed, 3.25 for automatic.

📐 Dimensions

Length:

Approx. 170.5 inches (4331 mm)

Width:

Approx. 67.3 inches (1709 mm)

Height:

Approx. 54.5 inches (1384 mm)

Length:

Approx. 174.5 inches (4432 mm)

Width:

Approx. 67.3 inches (1709 mm)

Height:

Approx. 55.2 inches (1402 mm)

Curb Weight:

Approx. 2750-3000 lbs (1247-1361 kg), varies by body style and options.

Wheelbase:

Approx. 104.5 inches (2654 mm)

Track Width Front:

Approx. 54.5 inches (1384 mm)

Track Width Rear:

Approx. 55.2 inches (1402 mm)

🛡️ Safety Features

NHTSA Front Impact:

Likely 4-star (based on contemporary standards for similar vehicles, specific rating for this year/model may be hard to find).

ABS:

Anti-lock Braking System (ABS) was optional or standard on some later models/trims.

Airbags:

Driver-side airbag became available as an option towards the end of the E30 generation, but not standard for early 1987 models.

Seatbelts:

Three-point inertia-reel seatbelts.

💡 Technology Features

Head Unit:

Original head units were typically AM/FM radio with cassette player. Aftermarket upgrades are common.

ABS:

As mentioned, ABS was an option on some models.

Bluetooth Connectivity:

Not available in original factory configuration. Requires aftermarket installation.

Instrument Cluster:

Includes speedometer, tachometer, fuel gauge, coolant temperature gauge, and oil pressure light. Odometer issues are prevalent.

🔧 Maintenance

Interval Miles:

7,500 miles or 12 months (synthetic blend)

Interval Km:

12,000 km or 12 months (synthetic blend)

Interval Miles:

30,000 miles (depending on plug type, refer to manual for specific recommendations)

Interval Miles:

Check condition at 30,000 miles, replace as needed (manual specifies inspection).

Type:

API SG or higher, SAE 10W-40 or 15W-50 recommended (refer to manual for seasonal variations).

Capacity Quarts:

5.5 quarts (5.2 liters) with filter change (M20 engines).

Type:

50/50 mixture of BMW antifreeze or equivalent and distilled water.

Type:

DOT 3 or DOT 4 brake fluid.

Type:

API GL-4 SAE 75W-90 synthetic gear oil recommended.

Type:

Dexron II or equivalent ATF.

Engine Oil Leaks:

Valve cover gasket, oil pan gasket, and front/rear main seals are common leak points.

Cooling System:

Plastic expansion tank can become brittle and crack; water pump and thermostat failures.

Suspension Bushings:

Control arm bushings, trailing arm bushings, and sway bar bushings are prone to wear, affecting handling.

Fuel Pump Reliability:

Early models may have weaker fuel pumps; replacement recommended as preventative maintenance.

Heater Core:

Heater core leaks can occur, often leading to coolant in the cabin.

Wiper Motor:

Wiper motor failure can affect the function of the windshield wipers.

Odometer Gears:

Odometer gears in the instrument cluster are a very common failure point, causing the odometer to stop working.

📚 Vehicle History

Bmw Legacy:

BMW has a long history of producing driver-focused performance sedans and coupes, with the 3 Series becoming its most iconic and successful line.

E30 Introduction:

The E30 generation was introduced in 1982 as the successor to the E21 3 Series, featuring a significant redesign and improved engineering.

E30 Lifespan:

Produced from 1982 to 1994 (with significant updates throughout its run).

Manufacturing Location:

Primarily Germany (Munich).

Engine Variants Context:

The 325e/es (eta) models featured a long-stroke, low-revving engine designed for fuel efficiency and torque, while the 325 had the higher-revving M20B25 engine.

🏆 Awards & Recognition

Car And Driver 10Best:

The E30 3 Series, in various configurations including the 325i, was a frequent recipient of Car and Driver's '10Best' list during its production run, underscoring its performance and value.

Driving Enthusiast Magazine:

Consistently praised by enthusiasts and automotive publications for its handling and driver engagement.