🏷️ Basic Information Identification Make: Porsche Model: 911 Carrera Model Series: 964 Model Variants Covered: Carrera 2 (C2), Carrera 4 (C4) Production Years Covered: 1989, 1990, 1991, 1992, 1993 Codes Chassis Code: 964 👋 Introduction Market Position Positioning: Iconic air-cooled Porsche, representing a blend of traditional engineering with modern (for its time) advancements Competitive Analysis Competitors: Ferrari 348, Chevrolet Corvette C4, Lotus Esprit, Aston Martin V8 Vantage Key Features Air Cooled Engine: Last generation of naturally aspirated, air-cooled flat-six engines Aero Design: Aerodynamically refined body with integrated front spoiler and retractable rear spoiler AWD Carrera4: Introduction of the Carrera 4 with the advanced viscous coupling all-wheel-drive system 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive repair and service procedures Secondary Coverage: Diagnostics, maintenance schedules, technical specifications Page Count Estimated Page Count: Varies by specific edition, typically 1000+ pages for full workshop manuals Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete overhaul, tuning, lubrication, cooling, fuel, exhaust, emissions Transmission Manual: Overhaul, clutch, gearshift mechanism, torque specifications Transmission Automatic: Overhaul, hydraulic controls, torque converter, cooling Running Gear: Suspension (front and rear), steering, brakes (all systems), wheel bearings, alignment Body: Body structure, panel replacement, rust repair, underbody protection Body Exterior: Bumpers, fenders, doors, hood, trunk, glass, trim, paint repair Body Interior: Seats, dashboard, door panels, headliner, carpets, trim, seat belts Air Conditioning: System components, refrigerant handling, diagnosis, repair Electrical System: Wiring diagrams, component testing, charging system, ignition system, lighting, instrumentation Diagnostics: Troubleshooting guides, fault code interpretation (where applicable), symptom analysis Procedures Included Maintenance: Oil changes, filter replacements, spark plug service, brake fluid flush, belt checks Repair: Component replacement, engine rebuilds, transmission repairs, suspension upgrades, body panel repair Troubleshooting: System-specific diagnostic routines, common problems and solutions Technical Specifications: Torque values, clearances, fluid capacities, electrical resistance values Technical Depth Depth: Comprehensive, covering everything from basic maintenance to full engine and transmission overhauls 📊 Manual Specifications File Format Format: PDF Searchability: Typically searchable text, allowing for quick location of information Printability: Printable pages Print Quality Quality: High resolution scans for clarity of diagrams and text Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Flat-Six (Porsche M64) Displacement: 3.6 Liters (3600 cc) Bore X Stroke: 100.0 mm x 76.4 mm Compression Ratio: 10.2:1 Performance Horsepower Carrera2: 250 PS (247 hp) @ 6100 rpm Horsepower Carrera4: 250 PS (247 hp) @ 6100 rpm Torque Carrera2: 312 Nm (230 lb-ft) @ 4800 rpm Torque Carrera4: 312 Nm (230 lb-ft) @ 4800 rpm Fuel System Fuel Injection: Bosch Motronic M2.1 (later M2.3 and M2.7) Fuel Type: Premium Unleaded Gasoline (91+ octane recommended) Engine Management Ignition System: Distributorless ignition (DIS) with twin ignition coils 🔧 Transmission Standard Carrera2: 5-speed Manual (G50/10) Carrera4: 5-speed Manual (G50/01) with AWD system Optional Automatic: Tiptronic Automatic (4-speed) Features Carrera4 AWD: Viscous coupling center differential for automatic torque distribution 📐 Dimensions Exterior Length: Approx. 4250 mm (167.3 in) Width: Approx. 1775 mm (69.9 in) Height: Approx. 1310 mm (51.6 in) Wheelbase: Approx. 2272 mm (89.4 in) Weights Curb Weight Carrera2: Approx. 1350 kg (2976 lbs) Curb Weight Carrera4: Approx. 1450 kg (3197 lbs) Gross Weight Rating: Varies by model, consult specific manual 🛡️ Safety Features Ratings Crash Test Data: Limited official crash test data from the era, emphasis on driver control and advanced braking for its time. Active Features ABS: Anti-lock Braking System (ABS) standard on all models AWD Carrera4: All-wheel-drive system enhances traction and stability Passive Features Airbags: Driver-side airbag standard Seat Belts: Three-point inertia-reel seat belts with pretensioners Rollover Protection: Reinforced A-pillars and integrated roll bar behind seats (coupe models) 💡 Technology Features Infotainment Audio System: Optional premium sound systems, typically with cassette player and AM/FM radio. CD players became available later. Climate Control: Manual or optional automatic climate control with A/C. Driver Assistance Cruise Control: Available as an option. Tiptronic Shift: Steering wheel or console-mounted buttons for manual gear selection on automatic models. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 10,000 km (6,000 miles) or 12 months, whichever comes first. Consult manual for specifics. Major Service: Intervals for spark plug replacement, belt inspection/replacement, brake fluid flush, etc. detailed in manual. Fluid Specifications Engine Oil Type: Porsche A40 approved synthetic oil (e.g., Mobil 1 0W-40 or equivalent). Engine Oil Capacity: Approx. 8.5 Liters (8.9 US Quarts) with filter change. Brake Fluid Type: DOT 4 Transmission Fluid Manual: SAE 75W-90 GL-5 synthetic gear oil. Transmission Fluid Automatic: Porsche spec ATF (e.g., Pentosin ATF-1 or equivalent). Known Issues Oil Leaks: Common due to age, particularly from crankshaft seals and oil lines. Valve Stem Seals: Wear can lead to blue smoke on startup. Mfi System: Potential issues with Mass Air Flow sensor and other engine management components. Suspension Bushings: Wear...