🏷️ Basic Information Identification Make: Nissan Model: Skyline Generation: R31 Model Years Covered: 1985-1990 👋 Introduction Market Position Target Audience: Owners of Nissan Skyline R31, mechanics, restoration specialists Value Proposition: Inexpensive way to maintain and repair vehicle, DIY savings Competitive Analysis Manual Uniqueness: Complete and intact, searchable, bookmarked for ease of use Key Features Key Selling Points: Completeness, detail, illustrations, step-by-step instructions, accessibility 📋 Manual Details Coverage Areas Comprehensive Coverage: Yes Diagnostic Procedures: Included Repair Procedures: Included Maintenance Procedures: Included Rebuild Procedures: Included Refurbishment Procedures: Included Restoration Procedures: Included Page Count Estimated Page Count: Likely over 1000 pages (typical for comprehensive factory service manuals) Manual Type Manual Classification: Factory Service Manual / Repair Manual Language Language: English Format Digital Format: PDF Digital Requirements: Adobe PDF Reader Platform Compatibility: Windows, macOS, Linux, iOS (iPhone/iPad), Android Features Searchable Text: Yes Bookmarked: Yes Instant Download: Yes 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed coverage of all engine variants Engine Management: Fuel injection, ignition system diagnostics and repair Transmission: Manual and automatic transmission service and overhaul Drivetrain: Clutch, driveshaft, differential, axles Suspension: Front and rear suspension components, alignment Steering: Power steering system, steering rack, column Brakes: Hydraulic system, ABS (if equipped), disc and drum brake service Electrical System: Battery, charging system, starting system, lighting Wiring Schematics: Comprehensive, detailed diagrams for all circuits Body And Chassis: Body panel repair, structural information, glass replacement HVAC: Heating, ventilation, and air conditioning system service Interior: Trim, upholstery, dashboard, seat removal and installation Procedures Included Routine Maintenance: Oil changes, fluid checks, filter replacements Troubleshooting Guides: Systematic diagnostics for common and uncommon faults Component Removal Installation: Step-by-step instructions for all major components Torque Specifications: Detailed torque values for critical fasteners Special Tools: Identification and usage of specialized Nissan tools Technical Depth Depth Of Information: Complete disassembly and reassembly Diagnostic Capabilities: Advanced electronic diagnostics, sensor testing Illustrations Diagrams: Hundreds of detailed illustrations and diagrams Accessibility For Users: Suitable for DIY enthusiasts and professional mechanics 📊 Manual Specifications File Format File Type: PDF File Quality: High-resolution, searchable, bookmarked Printability: Printable pages Storage Options: Save to hard drive, burn to CD-ROM Print Quality Visual Elements: Detailed illustrations, diagrams, wiring schematics Binding Type Binding Description: N/A (Digital Download) Paper Type Paper Description: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Family: RB Series (Inline-6) Common Engine Variants: RB20DE (2.0L Naturally Aspirated), RB20DET (2.0L Turbocharged), RB26DETT (2.6L Turbocharged - GT-R variants) Performance Power Output Range: Varies by engine, typically 150-270+ horsepower for standard models, higher for GT-R Torque Output Range: Varies by engine, typically 180-350+ Nm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline Engine Management Ignition System: Distributor-based or distributorless ignition systems (depending on variant and year) 🔧 Transmission Standard Transmission Options: 5-speed manual transmission (FS5W71C commonly used) Optional Transmission Options: 4-speed automatic transmission (e.g., RE4R01A) Features Gear Ratios: Specific gear ratios detailed in the manual for each transmission type Fluid Specifications Manual Transmission Fluid: API GL-4 or GL-5, viscosity typically 75W-90 or 80W-90 (refer to manual for exact spec) Automatic Transmission Fluid: Nissan Matic D or equivalent (refer to manual for exact spec) 📐 Dimensions Exterior Body Styles: 2-door coupe, 4-door sedan, 4-door hardtop sedan, station wagon Weights Curb Weight Range: Approximately 1200-1500 kg depending on body style and drivetrain 🛡️ Safety Features Active Features Anti Lock Braking System: Optional on some models, detailed in manual Passive Features Seat Belts: Standard 3-point seat belts Airbags: Driver airbag optional on later models, not standard across all trims 💡 Technology Features Infotainment Audio System: Factory radio/cassette player, potential for aftermarket upgrades Driver Assistance Cruise Control: Optional on higher trims 🔧 Maintenance Service Intervals Oil Change Interval: Typically 5,000-7,500 km or 6 months (refer to manual for specific recommendations based on driving conditions) Spark Plug Replacement: Varies by plug type (copper, platinum, iridium), consult manual Timing Belt Replacement: Crucial for RB engines; typically every 80,000-100,000 km or 5 years (refer to manual for exact interval) Fluid Specifications Engine Oil Capacity: Approximately 4.5-5.0 liters (refer to manual for exact capacity and viscosity grade) Coolant Capacity: Approximately 7.0-8.0 liters (refer to manual for type and mixture) Known Issues Rb Engine Reliability: Generally robust, but turbocharger wear, oil consumption (especially if neglected), and cooling system issues can arise with age Electrical Gremlins: Corrosion of wiring harnesses and connectors is common in older vehicles Suspension Wear: Bushings and ball joints can wear out, affecting handling and ride quality 📚 Vehicle History Brand Heritage Nissan Motorsport Legacy: The R31 Skyline is a significant part of Nissan's performance heritage, predating the iconic R32 GT-R Model Evolution Generation Context: Third generation of the Nissan Skyline, introduced a new chassis and styling direction Production Production Period: 1985-1990 Notable Variants: GT-R (R31) - less common than later GT-Rs but significant for its RB26DETT engine, GTS-R homologation special 🏆 Awards...