🏷️ Basic Information Identification Make: Porsche Model: 964 Year: 1991 Chassis Code: 964 Codes Manual Product Name: Porsche 964 1991 Repair Service Manual Manual Format Code: PDF 👋 Introduction Market Position Target Audience: Professional Technicians and Advanced DIY Enthusiasts Value Proposition: Provides factory-level repair and maintenance knowledge, enabling accurate and efficient service. Competitive Analysis Comparison To Owners Manual: Significantly more detailed than an owner's manual, focusing on repair procedures and technical data. Digital Vs Paper: Offers immediate access and searchability, replicating the content of physical factory manuals. Key Features Feature 1: Step-by-step repair procedures with clear instructions. Feature 2: Critical technical specifications and tolerances. Feature 3: Illustrations, diagrams, and photographs to aid comprehension. Feature 4: Comprehensive coverage of all major vehicle systems. Feature 5: Factory-level information accessible to owners. 📋 Manual Details Coverage Areas Primary Coverage: Repair and Maintenance Secondary Coverage: Diagnostics, Troubleshooting, Specifications, Procedures Page Count Estimated Page Count: Refer to actual manual for exact count (typically hundreds of pages for a complete factory manual) Manual Type Type: Factory Repair Service Manual / Workshop Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader, WinZip (or similar decompression utility) Compatibility Operating Systems: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine: 3.6L M64 Flat-6 (including lubrication, cooling, fuel injection, ignition, exhaust) Transmission: G50 5-speed Manual Transmission (including clutch, shift mechanism, gearbox disassembly/assembly) Drivetrain: Rear-wheel Drive, Differential, Axles, CV joints Suspension: Front and Rear Suspension (struts, control arms, bushings, sway bars, shock absorbers) Steering: Power Steering System (rack and pinion, pump, lines) Brakes: Hydraulic Brake System (ABS, brake lines, calipers, master cylinder, parking brake) Electrical: Wiring Diagrams, Lighting, Fuses, Relays, Battery, Alternator, Starter, ECUs Body: Body Panels, Doors, Hood, Trunk, Bumpers, Glass, Seals, Interior Trim HVAC: Heating, Ventilation, and Air Conditioning System Fuel System: Fuel Tank, Fuel Pump, Injectors, Fuel Lines, DME (Digital Motor Electronics) Ignition System: Spark Plugs, Ignition Coils, Distributor (if applicable, though 964 uses distributorless ignition with coil packs) Procedures Included Maintenance: Scheduled Maintenance, Fluid Changes, Filter Replacements, Lubrication Repair: Engine Rebuild, Transmission Overhaul, Brake Service, Suspension Replacement, Electrical Component Repair Troubleshooting: Diagnostic Procedures, Fault Code Interpretation, Symptom-Based Diagnosis Disassembly: Step-by-step instructions for removing and disassembling components Assembly: Step-by-step instructions for reassembling components Cleaning: Component cleaning procedures Reinstallation: Proper installation of components with torque specifications Technical Depth Depth: Comprehensive: Covers everything from basic maintenance to complete engine and transmission rebuilds, including detailed electrical schematics and diagnostic procedures. 📊 Manual Specifications File Format Quality: High Resolution PDF, suitable for detailed viewing Print Quality Printability: Full Printable: Pages can be printed for convenient use during repairs. Zoom Capability: Zoom IN/OUT: Allows for detailed examination of diagrams and text. Binding Type Type: Digital Download (PDF). No physical binding. Paper Type Type: Not Applicable (Digital Format). ⚙️ Engine Specifications Primary Engine Engine Code: M64 Engine Type: Naturally Aspirated, Air-Cooled Flat-6 (Boxer) Displacement: 3.6 Liters (3600 cc) Performance Horsepower: Approx. 250 hp (184 kW) @ 6100 rpm (US Spec) Torque: Approx. 225 lb-ft (305 Nm) @ 4800 rpm (US Spec) Fuel System Fuel Delivery: Bosch Motronic DME (Digital Motor Electronics) with Sequential Fuel Injection Fuel Type: Premium Unleaded Gasoline (91 Octane or higher) Engine Management ECU Type: Bosch Motronic M2.3.2 Ignition System Ignition Type: Distributorless Ignition System (DIS) with Coil Packs Cooling System Cooling Method: Air-Cooled with Oil Cooling Lubrication System Oil Capacity: Approx. 8.5 Liters (8.9 US Quarts) with filter Recommended Oil: High-quality synthetic engine oil, e.g., 0W-40 or 5W-40 (refer to manual for exact Porsche A40 specification) 🔧 Transmission Standard Transmission Type: G50 5-speed Manual Transaxle Optional Transmission Type: Tiptronic Automatic (Introduced later in 964 production, but not typically for '91 models in this context. Manual is standard for '91.) Features Clutch Type: Hydraulically Actuated Single Dry Plate Clutch Fluid Specifications Transmission Fluid: GL-5 Gear Oil (Viscosity typically 75W-90 or 80W-90, consult manual for specific Porsche PN and recommendation) Fluid Capacity Transmission Fluid Capacity: Approx. 2.5 Liters (2.6 US Quarts) 📐 Dimensions Exterior Length: Approx. 4250 mm (167.3 in) Width: Approx. 1690 mm (66.5 in) Height: Approx. 1310 mm (51.6 in) Wheelbase: Approx. 2272 mm (89.4 in) Weights Curb Weight: Approx. 1450 kg (3197 lbs) Gross Vehicle Weight Rating: Refer to vehicle placard (typically around 1870 kg) 🛡️ Safety Features Ratings Crash Test Results: No standardized crash test ratings available for this era and vehicle type from agencies like NHTSA/IIHS. Porsche engineering focused on occupant protection and structural integrity based on their internal standards. Active Features Feature 1: Anti-lock Braking System (ABS) Feature 2: Four-wheel disc brakes with ventilated rotors Passive Features Feature 1: Reinforced chassis and body structure Feature 2: Driver and passenger front airbags (standard for 1991) Feature 3: 3-point inertia-reel seat belts Feature 4: Collapsible steering column 💡 Technology Features Infotainment Audio System: Porsche CR-210 AM/FM...