🏷️ Basic Information Identification Make: Porsche Model: 911 Model Variant: G-Series (longhood, impact bumper era) Year Range: 1984-1989 Codes Chassis Code: 911 / 964 (transition period, manual covers G-series 911 up to intro of 964) 👋 Introduction Market Position Target Audience: Porsche owners undertaking DIY maintenance and restoration, independent repair shops, and enthusiasts seeking deep technical knowledge. Competitive Analysis Advantage: Provides the same in-depth, authoritative information used by certified Porsche technicians, offering a significant advantage over generic repair guides. Key Features Authenticity: Represents the official workshop manual documentation for the specified model years. Completeness: Covers virtually every aspect of the vehicle's mechanical and electrical systems. Accessibility: Instant download eliminates shipping delays, enabling immediate use. Value Proposition: Empowers owners to perform maintenance and repairs confidently, potentially saving significant costs and avoiding fraudulent practices by unscrupulous repairers. 📋 Manual Details Coverage Areas Scope: Comprehensive workshop and repair coverage for 1984-1989 Porsche 911 models. Page Count Estimated Count: 1500+ Manual Type Type: Workshop Manual / Service Manual / Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine (all variants for the specified years), Fuel and Emissions systems, Transaxle (manual and potentially automatic options). Chassis: Steering, Suspension (front and rear), Brakes (hydraulic and mechanical components). Body: Body construction, panels, doors, windows, trim, and associated hardware. Electrical: Complete electrical system, wiring diagrams, component testing, diagnosis. Comfort And Convenience: Heater and Air Conditioner (HVAC) system, interior components. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication, inspections. Diagnostics: Troubleshooting guides, symptom-based diagnostics, fault code interpretation (where applicable). Repair: Step-by-step repair procedures for all major systems, including engine rebuild, transmission overhaul, brake caliper replacement, suspension component renewal. Disassembly Reassembly: Detailed instructions for component removal, disassembly, cleaning, inspection, and reassembly. Adjustment Calibration: Procedures for adjusting timing, idle speed, clutch engagement, brake bias, and other critical settings. Technical Depth Level: Expert-level, covering detailed component specifications, tolerances, torque values, and diagnostic procedures typically used by professional technicians. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval. Print Quality Printability: Optimized for printing individual pages or sections as needed. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Air-Cooled Flat-Six (Boxer) Displacement: 3.2L (930/20, 930/21, 930/25, 930/26 engines); 3.2L Carrera; 3.2L Speedster; 3.3L Turbo (930 Turbo). Performance Horsepower Range: Approximately 207 hp (Carrera) to 282 hp (Turbo). Torque Range: Approximately 195 lb-ft (Carrera) to 283 lb-ft (Turbo). Fuel System Induction: Bosch L-Jetronic or Motronic fuel injection (depending on specific model year and variant). Fuel Type: Unleaded Gasoline (premium octane recommended). Components Cooling System: Air-cooled with internal oil cooling. Ignition System: Distributor-based, electronic ignition. 🔧 Transmission Standard Type: 5-speed Manual Transaxle (G50 gearbox introduced from mid-1986 for Carrera models, previous models used the G915 gearbox). Optional Type: 3-speed automatic transaxle (Tiptronic not available in this era for 911). Features Clutch: Hydraulically actuated dry single-plate clutch. Differential: Limited-slip differential (LSD) often optional or standard on higher performance variants. 📐 Dimensions Exterior Length: Approx. 169-171 inches (4293-4343 mm), depending on model and bumper type. Width: Approx. 67-70 inches (1702-1778 mm). Height: Approx. 50-52 inches (1270-1321 mm). Weights Curb Weight: Approx. 2,600 - 3,000 lbs (1180 - 1360 kg), depending on specification. 🛡️ Safety Features Ratings Crash Testing: No standardized NHTSA/IIHS ratings available for this era. Known for robust chassis construction. Active Features Braking System: Four-wheel hydraulic disc brakes, internally ventilated (cross-drilled on some performance models). ABS: Anti-lock Braking System (ABS) became available as an option in later years of this generation. Passive Features Seatbelts: Three-point inertia-reel seatbelts. Structure: Integrated roll cage structure within the body shell. 💡 Technology Features Infotainment Audio System: Factory-fitted AM/FM/Cassette stereo systems; premium sound options available. Upgrades are common. Driver Assistance Cruise Control: Optional on many models. Connectivity Connectivity Features: None in the modern sense; basic connectivity through radio and optional external antenna for CB radio or early car phones. 🔧 Maintenance Service Intervals Oil Change: Typically every 3,000-5,000 miles or annually, whichever comes first, using high-quality synthetic oil. Major Service: Recommended every 15,000-30,000 miles, including spark plug replacement, valve adjustment, fuel filter replacement, and belt inspection/replacement. Fluid Specifications Engine Oil: Viscosity: 15W-50 or 20W-50 synthetic oil (e.g., Mobil 1, Castrol) is commonly recommended for air-cooled engines, especially in warmer climates. Capacity: Approx. 10-11 quarts (9.5-10.4 liters). Brake Fluid: DOT 4 synthetic brake fluid. Transmission Fluid: Specific gear oil; consult manual for exact specification (e.g., GL-5 rated, often a specific Porsche formulation). Coolant: N/A (Air-cooled engine). Known Issues Engine: Oil leaks (especially from front crankshaft seal, oil cooler seals, valve covers), cylinder head stud failure (pre-80s, less common but possible in early 80s engines), timing chain tensioner wear, DME relay failures (post-85 models). Transmission: G915 transmission synchromesh wear (especially 2nd and 3rd gear),...