🏷️ Basic Information Identification Make: Datsun Model: 240Z Year: 1973 Codes Chassis Code: HLS30 Engine Code Primary: L24 👋 Introduction Market Position Positioning: Essential resource for Datsun 240Z owners and enthusiasts looking to perform their own maintenance and repairs. Competitive Analysis Advantage: Provides in-depth, professional-level information often found only in factory service manuals, at a fraction of the cost and with instant accessibility. Key Features Ease Of Use: Designed for clarity with step-by-step instructions and visual aids, making complex repairs accessible to DIY enthusiasts. Cost Savings: Empowers owners to save significantly on labor costs by performing their own maintenance and repairs. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Routine Maintenance Page Count Estimated Page Count: Varies (Digital format, but comprehensive) Manual Type Type: Professional Workshop/Shop Manual Language Language: English Format Format: PDF Accessibility: Downloadable (PC, MAC, Tablets, Smartphones) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, tuning, lubrication, cooling system Engine Electrical: Ignition system, starting system, charging system, fuel injection/carburetion systems Transmission: Manual transmission (4-speed and optional 5-speed), clutch system, drive shafts, differential Suspension: Front and rear suspension components, alignment specifications Brakes: Front disc brakes, rear drum brakes, hydraulic system, parking brake Steering: Steering gearbox, steering linkage, power steering (if equipped) Fuel System: Fuel tank, fuel lines, fuel pump, carburetors (Hitachi SU or similar) Electrical System: Lighting, instrumentation, wiring diagrams, fuses, relays Body And Chassis: Body panel repair, interior trim, glass, doors, windows Procedures Included Troubleshooting: Systematic diagnostic procedures for common and complex issues Repair Procedures: Step-by-step instructions for component removal, installation, and adjustment Maintenance: Scheduled maintenance, fluid changes, lubrication points, filter replacements Specifications: Torque values, clearances, timing settings, fluid capacities, wear limits Wiring Diagrams: Detailed electrical schematics for all systems Technical Depth Depth: Comprehensive, from basic tune-ups to full engine rebuilds and electrical system diagnostics 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Print Quality Quality: Professional quality, clear images and diagrams Binding Type Type: Digital Download (No physical binding) Paper Type Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, SOHC Displacement: 2393 cc (2.4 Liters) Bore X Stroke: 83.0 mm x 73.7 mm Compression Ratio: 8.8:1 Performance Horsepower Gross: 151 hp @ 5600 rpm (approx.) Torque Gross: 193 lb-ft @ 4400 rpm (approx.) Fuel System Carburetion: Dual Hitachi-SU constant velocity carburetors Fuel Type: Unleaded gasoline (Premium) Ignition System Ignition Type: Distributor, Coil, Spark Plugs Lubrication Oil Capacity With Filter: 4.5 Quarts (4.3 Liters) 🔧 Transmission Standard Transmission Type: 4-speed Manual Optional Transmission Type: 3-speed Automatic (Less common) Features Clutch Type: Single dry plate, hydraulic actuation Rear Axle Ratio: 3.54:1 (Typical) Fluid Specifications Manual Transmission Fluid: API GL-4 SAE 80W-90 Gear Oil (e.g., Valvoline, Red Line) Automatic Transmission Fluid: Dexron III or equivalent (if equipped with automatic) 📐 Dimensions Exterior Length: 163.1 inches (4143 mm) Width: 64.2 inches (1631 mm) Height: 50.6 inches (1285 mm) Wheelbase: 90.7 inches (2301 mm) Weights Curb Weight: 2,510 lbs (1139 kg) (approx.) 🛡️ Safety Features Ratings Crash Testing: Limited historical data for this era, but designed with crumple zones and safety cage. Active Features Brakes: Front disc brakes, Rear drum brakes Steering: Rack and pinion steering Passive Features Seat Belts: Lap and shoulder belts Windshield: Laminated safety glass 💡 Technology Features Infotainment Audio System: Factory AM/FM radio, often with a single speaker. Aftermarket upgrades are common. Driver Assistance Features: None (vehicle predates modern driver assistance systems). Connectivity Features: None. 🔧 Maintenance Service Intervals Oil Change: Every 3,000 miles or 3 months Tune Up Points: Inspect/adjust ignition points and condenser every 6,000 miles Spark Plugs: Replace every 12,000 miles (or as specified by plug type) Valve Adjustment: Check/adjust valve clearances every 12,000 miles Fluid Specifications Engine Oil Type: API SF or SG, SAE 10W-30 or 10W-40 (check manual for specific ambient temperature ranges) Coolant: 50/50 mix of ethylene glycol antifreeze and distilled water Brake Fluid: DOT 3 or DOT 4 glycol-based brake fluid Known Issues Rust: Prone to rust, especially in floor pans, rocker panels, and battery trays. Carburetor Issues: Hitachi-SU carburetors can be finicky and require proper adjustment and rebuilding. Electrical Gremlins: Older wiring harnesses can degrade, leading to intermittent electrical problems. Rear Axle Seals: Leaking rear axle seals are a common maintenance item. 📚 Vehicle History Brand Heritage Brand Origin: Datsun (later Nissan) is a Japanese automotive brand with a history of producing reliable and sporty vehicles. Model Evolution 240Z Introduction: The Datsun 240Z (Fairlady Z in Japan) was introduced in 1969 and quickly became a global sensation for its performance, styling, and affordability. 1973 Model Year: The 1973 model year represents the final year of the S30 generation's 2.4-liter engine, before the introduction of the 260Z. Production Production Period: 1970-1973 (for the 240Z designation) Market Impact: Credited with popularizing the affordable sports car segment and inspiring many subsequent...