🏷️ Basic Information Identification Make: Porsche Model: 928 Model Variant: 928S Generation First Generation Years: 1978-1986 Specific Generation Covered: First Generation Codes Chassis Code: 928 Engine Code 928: M28.01 (US), M28.02 (ROW) Engine Code 928S: M28.09 (ROW), M28.11 (US) 👋 Introduction Market Position Vehicle Segment: Front-Engine, Rear-Wheel Drive Grand Tourer / Sports Car Positioning Statement: The Porsche 928 was a groundbreaking departure for the company, aiming to offer a more comfortable, powerful, and modern GT experience compared to its 911 sibling. Competitive Analysis Key Competitors Early Years: Jaguar XJ-S, BMW 6 Series, Mercedes-Benz SLC/SL Key Competitors 928S Era: Ferrari 400/412, Aston Martin V8 Vantage, Mercedes-Benz 500SL Key Features Design Philosophy: Transaxle layout for balanced weight distribution, V8 engine, aerodynamic styling. Manual Purpose: Essential for precision work on the vehicle's structural integrity and cosmetic alignment, critical for maintaining Porsche build quality. 📋 Manual Details Coverage Areas Covered Models: 1981-1982 Porsche 928, 1980-1984 Porsche 928S Primary Focus: Dimensional Specifications and Tolerances Page Count Estimated Page Count: N/A (PDF, dynamically rendered/specific document size) Manual Type Manual Type: Technical Data Document / Dimensional Reference Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Body Dimensions: Overall Length, Width, Height, Wheelbase, Front/Rear Track Component Tolerances: Body Panel Gaps, Door/Hood/Trunk Flushness, Glass Fitment Chassis Measurements: Frame and Suspension Mounting Points, Chassis Alignment Reference Points Interior Dimensions: Seating Position, Headroom, Legroom, Shoulder Room (as applicable to dimensional data) Engine Mounting Dimensions: Engine Bay Clearances, Component Placement Tolerances Wheel And Tire Dimensions: Wheel Diameter, Offset, Bolt Pattern, Tire Size Fitment Tolerances Procedures Included Body Alignment: Reference points and measurements for body alignment verification Panel Replacement Fitment: Guidelines for ensuring correct fitment of replacement body panels Quality Control: Manufacturing and assembly quality control checks related to dimensions Technical Depth Depth: Highly Specific Technical Data for Manufacturing, Restoration, and Quality Assurance Target Audience: Restoration Specialists, Bodyshops, Porsche Enthusiasts focused on OEM Accuracy 📊 Manual Specifications File Format File Type: PDF Searchability: Likely Searchable Text (OCR dependent) Printability: Printable Print Quality Image Clarity: Varies by source; typically includes diagrams and tables Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type 928: V8 Engine Displacement 928: 4.5 Liters (4474 cc) Engine Type 928S: V8 Engine Displacement 928S Row: 4.7 Liters (4664 cc) Engine Displacement 928S Us: 4.7 Liters (4664 cc) - Lowered Compression for Unleaded Fuel Performance Horsepower 928 Us: 219 hp @ 5500 rpm Torque 928 Us: 245 lb-ft @ 3600 rpm Horsepower 928S Row: 306 hp @ 5500 rpm Torque 928S Row: 302 lb-ft @ 4000 rpm Horsepower 928S Us: 290 hp @ 5500 rpm Torque 928S Us: 317 lb-ft @ 4000 rpm Fuel System Fuel Delivery 928: Bosch K-Jetronic Fuel Injection Fuel Delivery 928S: Bosch CIS-E (Continuous Injection System - Electronic) Fuel Injection Fuel Type: Premium Unleaded Gasoline 🔧 Transmission Standard Transmission Type 928: 5-Speed Manual (5-speed dogleg pattern) Optional Transmission Type 928 Optional: 3-Speed Automatic (Struffle/ZF) Transmission Type 928S: 5-Speed Manual (dogleg), 3-Speed Automatic Features Transaxle Layout: Rear-mounted transaxle for optimal weight distribution Transmission Fluid Specification: Dexron III (or equivalent for Automatic); GL-4 for Manual (check specific manual for exact specs) 📐 Dimensions Exterior Wheelbase: 2500 mm (98.4 in) Front Track: 1524 mm (60.0 in) Rear Track: 1532 mm (60.3 in) Length 928: 4555 mm (179.3 in) Length 928S: 4663 mm (183.6 in) Width 928: 1778 mm (70.0 in) Width 928S: 1784 mm (70.2 in) Height 928: 1283 mm (50.5 in) Height 928S: 1280 mm (50.4 in) Weights Curb Weight 928 Manual: Approx. 1560 kg (3439 lbs) Curb Weight 928S Manual: Approx. 1580 kg (3483 lbs) Wheel Bolt Pattern: 5x130 mm Wheel Offset Example: +52 mm (Varies by wheel design) Tire Size Example 928: 215/60VR15 (Front), 225/55VR15 (Rear) Tire Size Example 928S: 225/50VR16 (Front), 245/45VR16 (Rear) 🛡️ Safety Features Ratings Safety Ratings Era: No standardized NCAP ratings existed for this era; assessed based on design features. Active Features Braking System: Four-wheel disc brakes (Ventilated front) Anti Lock Brakes: ABS introduced later in the 928's life cycle, not standard on early 81-84 models. Passive Features Body Construction: Reinforced steel chassis, energy-absorbing crumple zones. Occupant Restraints: Three-point seatbelts, optional airbags on later models. Headlights: Pop-up halogen headlights for aerodynamic efficiency and improved lighting. 💡 Technology Features Infotainment Infotainment System Era: Basic analog systems typical for the early 1980s. Radio Features: AM/FM radio, often with cassette player; some models featured Dolby Noise Reduction. Driver Assistance Cruise Control: Standard on most models. Air Conditioning: High-performance A/C system, a key GT feature. Connectivity Connectivity Era: Not applicable in the modern sense. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500-10,000 miles or 12 months (recommend checking specific manual) Timing Belt Replacement: Crucial; typically every 30,000-60,000 miles or 3-5 years, depending on material and usage. A broken belt causes catastrophic engine...