🏷️ Basic Information Identification Make: Nissan/Datsun Model: Unknown (Engine Manual for FJ20) Codes Engine Code: FJ20 👋 Introduction Market Position Niche: Specialty performance engine manual for classic Datsun/Nissan enthusiasts and tuners. Competitive Analysis Competitors: Other period-specific service manuals, enthusiast forums, and specialized tuning guides. Key Features Value Proposition: Provides detailed, OEM-level information essential for maintaining, repairing, and optimizing the high-performance FJ20 engine. 📋 Manual Details Coverage Areas Engine Systems: FJ20 engine series (including FJ20E, FJ20ET, FJ20DET, FJ20T variants) Page Count Estimated Pages: 200-400 (typical for comprehensive workshop manuals) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Digital (likely PDF), potentially physical print 📖 Manual Coverage Systems Covered Engine Mechanical: Cylinder head, block, pistons, crankshaft, camshafts, valve train, timing system Fuel System: Fuel injection system (EFI), fuel pump, injectors, pressure regulator, fuel lines Ignition System: Ignition coils, spark plugs, distributor (if applicable), ECU control Lubrication System: Oil pump, oil filter, oil passages, oil cooler (if applicable) Cooling System: Radiator, water pump, thermostat, coolant passages, fan Exhaust System: Exhaust manifold, catalytic converter (if applicable), mufflers Turbocharging Intercooling: Turbocharger operation, wastegate, intercooler (for FJ20ET/DET) Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug replacement, timing belt inspection/replacement Diagnosis Troubleshooting: Fault finding, diagnostic trouble codes (DTCs), symptom-based troubleshooting Repair Overhaul: Engine disassembly, assembly, component replacement, torque specifications, machining data Recalibration Adjustment: Ignition timing, idle speed, fuel mixture (if applicable) Installation Removal: Engine removal and installation, component installation procedures Technical Depth Depth: Comprehensive from basic maintenance to full engine rebuilds, including specifications for machining and tolerances. 📊 Manual Specifications File Format Digital Format Details: Searchable text, high-resolution diagrams and illustrations, bookmark functionality. Print Quality Print Quality Attributes: Clear black and white text, crisp line drawings and diagrams, accurate photographic reproductions of components. Binding Type Binding: Spiral-bound or perfect-bound (for physical copies) for lay-flat use. Paper Type Paper Quality: Durable, glossy or semi-gloss paper stock to withstand workshop environments. ⚙️ Engine Specifications Primary Engine Engine Family: Nissan FJ Series Bore X Stroke: 85.0 mm x 83.0 mm (typical for FJ20) Displacement: 1998 cc (2.0 Liters) Configuration: Inline 4-Cylinder, DOHC (Double Overhead Camshaft) Performance Power Output Fj20E: Approx. 145-150 PS (143-148 hp) at 6400 RPM Torque Output Fj20E: Approx. 180-185 Nm (133-136 lb-ft) at 5200 RPM Power Output Fj20Et: Approx. 190-205 PS (187-202 hp) at 6400 RPM (Turbocharged) Torque Output Fj20Et: Approx. 240-275 Nm (177-203 lb-ft) at 4800 RPM (Turbocharged) Compression Ratio Fj20E: 9.5:1 (typical) Compression Ratio Fj20Et: 8.3:1 (typical for turbocharged) Fuel System Induction: Naturally Aspirated (FJ20E), Turbocharged (FJ20ET/DET) Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (Octane rating specified in manual) Valvetrain Design: DOHC, 4 valves per cylinder (16 valves total) Timing Drive: Timing Belt 🔧 Transmission Standard Type: Manual Transmission (e.g., 5-speed) likely paired with FJ20 engines. Optional Type: Automatic Transmission (less common with performance variants like FJ20). Features Gear Ratios: Specific gear ratios will be detailed in the manual for different models/transmissions. Fluid Type: GL-4 or GL-5 manual transmission fluid (specific grade and capacity in manual). 📐 Dimensions Exterior Vehicle Models: Primarily Nissan Silvia (S110/S12), Gazelle, possibly Fairlady Z (Z31 with FJ20 variant). Interior Engine Bay Layout: The manual will cover the engine's physical dimensions and fitment within the engine bay for the applicable chassis. Weights Engine Weight: Estimated wet weight around 150-160 kg (specifics in manual). 🛡️ Safety Features Ratings Historical Context: Safety standards from the era of FJ20 engine production (late 1970s to mid-1980s) differ significantly from modern standards. Manual will not cover modern safety ratings. Active Features Engine Management: Early electronic engine management systems (ECU) for fuel and ignition control are covered. Passive Features None Engine Specific: Manual focuses on mechanical and electrical aspects of the engine, not vehicle-level passive safety features. 💡 Technology Features Infotainment Era Context: Infotainment systems of the FJ20 era were basic, typically including AM/FM radio and cassette player. Manual will not cover infotainment. Driver Assistance Era Context: Driver assistance technologies were virtually non-existent for engines of this period. Focus is on mechanical and electronic engine control. Connectivity Era Context: No vehicle connectivity features relevant to engine operation in the modern sense. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 - 10,000 km or 6 months (refer to manual for specific recommendation based on usage). Timing Belt Interval: Every 80,000 - 100,000 km or 5-7 years (critical for DOHC engines, refer to manual). Spark Plug Replacement: Every 30,000 - 50,000 km (depending on plug type). Fluid Specifications Engine Oil Type: API SG or higher, SAE 10W-30 or 10W-40 (refer to manual for exact viscosity and capacity). Coolant Type: Ethylene glycol-based antifreeze, 50/50 mix with distilled water. Brake Fluid: DOT 3 or DOT 4 (specific requirement in manual). Power Steering Fluid: Dexron II/III or equivalent (if power steering equipped). Known Issues Oil Consumption: Can occur with age and...