🏷️ Basic Information Identification Make: Porsche Model: 911 Carrera 4 & 2 Model Generation: 964 Model Years Covered: 1989-1993 Codes Chassis Code: 964 👋 Introduction Market Position Positioning: The 964 generation represents a significant evolution in the Porsche 911 lineage, bridging air-cooled engineering with early electronic integration. This manual is essential for owners and specialists seeking to maintain and repair these iconic vehicles. Competitive Analysis Analogy: Similar to a doctor's reference book for the 964, offering precise diagnostic and repair information that exceeds generic repair guides. Key Features Factory Origin: Directly sourced from Porsche factory documentation, ensuring accuracy and completeness. Digital Access: Instant download provides immediate access to critical repair information, eliminating shipping delays and CD-ROM dependencies. 📋 Manual Details Coverage Areas Primary Coverage: Porsche 911 Carrera 4 & 2 (964 generation) Specific Years: 1989, 1990, 1991, 1992, 1993 Page Count Estimated Page Count: Varies by specific manual edition, but factory manuals for this era are typically comprehensive, often exceeding 1000 pages for complete sets. Manual Type Type: Factory Service Manual / Workshop Manual / Repair Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, timing, valve adjustments, cylinder heads, pistons, connecting rods, crankshaft. Engine Lubrication System: Oil pump, oil cooler, oil passages, lubrication theory and troubleshooting. Engine Cooling System: Radiator, fan, coolant pump, thermostat, coolant lines, air cooling components (if applicable to specific 964 variants), pressure testing. Fuel System: Fuel injection (Bosch Motronic), fuel pump, injectors, fuel pressure regulator, fuel filter, tank, lines, diagnostics. Exhaust System: Catalytic converters, mufflers, exhaust manifolds, hangers, diagnostic procedures. Accelerator Control System: Throttle body, linkage, cruise control (if equipped). Clutch: Clutch disc, pressure plate, release bearing, flywheel, hydraulic system, adjustment and replacement. Manual Transmission: Gearbox disassembly, assembly, gear ratios, bearings, synchronizers, shift linkage, lubrication. Automatic Transmission: Tiptronic (if applicable), torque converter, valve body, planetary gears, hydraulic control, diagnostics. Propeller Shaft: Driveshaft, universal joints, center support bearing, alignment. Rear Final Drive: Differential, ring and pinion gears, bearings, seals, lubrication, limited-slip differential (if equipped). Front Axle: Drive shafts, CV joints, hub bearings, seals (for Carrera 4). Rear Axle: Drive flanges, hub bearings, seals. Front Suspension: MacPherson struts, control arms, ball joints, bushings, anti-roll bar, spring rates, alignment specifications. Rear Suspension: Trailing arms, shock absorbers, springs, bushings, alignment specifications, asymmetrical rear suspension design. Wheels And Tires: Wheel bolt patterns, tire sizes, inflation pressures, balancing, torque specifications. Brake System: Brake discs, pads, calipers, master cylinder, brake lines, ABS system, parking brake, bleeding procedures, specifications. Steering System: Steering rack, tie rods, power steering pump, fluid, alignment specifications, troubleshooting. Body: Body panel removal/installation, door mechanisms, glass, seals, structural components, rust prevention, minor body repairs. Air Conditioner: Compressor, refrigerant, lines, controls, service and charging procedures. Electrical System: Wiring diagrams, fuse box, relays, battery, starter, alternator, lighting, ignition system, horn, power windows, mirrors, diagnostics, ECU. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plugs, brake fluid flush, coolant flush, belt inspection and replacement. Troubleshooting: Diagnostic flowcharts, symptom-based troubleshooting for engine, electrical, and mechanical issues. Repair: Step-by-step instructions for component removal, disassembly, reassembly, and installation. Diagnostics: Procedures for diagnosing faults using specialized tools and interpretative data. Technical Depth Depth: Comprehensive, covering all aspects from basic maintenance to full engine and transmission rebuilds. Includes detailed torque specifications, clearances, and component tolerances. Diagrams: Highly detailed, factory-quality exploded views and schematics for all systems. Access: Designed for professional mechanics, providing information at a professional workshop level. 📊 Manual Specifications File Format Format: PDF (Portable Document Format) Searchability: Typically text-searchable for quick information retrieval. Print Quality Quality: High-resolution scans suitable for printing individual pages or sections. Binding Type Binding: N/A (Digital Product) Paper Type Paper: N/A (Digital Product) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally aspirated, air-cooled flat-six (M64 engine family) Displacement: 3.6 Liters (3600 cc) for most 964 models Performance Horsepower Range: Approximately 250-265 hp (depending on year and specific market tune) Torque Range: Approximately 228-240 lb-ft (depending on year and specific market tune) Fuel System Injection System: Bosch Motronic electronic fuel injection and engine management Fuel Type: Unleaded gasoline (premium octane recommended) 🔧 Transmission Standard Transmission Type: 5-speed manual transaxle (G50 gearbox) Optional Transmission Type: Tiptronic automatic transmission (4-speed) Features All Wheel Drive: Carrera 4 models feature a permanent all-wheel-drive system with a viscous coupling. 📐 Dimensions Exterior Wheelbase: Approx. 2272 mm (89.4 in) Length: Approx. 4250 mm (167.3 in) Width: Approx. 1775 mm (69.9 in) Height: Approx. 1310 mm (51.6 in) Weights Curb Weight Carrera2: Approx. 1450 kg (3197 lbs) Curb Weight Carrera4: Approx. 1560 kg (3439 lbs) 🛡️ Safety Features Ratings Crash Safety Era: While specific modern crash ratings may not be directly comparable, Porsche engineering prioritized driver safety and chassis integrity for its era. Active Features ABS: Anti-lock Braking System (ABS) standard on most models. AWD: All-wheel-drive system in Carrera 4...