🏷️ Basic Information Identification Make: BMW Model: 325i / 325is Year: 1987 Chassis Code: E30 Generation Generation Name: E30 Generation Codes Engine Code Primary: M20B25 Chassis Codes Covered: E30 (specific to 325i/325is models) 👋 Introduction Market Position Market Segment: Premium compact executive sports sedan/coupe Competitive Analysis Key Competitors 1987: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Acura Integra Key Features Driving Dynamics: Renowned for its balanced handling, rear-wheel-drive dynamics, and driver-focused cockpit. Engine Reputation: The M20 straight-six engine is a hallmark of BMW's smooth power delivery and reliability. Build Quality: Exceptional build quality and robust engineering characteristic of BMW's E30 platform. Manual Value Proposition Target Audience: BMW enthusiasts, owners seeking to maintain or restore their E30 325i/325is, DIY mechanics, independent repair shops. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive service, repair, maintenance, and restoration Page Count Estimated Page Count: 1000+ Manual Type Manual Type: Full Service and Repair Manual Language Language: English Format Format: Print / Digital (PDF) - depending on specific product offering 📖 Manual Coverage Systems Covered Powertrain: Engine overhaul, fuel injection (Bosch Motronic), cooling system, exhaust system, engine management Transmission: Manual and Automatic transmission repair, clutch service, driveline components (driveshaft, differential) Suspension Steering: Front and rear suspension components (struts, control arms, bushings), steering rack, power steering system Brakes: Front and rear brake system (discs, calipers, master cylinder), ABS system troubleshooting (if equipped), parking brake Electrical Lighting: Complete wiring diagrams, alternator, starter, battery, lighting systems, fuses, relays, instrument cluster, ignition system Body Chassis: Body panel removal and installation, interior trim, door mechanisms, glass replacement, chassis lubrication Climate Control: Air conditioning system (R12), heating system, ventilation Procedures Included Maintenance: Routine maintenance (oil changes, filter replacements, fluid checks), tune-ups, scheduled servicing Troubleshooting: Systematic diagnostic procedures for common and complex issues, fault code interpretation (where applicable) Repair Rebuild: Detailed step-by-step instructions for component removal, repair, and reinstallation, including engine and transmission rebuilds Restoration: Guidance for refurbishing and restoring original components, specifications for plating and finishes Technical Depth Depth: Extremely detailed, covering all aspects from basic adjustments to complete engine and transmission overhauls. Diagnostic Capabilities: Provides specific diagnostic procedures, likely including troubleshooting trees and component testing methods. Torque Specifications: Includes comprehensive torque specifications for all fasteners and critical components. Wiring Diagrams: Full-color, detailed wiring diagrams for all vehicle systems. 📊 Manual Specifications File Format Digital File Format: PDF (if digital version) Print Quality Print Quality: High-resolution, clear reproductions of original diagrams and text. Binding Type Binding Type: Perfect bound or saddle-stitched (for printed versions). Paper Type Paper Type: Durable, high-quality paper suitable for workshop environments. ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, SOHC Displacement Cc: 2494 Bore X Stroke Mm: 84.0 x 75.0 Compression Ratio: 8.8:1 Horsepower Hp SAE Net: 168 Torque Lb Ft SAE Net: 164 Performance Redline Rpm: 6500 Fuel System Fuel Delivery: Bosch Motronic ML-Jetronic fuel injection Recommended Fuel: Unleaded Premium (91 octane or higher) Engine Management Ignition System: Distributor-based electronic ignition with knock control 🔧 Transmission Standard Transmission Type Standard: Getrag 260 5-speed manual Optional Transmission Type Optional: ZF 4HP22 4-speed automatic Features Clutch Type: Hydraulic single-plate dry clutch Differential: Standard open differential; limited-slip differential (LSD) often an option 📐 Dimensions Exterior Length In: 170.5 Width In: 67.3 Height In: 54.5 Wheelbase In: 101.2 Weights Curb Weight Lbs: ~2900-3050 (depending on body style and options) Gross Vehicle Weight Rating Gvwr Lbs: Approx. 4000 🛡️ Safety Features Ratings NHTSA Crash Test Ratings: N/A (Testing standards and availability differ significantly from modern vehicles) Active Features ABS: Anti-lock Braking System (ABS) available on some models/options Passive Features Seatbelts: 3-point front and rear seat belts Head Restraints: Adjustable front head restraints Structure: Reinforced safety cell, crumple zones (early implementation) 💡 Technology Features Infotainment Audio System: Optional premium sound systems, typically with cassette tape player. Driver Assistance ABS: As mentioned, ABS was an optional system, not standard across all models. Connectivity Early Features: Focus on core driving experience rather than advanced electronics. Limited connectivity by modern standards. 🔧 Maintenance Service Intervals Oil Change Interval Miles: Approximately every 5,000 - 7,500 miles or 6-12 months Spark Plug Replacement Miles: Typically around 30,000 miles, depending on plug type Timing Belt Replacement Miles: Crucial: M20 engines use a timing belt. Replacement interval typically 30,000-40,000 miles or 5 years. Belt failure can cause catastrophic engine damage. Fluid Specifications Engine Oil Type: API SG/SH or higher, SAE 15W-40 or 20W-50 (check manual for specific ambient temperature recommendations) Coolant Type: BMW Blue or compatible ethylene glycol-based coolant, mixed 50/50 with distilled water Brake Fluid Type: DOT 3 or DOT 4 Transmission Fluid Manual: GL-4 gear oil (e.g., 75W-90) Transmission Fluid Automatic: Dexron III (or equivalent ATF, check manual for specific part number) Known Issues Common Wear Items: Control arm bushings, sway bar links, fuel injectors, fuel pump, coolant hoses, heater core, window regulators, odometer gears (plastic)....