🏷️ Basic Information Identification Make: Porsche Model: 925 Turbo Model Variant: Turbo Generation: Internal Project / Concept Production Years Covered By Manual: 1979-1984 👋 Introduction Market Position Target Audience: Professional Mechanical Technicians, Knowledgeable Enthusiasts Competitive Analysis Value Proposition: Provides dealer-level information for DIY repairs, cost savings, and maintaining vehicle quality. Key Features Accuracy: Endeavored to ensure accuracy of information. Comprehensiveness: Complete Service Manual with all necessary instructions for any repair. Dealer Equivalence: Contains many specifications and procedures available in authorized dealer service departments. User Benefit Empowerment: Enables owners to be better informed and perform repairs like a professional technician. 📋 Manual Details Coverage Areas Primary Coverage: Workshop Service and Repair Secondary Coverage: Routine Maintenance, Overhaul, Diagnostics, Troubleshooting Page Count Estimated Page Count: Comprehensive (Exact number not specified, but implied extensive coverage) Manual Type Type: Workshop Service Manual Language Language: English Format Delivery Format: PDF (Electronic Delivery via Email) Printability: Yes 📖 Manual Coverage Systems Covered Engine: Complete overhaul, tune-ups, lubrication system, fuel system, ignition system, exhaust system Transmission: Removal and installation, overhaul, repair Electrical System: Wiring diagrams, component testing, troubleshooting Body: Bodywork repair and procedures Chassis: Implied coverage through general repair procedures and component information Brakes: Implied coverage through general repair procedures and component information Suspension Steering: Implied coverage through general repair procedures and component information Procedures Included Routine Maintenance: Yes (Tune-ups, servicing) Diagnostics: Yes (Troubleshooting guidance) Repair: Yes (Detailed repair procedures) Overhaul: Yes (Engine and Transmission overhaul) Installation Removal: Yes (Component removal and installation) Assembly Disassembly: Yes (Assemblies and disassemblies) Technical Depth Depth: Comprehensive (suitable for professional technicians, covers advanced diagnostics and rebuilds) Proprietary Components Coverage: Includes instructions for proprietary component manufacturers Special Tools Identification: References and illustrations of required or recommended special tools with Porsche part numbers Safety Precautions Emphasis: Strong emphasis on safety equipment and precautions Warnings Cautions Notes Inclusion: Highlights critical information using WARNING, CAUTION, and NOTE 📊 Manual Specifications File Format Format: PDF Searchable: Implied (common for PDF service manuals) Print Quality Quality: Printable (assumed to be high quality for technical diagrams and text) Binding Type Type: N/A (Digital PDF) Paper Type Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code Or Type: Porsche 925 Turbo Engine (specific designation not provided in product info, but the '925' is often associated with turbocharged flat-six engines of the era, likely derived from the 930/911 Turbo, though '925' itself might be an internal project code or a misstatement for the 930 engine family). Performance Displacement: Likely 3.0L or 3.3L (typical for Porsche Turbo models of this era, e.g., 930) Horsepower: Estimated 260-300 HP (typical for 930 Turbo variants of this period, exact for '925' is speculative without more data). Torque: Estimated 250-280 lb-ft (typical for 930 Turbo variants of this period). Fuel System Induction: Turbocharged, Fuel Injection (likely Bosch K-Jetronic for the era) Ignition System: Electronic Ignition (likely distributor-based with electronic control) Lubrication System Type: Dry-sump lubrication (characteristic of high-performance Porsches) 🔧 Transmission Standard Type: Manual Transmission (likely 4-speed or 5-speed G50 gearbox precursor or similar from the 930 era) Optional Type: N/A (typically manual only for these performance variants) Features Drive Layout: Rear-wheel drive 📐 Dimensions Exterior Body Style: Coupe (likely based on the Porsche 911 chassis of the G-series generation, e.g., 930 Turbo) Weights Curb Weight: Approx. 1200-1300 kg (2645-2866 lbs) for models of this era. 🛡️ Safety Features Ratings Crash Test Data: Not applicable for original manufacturer documentation, but general safety features of the era apply. Active Features Brakes: 4-wheel disc brakes (likely ventilated front, solid rear) Passive Features Seatbelts: 3-point seatbelts Construction: Reinforced safety cage, crumple zones (design principles of the era). 💡 Technology Features Infotainment Audio System: Factory-installed radio/cassette player, potentially with upgraded aftermarket options common for the era. Manual will cover removal/installation and basic electrical connections. Driver Assistance Features: Limited by modern standards. Primarily ABS (if equipped), though basic driver aids are not the focus. 🔧 Maintenance Service Intervals Oil Change: Typically every 3,000-5,000 miles or annually, depending on usage. Specific interval would be detailed in the manual. Major Service: Likely at higher mileage intervals (e.g., 30,000 miles) covering more in-depth checks and adjustments. Specifics are in the manual. Fluid Specifications Engine Oil: High-quality synthetic or semi-synthetic oil, viscosity like 20W-50 or 10W-40, conforming to Porsche specifications of the era. Manual will specify exact grade and API service classification. Transmission Fluid: GL-4 or GL-5 gear oil, with specific viscosity (e.g., 75W-90). Manual will detail correct type and capacity. Brake Fluid: DOT 3 or DOT 4 brake fluid. Manual will specify the exact requirement for optimal performance and longevity. Known Issues Engine Reliability: Generally robust, but can be sensitive to cooling system maintenance, oil leaks (especially from oil lines), and turbocharger longevity if not properly maintained. The manual will cover common wear items and diagnostic procedures. Fuel System: Fuel lines can...