🏷️ Basic Information Identification Make: Porsche Model: 911 Year: 1974 Generation Chassis Code: G-Series Codes Engine Codes Covered: 911/92, 911/93 👋 Introduction Market Position Vehicle Segment: Luxury Sports Car Target Audience Of Manual: Porsche Dealership Technicians, Independent Porsche Specialists, Enthusiast DIY Mechanics Competitive Analysis Competitors 1974: Ferrari Dino 246 GT, Jaguar E-Type, Chevrolet Corvette (C3) Key Features Vehicle Design Philosophy: Rear-engine, air-cooled, iconic silhouette, driver-focused performance Manual Value Proposition: Provides factory-level accuracy and detail for accurate maintenance and repair, preserving the vehicle's integrity and value 📋 Manual Details Coverage Areas Manual Coverage Scope: Comprehensive factory service and repair Page Count Approximate Page Count: 600+ Manual Type Manual Classification: Factory Service Manual / Workshop Manual Language Language Of Publication: English Format Typical Format: Printed Book 📖 Manual Coverage Systems Covered Mechanical Systems: Engine, Fuel System, Ignition System, Lubrication System, Cooling System, Clutch, Transmission, Drive Axles, Suspension (Front & Rear), Steering, Brakes Electrical Systems: Electrical System Overview, Charging System, Starting System, Ignition System Components, Lighting, Instruments and Gauges, Wiper/Washer System, Horn, Radio, Air Conditioning (if equipped) Body And Chassis: Body Shell, Doors, Hoods, Bumpers, Interior Trim, Seats, Glass, Body Repairs, Sealing Procedures Included Maintenance Procedures: Routine Maintenance Checks, Lubrication Schedule, Filter Replacements, Spark Plug Service, Valve Adjustment Repair Procedures: Engine Rebuild (Disassembly & Assembly), Transmission Overhaul, Brake System Overhaul, Suspension Component Replacement, Steering System Repair, Fuel System Servicing, Electrical Component Diagnostics and Repair Diagnostic Procedures: Troubleshooting Guides, Symptom-based Diagnostics, Electrical Schematics Interpretation, Mechanical Component Testing Technical Depth Diagnostic Level: Advanced diagnostics with detailed troubleshooting flowcharts and electrical diagrams Rebuild Level: Complete engine and transmission disassembly and reassembly procedures, including torque specifications and clearances Information Detail: Detailed specifications, schematics, exploded views, and step-by-step instructions for all factory procedures 📊 Manual Specifications File Format Digital File Format If Applicable: N/A (Typically printed, but digital versions may exist) Print Quality Paper Quality: Durable, high-quality paper suitable for workshop environments Illustration Clarity: Clear, crisp line drawings and diagrams Binding Type Binding Method: Stitched and glued binding for durability Page Layout: Organized by system and procedure, often with pull-out wiring diagrams ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, flat-six (Boxer) Displacement Cc: 2687 Displacement Ci: 164 Performance Horsepower Bhp: 175 Torque Lb Ft: 210 Fuel System Fuel Delivery: Bosch Mechanical Fuel Injection (CIS - Continuous Injection System) Fuel Type Recommended: Premium Unleaded Gasoline (91+ Octane) Lubrication Oil Capacity Liters: 9.0 Oil Capacity Quarts: 9.5 Oil Type Specification: API SG or higher, SAE 20W-50 (or per Porsche recommendation based on climate) 🔧 Transmission Standard Transmission Type Std: 5-Speed Manual Transaxle (Type 915) Features Clutch Type: Single dry plate, hydraulically operated Transmission Fluid Type: GL-4 Gear Oil (e.g., Mobilube PTX 75W-90 or equivalent) 📐 Dimensions Exterior Length Mm: 4161 Width Mm: 1651 Height Mm: 1310 Wheelbase Mm: 2271 Weights Curb Weight Kg: 1100 Curb Weight Lbs: 2425 🛡️ Safety Features Ratings Crash Test Ratings Era: No standardized ratings comparable to modern tests exist for this era Active Features Braking System Type: Four-wheel hydraulic disc brakes (ventilated front) Front Brake Rotor Diameter Mm: 282 Rear Brake Rotor Diameter Mm: 274 Passive Features Seat Belts: 3-point inertia reel seat belts Steering Column Safety: Collapsible steering column 💡 Technology Features Infotainment Radio System: Optional factory-installed AM/FM radio, often with a cassette player later in the G-series run, but likely AM/FM for '74 Driver Assistance ABS Availability: Not available on 1974 models 🔧 Maintenance Service Intervals Oil Change Interval Miles: 5,000 - 7,500 (or annually) Major Service Interval Miles: 15,000 - 30,000 (includes valve adjustment, spark plugs, fuel filter, etc.) Fluid Specifications Brake Fluid Type: DOT 4 Coolant Type: Not applicable (Air-cooled engine) Known Issues Engine Mounts: Degradation and potential failure of rubber engine mounts Fuel System Cis: Potential for wear in the fuel distributor, airflow sensor plate, and injectors, leading to running issues Oil Leaks: Common from engine seals, crankcase, and oil lines due to age and heat Transmission Synchros: Wear in synchromesh rings, particularly in 3rd and 4th gears, can lead to difficult shifting Body Rust: Prone to rust in wheel arches, sills, door bottoms, and longitudinals, especially in humid climates or if not properly maintained 📚 Vehicle History Brand Heritage Brand Founding Year: 1931 Brand Focus: High-performance sports cars and race cars Model Evolution First Generation 911 Year: 1963 1974 Model Introduction: Marked the introduction of the G-Series chassis with significant safety and styling updates, including integrated bumpers G Series Era: 1974-1989 Production Manufacturing Location: Stuttgart, Germany 🏆 Awards & Recognition Recognitions Automotive Design Awards Era: While specific awards for the '74 model might not be readily available, the Porsche 911 lineage is consistently lauded for its timeless design and engineering prowess. Ratings Collectibility Rating: High, considered a classic and desirable sports car Certifications Manual Accuracy Standard: Factory-issued, adhering to Porsche's engineering and service standards