🏷️ Basic Information Identification Make: BMW Model: M3 Chassis Code: E30 Year: 1988 Engine Variant Covered: S14 (2.3L) Transmission Types Covered: Getrag 265 (5-speed manual) Codes Vehicle Code: M3 Engine Code: S14 👋 Introduction Market Position Positioning: Iconic performance sedan/coupe, homologation special for racing. Competitive Analysis Competitors: Ford Sierra RS Cosworth, Mercedes-Benz 190E 2.3-16, Alfa Romeo 75 Evoluzione. Key Features Performance Focus: Track-focused engineering, high-revving naturally aspirated engine, balanced chassis. Design Heritage: Motorsport-derived aerodynamics and styling by Paul Bracq. Collectible Status: Highly sought-after collector's car, increasing in value. 📋 Manual Details Coverage Areas Comprehensive Coverage: Yes, covers all models, engines, trim, and transmission types for the 1988 E30 M3. Page Count Estimated Pages: 1000+ Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, cylinder head, block, crankshaft, pistons, connecting rods, timing. Engine Management: Bosch Motronic M1.3 fuel injection, ignition system, sensors, actuators, troubleshooting. Fuel System: Fuel pump, fuel filter, injectors, fuel lines, fuel tank, evaporative emissions control. Cooling System: Radiator, water pump, thermostat, hoses, fan, coolant specifications. Exhaust System: Exhaust manifolds, catalytic converter, mufflers, pipes, emissions. Transmission: Getrag 265 5-speed manual gearbox, clutch system, flywheel, driveshaft, differential. Drivetrain: Rear axle, limited-slip differential (LSD), half-shafts, wheel bearings. Suspension: Front and rear suspension components, struts, control arms, bushings, springs, shock absorbers. Steering: Power steering system, steering rack, tie rods, steering column. Brakes: Front and rear disc brakes, calipers, rotors, brake lines, master cylinder, ABS (optional). Electrical System: Battery, alternator, starter, wiring diagrams, fuses, relays, lighting, instrumentation. Body And Chassis: Body panel removal and installation, structural components, rust prevention, soundproofing. Interior: Seats, dashboard, door panels, trim, HVAC system. HVAC: Heating, ventilation, and air conditioning (HVAC) system components and service. Diagnostics: Troubleshooting guides for all major systems, fault codes (where applicable). Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, tune-ups. Engine Rebuild: Complete engine disassembly, inspection, repair, and reassembly procedures. Transmission Overhaul: Manual transmission disassembly, repair, and reassembly, clutch replacement. Brake Service: Brake pad and rotor replacement, caliper service, bleeding the brake system. Suspension Repair: Replacement of struts, shocks, control arms, bushings. Electrical Troubleshooting: Diagnosing and repairing electrical faults using wiring diagrams. Body Repair: Panel alignment, dent repair, rust treatment procedures. Diagnostic Routines: Step-by-step diagnostic procedures for common issues. Technical Depth Depth Of Information: Extremely high. Covers everything from basic maintenance to full engine and transmission rebuilds. Diagnostic Capability: Advanced diagnostic procedures and troubleshooting trees for most common and complex issues. Rebuild Procedures: Detailed instructions for rebuilding the S14 engine and Getrag 265 transmission. Special Tools: Lists and descriptions of required special tools for specific repairs. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for easy information retrieval. Printable: Printable pages for hands-on use in the garage. Print Quality Image Resolution: High resolution, clear diagrams and illustrations. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: S14B23 Engine Type: Inline-4, naturally aspirated, DOHC Displacement: 2302 cc (2.3 Liters) Bore X Stroke: 91 mm x 87.2 mm Compression Ratio: 10.5:1 Performance Horsepower: 192 hp (143 kW) @ 6900 rpm (Euro Spec), 200 hp (147 kW) @ 6900 rpm (Catalytic Converter Spec) Torque: 170 lb-ft (230 Nm) @ 4750 rpm (Euro Spec), 177 lb-ft (240 Nm) @ 4750 rpm (Catalytic Converter Spec) Redline: 7250 rpm Fuel System Fuel Injection: Bosch Motronic M1.3 fuel injection with individual throttle bodies. Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Fuel Pump Pressure: Approx. 3.5 bar (50.8 psi) Fluid Capacities Engine Oil Capacity: 5.7 Liters (6.0 US Quarts) with filter change Coolant Capacity: 8.0 Liters (8.5 US Quarts) 🔧 Transmission Standard Transmission Type: Getrag 265 5-speed manual Gear Ratios: First: 3.72, Second: 2.40, Third: 1.71, Fourth: 1.24, Fifth: 0.97, Reverse: 3.45 Clutch Type: Hydraulically actuated single-plate dry clutch Optional Optional Transmission: None (E30 M3 was exclusively manual) Features Limited Slip Differential: Standard on E30 M3, typically 25% lock Transmission Fluid Type: BMW MTF-LT-2 or equivalent (e.g., Pentosin MTF II) Transmission Fluid Capacity: Approx. 1.5 Liters (1.6 US Quarts) 📐 Dimensions Exterior Wheelbase: 2565 mm (100.98 inches) Length: 4346 mm (171.1 inches) Width: 1677 mm (66.0 inches) Height: 1370 mm (53.9 inches) Weights Curb Weight: Approx. 1200 kg (2645 lbs) Gross Weight Rating: Approx. 1700 kg (3748 lbs) Wheels Tires Wheel Size: 15 x 7 inch (standard), 15 x 7.5 inch (optional/later models) Tire Size: 205/50 VR 15 Bolt Pattern: 5x120 mm 🛡️ Safety Features Ratings Crash Test Results: NHTSA and IIHS data from the period is limited but the E30 chassis generally performed well for its era. Active Features ABS: Optional (standard on some later models/markets) Passive Features Seatbelts: Three-point front seatbelts, lap belts for rear passengers. Body Structure: Reinforced chassis and crumple zones designed for the era....