🏷️ Basic Information Identification Make: Porsche Model: 928 Model Variant: 928 S Codes Covered Years: 1981, 1982, 1983, 1984 Specific Focus: Dimensions and Tolerances 👋 Introduction Market Position Market Positioning: Essential for serious restoration and maintenance of the Porsche 928, especially for those prioritizing factory-correct specifications. Competitive Analysis Unique Selling Proposition: Focuses specifically on the critical dimensions and tolerances crucial for structural integrity and panel fitment, a niche often overlooked in general repair manuals. Key Features Key Features: Provides the precise measurements needed to ensure a factory-correct build or restoration, invaluable for identifying discrepancies and verifying structural soundness. 📋 Manual Details Coverage Areas Primary Coverage: Vehicle Dimensions and Tolerances Secondary Coverage: Bodywork, Chassis, Engine Bay, Interior Components Page Count Estimated Page Count: Varies (Typically 50-150 pages for this specific type of technical data manual) Manual Type Type: Technical Data Manual / Specification Manual / Tolerance Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Chassis Tolerances: Frame, Suspension Mounting Points, Body Panel Gaps Bodywork Dimensions: Overall Length, Width, Height, Wheelbase, Track Width Engine Bay Measurements: Component Placement, Clearance Specifications Interior Component Dimensions: Dashboard Layout, Seat Mounting, Door Panel Fitment Procedures Included Measurement Guidelines: How to accurately measure critical dimensions Alignment Tolerances: Specifications for critical alignment points Body Repair Verification: Ensuring body panel fitment after repairs or restoration Technical Depth Depth: Highly Technical, Precision Measurement Focused Target Audience: Restorers, Classic Car Specialists, Body Shop Technicians, Precision Engineers 📊 Manual Specifications File Format File Format: PDF Searchability: Likely Searchable Text (depending on OCR quality of original) Print Quality Printability: High-quality, printable pages Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Displacement: 4.5L (for 1981-1982), 4.7L (for 1983-1984 928 S) Engine Displacement Engine Type: V8, naturally aspirated Performance Horsepower 1981 1982: Approx. 219 hp (US spec) Horsepower 1983 1984 928S: Approx. 245-278 hp (depending on market and specific S variant) Fuel System Fuel Delivery: Bosch K-Jetronic (CIS - Continuous Injection System) 🔧 Transmission Standard Transmission Type: 3-speed Automatic (standard on most US models) Optional Transmission Type: 5-speed Manual (less common, especially in US market for these years) Features Transmission Layout: Transaxle design (engine front, transmission rear) for optimal weight distribution. 📐 Dimensions Exterior Wheelbase: 2600 mm (102.4 in) Length: 4656 mm (183.3 in) Width: 1785 mm (70.3 in) Height: 1270 mm (50.0 in) Weights Curb Weight: Approx. 1500-1600 kg (3300-3530 lbs) depending on options and year 🛡️ Safety Features Ratings Safety Ratings: No standardized crash ratings available for this era in the same way as modern vehicles. Focus on inherent structural design. Active Features Active Safety Features: Four-wheel disc brakes (ventilated front/rear), Power-assisted steering, ABS (introduced later in the 928's lifespan, not standard for these specific years) Passive Features Passive Safety Features: Reinforced chassis, Crumple zones, Three-point seatbelts, Padded interior surfaces 💡 Technology Features Infotainment Infotainment Early Era: Basic AM/FM radio with cassette player, optional power antenna, manual climate control. Driver Assistance Driver Assistance Features: Limited by modern standards. Focus on advanced chassis design and braking system for its era. Connectivity Connectivity Features: None by modern definition. Analog systems only. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles or 6-12 months, using high-quality synthetic oil. Timing Belt Replacement: Crucial for V8 engines; consult manual for specific interval (often around 50,000 miles or 5 years). Failure can cause catastrophic engine damage. Fluid Specifications Engine Oil Type: High-quality synthetic oil, e.g., 15W-50 or 20W-50, depending on climate and manufacturer recommendation. Coolant Type: Porsche approved coolant (typically ethylene glycol-based with anti-corrosion additives), mixed 50/50 with distilled water. Brake Fluid Type: DOT 4 brake fluid. Transmission Fluid Automatic: Dexron III (or equivalent), check manual for exact specification and fill procedure. Known Issues Common Issues Early: Fuel line degradation (especially in warmer climates), electrical gremlins (wiring harness issues), cooling system leaks, aging rubber components (bushings, hoses), transmission cooler leaks (automatic). Common Issues 928S: Increased demand on cooling and fuel systems due to higher performance, potential for head gasket leaks, power steering system leaks. 📚 Vehicle History Brand Heritage Brand Heritage: Porsche, renowned for high-performance sports cars, introduced the 928 as a departure from its traditional rear-engine formula, aiming for a more comfortable grand tourer with advanced technology. Model Evolution Model Evolution Early: The 928 debuted in 1977. The 1981-1982 models represent the initial production phase, evolving into the more powerful 'S' variants in 1980 (Europe) and 1983 (US), featuring larger engines and updated styling. Production Production Period Covered: 1980-1984 (specifically for the S models and the range covered by the manual) Manufacturing Location: Stuttgart, Germany 🏆 Awards & Recognition Recognitions Automotive Engineering Award: The Porsche 928 was considered a technical tour de force and a significant engineering achievement for its time, often cited for its innovative transaxle design...