🏷️ Basic Information Identification Make: Porsche Model: 928 GT Year: 1990, 1991 Codes Model Code: 928 GT 👋 Introduction Market Position Market Position: The Porsche 928 GT was a high-performance grand tourer, positioned as a more comfortable and technologically advanced alternative to the 911, but with the performance expected of the Porsche marque. It targeted a more mature buyer seeking luxury and speed. Competitive Analysis Competitive Analysis: Competed against other luxury grand tourers of its era, such as the Jaguar XJ-S, Aston Martin Virage, and certain models from Mercedes-Benz and BMW. The 928 GT stood out with its unique V8 engine, transaxle layout, and advanced technology for its time. Key Features Key Features: Front-engine, rear-wheel drive, V8 power, advanced suspension, aerodynamic design, luxurious interior, strong performance figures. 📋 Manual Details Coverage Areas Coverage Areas: Comprehensive repair and service for 1990-1991 Porsche 928 GT Page Count Page Count: 2836 Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: 4.7L V8 (M28.42), including disassembly, assembly, diagnosis, and troubleshooting Fuel System: Bosch LH-Jetronic fuel injection, fuel pump, lines, injectors, diagnosis and repair Ignition System: Electronic ignition system, coil, distributor, spark plugs, diagnosis and adjustment Cooling System: Radiator, water pump, thermostat, coolant lines, fan, diagnosis and service Exhaust System: Exhaust manifolds, catalytic converter, mufflers, pipes, inspection and repair Transmission: 5-speed manual transaxle, clutch, gearshift mechanism, removal, installation, and overhaul Drivetrain: Driveshafts, CV joints, differential, inspection and service Suspension Front: Independent front suspension, control arms, ball joints, springs, shock absorbers, alignment Suspension Rear: Transaxle rear suspension, trailing arms, shock absorbers, springs, alignment Steering System: Power steering, steering rack, hydraulic pump, hoses, diagnosis and repair Braking System: Front and rear disc brakes, ABS (Anti-lock Braking System), brake lines, calipers, pads, rotors, bleeding procedures Electrical System: Battery, alternator, starter, wiring diagrams, lighting, fuses, relays, diagnosis Climate Control: Air conditioning system, heater, blower motor, controls, diagnosis and service Bodywork Exterior: Body panels, doors, hood, trunk, bumpers, glass, trim, alignment and repair Bodywork Interior: Seats, dashboard, door panels, trim, headliner, carpeting, removal and installation Body Electronics: Power windows, power locks, mirrors, wipers, horn, central locking system Procedures Included Maintenance: Routine maintenance, oil changes, filter replacements, fluid checks, tune-ups Troubleshooting: Diagnostic procedures, fault finding, common issues, error codes Repair: Component repair, system overhauls, part replacement Disassembly Assembly: Detailed step-by-step instructions for removing and installing all major components Adjustments: Engine, transmission, suspension, and brake adjustments Technical Depth Technical Depth: Full workshop level, covering all aspects from basic maintenance to complete engine and transmission rebuilds. Includes detailed torque specifications, clearances, and testing procedures. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Printable at home or professional print shop. High resolution for clear diagrams and text. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Compatibility Compatibility: Windows, Mac, Linux OS. Requires Adobe Reader. ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated V8 Engine Displacement: 4.7 Liters (4700 cc) Engine Code: M28.42 Performance Horsepower: Approximately 326 hp @ 6000 rpm Torque: Approximately 320 lb-ft @ 4500 rpm 0 60 Mph: Approx. 5.7 seconds Top Speed: Approx. 160 mph Fuel System Fuel Delivery: Bosch LH-Jetronic Fuel Injection Fuel Type: Premium Unleaded Gasoline 🔧 Transmission Standard Transmission Type: 5-Speed Manual Transaxle Optional Transmission Type: 4-Speed Automatic (Tiptronic on later models, but not standard for 928 GT 90-91) Features Features: Rear-mounted transaxle for optimal weight distribution 📐 Dimensions Exterior Length: Approx. 178.9 inches (4545 mm) Width: Approx. 71.3 inches (1810 mm) Height: Approx. 50.4 inches (1280 mm) Wheel Base: 98.4 inches (2500 mm) Front Track: Approx. 60.8 inches (1545 mm) Rear Track: Approx. 59.5 inches (1510 mm) Weights Curb Weight: Approx. 3,500 - 3,600 lbs (1588 - 1633 kg) Wheelbase: Approx. 98.4 inches (2500 mm) 🛡️ Safety Features Ratings Safety Ratings: Not widely available by modern standards; emphasized structural integrity and active safety features. Active Features Active Features: Anti-lock Braking System (ABS), powerful disc brakes, advanced suspension for stability Passive Features Passive Features: Reinforced safety cage, front and side impact protection (for its era), seat belts 💡 Technology Features Infotainment Infotainment: Original factory stereo system, often with cassette player. Limited by 1990s standards. Manual covers basic electrical for these systems. Driver Assistance Driver Assistance: Anti-lock Braking System (ABS) was a significant advanced feature for its time. Connectivity Connectivity: N/A (No integrated smartphone connectivity or Bluetooth in this era). Other Technology Other Technology: Pop-up headlights, electric seat adjustments, automatic climate control (optional/standard depending on specific configuration). 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles or annually, whichever comes first (refer to manual for exact specification). Timing Belt Replacement: Critical for V8 engines; typically every 30,000-60,000 miles or 4-5 years. Failure can cause catastrophic engine damage. Manual specifies interval. Fluid Specifications Engine Oil Type: Porsche...