🏷️ Basic Information Identification Make: Porsche Model: 928 Model Years Covered: 1978, 1979, 1980 Codes Chassis Codes: 928 👋 Introduction Market Position Positioning: A specialized technical reference for automotive professionals, restorers, and enthusiasts engaged in precise bodywork or frame alignment on the early Porsche 928. Competitive Analysis Competition: Few aftermarket manuals delve into such granular dimensional data. This is a factory-level document. Key Features Features: Provides the definitive factory specifications for dimensional accuracy, essential for authentic restorations and high-quality body repairs. Restoration Value: Invaluable for owners undertaking concours restorations or ensuring factory-correct panel gaps and alignment, crucial for the car's aesthetic and structural integrity. 📋 Manual Details Coverage Areas Primary Coverage: Dimensions and Tolerances Secondary Coverage: Structural measurements, component alignment, body panel gaps, engine and chassis component mounting points Page Count Estimated Page Count: Varies based on original factory publication, typically 50-150 pages for such specialized manuals. Manual Type Type: Technical Data Book / Dimensional Reference Manual Language Language: English (likely translated from original German) Format Format: Printed Book 📖 Manual Coverage Systems Covered Body And Chassis: Exact body panel dimensions, frame measurements, chassis alignment points, door, hood, and trunk gap specifications, bumper alignment. Engine And Powertrain Mounting: Engine block and transmission mounting point locations and tolerances, subframe alignment, suspension component mounting dimensions. Glass And Trim: Windshield, rear window, and side glass installation dimensions, molding and trim alignment specifications. Wheel And Tire Mounting: Wheel mounting face dimensions, hub centering specifications, and potentially tire clearance measurements related to body fitment. Interior Component Placement: Dimensions related to the precise placement of dashboard components, center console, seats, and door panels for correct fit and alignment. Procedures Included Measurement Techniques: Guidance on utilizing measuring tools and techniques for verifying dimensions and tolerances. Alignment Verification: Procedures for checking and adjusting chassis, body, and component alignment against factory specifications. Component Fitting: Specifications for ensuring components like fenders, bumpers, and trim pieces are fitted within acceptable dimensional tolerances. Technical Depth Depth: Highly specific, precise measurements critical for factory-level body repair, restoration, and quality control. Not intended for general maintenance or troubleshooting. Accuracy Requirement: Requires precision measurement tools (calipers, measuring tapes, dial indicators) and a controlled environment for accurate verification. 📊 Manual Specifications File Format Format Details: Printable book format, likely with line drawings and tables. Usage: Primarily used by body shop technicians, restoration specialists, and engineers verifying assembly accuracy. Print Quality Quality: Original factory print quality, designed for technical accuracy. Binding Type Binding: Likely a stapled or perfect-bound booklet. Paper Type Paper: Durable, matte paper suitable for technical documentation. ⚙️ Engine Specifications Primary Engine Engine Type: Naturally aspirated V8 (M28/x series) Displacement: 4.5 Liters (4474 cc) for early models (1978-1979). 4.7 Liters (4664 cc) introduced for 1980 onward (though this manual focuses on the early years). Performance Horsepower 1978 79: Approx. 219 hp (163 kW) DIN Torque 1978 79: Approx. 281 lb-ft (381 Nm) DIN Fuel System Fuel Delivery: Bosch K-Jetronic (CIS) Fuel Injection Cylinder Head Head Design: Aluminum alloy, dual overhead camshafts (DOHC) per bank, 2 valves per cylinder. Engine Layout Engine Placement: Front-mounted, water-cooled V8 🔧 Transmission Standard Transmission Type Standard: 5-speed manual transaxle Optional Transmission Type Optional: 3-speed automatic transaxle (e.g., by ZF) Features Transaxle Layout: Rear-mounted transaxle (engine in front, transmission in rear) for 50/50 weight distribution. 📐 Dimensions Exterior Length 1978 80: Approx. 4550 mm (179.1 in) Width 1978 80: Approx. 1725 mm (67.9 in) Height 1978 80: Approx. 1280 mm (50.4 in) Wheelbase 1978 80: Approx. 2400 mm (94.5 in) Weights Curb Weight Manual: Approx. 1450 kg (3197 lbs) Curb Weight Automatic: Approx. 1500 kg (3307 lbs) Interior Interior Space: Designed as a 2+2 grand tourer, offering comfortable seating for two adults and occasional seating for two smaller individuals or children in the rear. Cargo Trunk Volume: Rear hatch provides substantial cargo space, configuration of which is not directly detailed in a dimensions/tolerances book but is part of the overall design. 🛡️ Safety Features Ratings Crash Test Ratings: No standardized crash test ratings equivalent to modern NCAP available for this era. Active Features Braking System: 4-wheel disc brakes (ventilated front), Anti-lock Braking System (ABS) became available later, not standard on early models. Passive Features Restraints: Three-point seat belts, padded dashboard and steering wheel. 💡 Technology Features Infotainment Audio System: Period-appropriate cassette player and radio, often with high-quality (for the era) speaker systems. Driver Assistance ABS Availability: ABS was an optional extra on later models of this generation, not a standard feature. Connectivity Connectivity Features: No modern connectivity features (Bluetooth, USB, etc.) available. Analog systems only. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 15,000 km (9,000 miles) or 12 months, whichever comes first (refer to specific owner's manual for exact dates). Timing Belt Replacement: Timing belt replacement is critical. Intervals vary by year and type, but typically around 60,000-100,000 km...