🏷️ Basic Information Identification Make: Porsche Model: 928 Year: 1978 Codes Vin Prefix: 928 👋 Introduction Market Position Positioning: Premium Grand Tourer, Innovator in Porsche Lineup Competitive Analysis Competitors Era: Aston Martin V8 Vantage, Jaguar XJ-S, BMW M1, Ferrari 400 GT Key Features Design Philosophy: Front-engine, Rear-wheel drive, Transaxle layout, Advanced aerodynamics Target Audience: Enthusiasts, DIY Mechanics, Professional Technicians Manual Advantage Benefit: Empowers owners and technicians with factory-level knowledge for maintenance and repair. 📋 Manual Details Coverage Areas Primary Coverage: Full Repair and Service Secondary Coverage: Maintenance, Troubleshooting, Diagnostics Page Count Estimated Page Count: High (Comparable to Factory Service Manuals, typically 1000+ pages) Manual Type Type: Repair Service Manual / Workshop Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Print Ability: Full Printable Zoom Functionality: Yes (Zoom IN/OUT) Requirements Software Requirements: Adobe PDF Reader, WinZip Operating System Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Ignition System, Exhaust System, Cooling System Drivetrain: Transmission (Automatic transaxle), Clutch, Driveshafts, Differential Chassis: Suspension (Front and Rear), Steering System, Brakes (Front and Rear Disc), Wheels and Tires Electrical: Battery, Charging System, Starting System, Lighting System, Instrumentation, Wiper/Washer System, Power Windows, Air Conditioning System, Radio/Audio System, Body Control Modules Body And Interior: Body Panels, Doors, Hood, Trunk, Glass, Seats, Interior Trim, Safety Belts Procedures Included Maintenance: Scheduled Maintenance, Fluid Changes, Filter Replacements, Lubrication Repair: Engine Overhaul, Transmission Repair, Brake System Overhaul, Suspension Component Replacement, Electrical Component Diagnosis and Repair Disassembly Assembly: Detailed step-by-step disassembly and reassembly of major components Cleaning Reinstalling: Procedures for cleaning and reinstalling parts Technical Depth Depth: Comprehensive (Factory Service Manual Level) Diagnostic Capabilities: Includes diagnostic procedures, troubleshooting charts, and fault code interpretation (where applicable for the era) 📊 Manual Specifications File Format Format: PDF Print Quality Quality: High resolution, suitable for printing all pages Binding Type Type: N/A (Digital Download) Paper Type Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: M30 (Developed from BMW M30, but significantly Porsche modified) Configuration: V8 Displacement: 4.5 Liters (4474 cc) Bore X Stroke: 90.0 mm x 88.0 mm Compression Ratio: 8.5:1 (US Spec) Performance Horsepower SAE Net: 210 hp @ 5500 rpm (US Spec) Torque SAE Net: 264 lb-ft (358 Nm) @ 3600 rpm (US Spec) Fuel System Fuel Delivery: Bosch K-Jetronic (CIS) Fuel Injection Fuel Type: Unleaded Premium Gasoline (91 Octane or higher) Ignition System Type: Electronic Ignition (Bosch) Cooling System Type: Water-cooled, Pressurized Coolant Type: Ethylene Glycol-based antifreeze (e.g., Porsche approved or equivalent) 🔧 Transmission Standard Type: 3-Speed Automatic (Porsche Automatic Transmission - PAT) Optional Type: 5-Speed Manual (Getrag G28/10) Features Transaxle Layout: Rear transaxle (engine front, transmission rear) Fluid Specifications Automatic Fluid: Dexron III (or equivalent, consult manual for precise spec) Manual Fluid: SAE 75W-90 GL-4 or GL-5 Gear Oil (consult manual for precise spec) 📐 Dimensions Exterior Length: 4,785 mm (188.4 in) Width: 1,780 mm (70.1 in) Height: 1,280 mm (50.4 in) Wheelbase: 2,433 mm (95.8 in) Weights Curb Weight: Approx. 1,550 kg (3,417 lbs) Gross Vehicle Weight Rating: Approx. 2,000 kg (4,409 lbs) 🛡️ Safety Features Ratings Era Specific Ratings: N/A (Modern crash test ratings not applicable) Active Features Brakes: Power-assisted disc brakes (ventilated front, solid rear), Dual-circuit hydraulic system Suspension: Independent front and rear suspension designed for stability and handling Passive Features Seatbelts: Three-point inertia-reel seat belts Steering Column: Collapsible steering column Body Structure: Reinforced safety cage construction 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with cassette player (options varied) Driver Assistance Cruise Control: Standard on most models Connectivity Connectivity Features: Limited by era; primarily focused on vehicle functionality Comfort Features Climate Control: Automatic Climate Control (often referred to as 'Klimatronic') Power Accessories: Power windows, power locks, power mirrors 🔧 Maintenance Service Intervals Oil Change: Typically every 5,000-7,500 miles or annually (refer to manual for precise intervals) Major Service: Recommended every 30,000 miles or as per manual, often includes timing belt inspection/replacement (if applicable on specific sub-models/years). Fluid Specifications Engine Oil: API SG or higher, Viscosity typically 15W-50 or 20W-50 (consult manual for precise specifications and capacity) Brake Fluid: DOT 4 (recommended) Power Steering Fluid: Pentosin CHF 11S or equivalent (consult manual for precise specification) Known Issues Common Problems: Fuel accumulator issues, HVAC blower motor resistor, timing belt tensioner (on later models), electrical gremlins, coolant pipe leaks, fuel line degradation. Maintenance Focus: Regular fluid checks and changes, attention to the cooling system, and proactive maintenance of the fuel injection system are crucial. 📚 Vehicle History Brand Heritage Porsche Legacy: Renowned for engineering excellence, racing heritage, and sports car innovation Model Evolution Introduction Year: 1978 Design Inspiration: Porsche's vision for a comfortable, high-performance grand tourer to replace the aging 911 as their flagship Production Production Period: 1978-1995 Manufacturing Location: Zuffenhausen, Germany 🏆 Awards & Recognition Recognitions Automotive Journalism: Praised for its innovative design...