🏷️ Basic Information Identification Make: Triumph Model: Spitfire Year: 1971 Codes Chassis Code: Mk IV 👋 Introduction Market Position Positioning: Essential resource for owners and mechanics of the 1971 Triumph Spitfire Mk IV, targeting both DIY enthusiasts and professional workshops. Competitive Analysis Value Proposition: Provides comprehensive factory-level information typically only available to professional technicians, enabling owners to perform all aspects of maintenance, repair, and restoration. Key Features Features: Detailed step-by-step instructions, critical notes/cautions/warnings, clear illustrations and diagrams, troubleshooting and electrical diagnostics with wiring schematics. 📋 Manual Details Coverage Areas Primary Coverage: Full Service Repair Page Count Estimated Pages: Refer to actual manual for exact count (typically 300-600 pages for comprehensive manuals of this era) Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission, Clutch, Drivetrain, Exhaust System Chassis: Suspension (Front & Rear), Steering, Brakes (Front Disc, Rear Drum), Wheels & Tires Electrical: Ignition System, Charging System, Starting System, Lighting System, Instrumentation, Wiring Diagrams Body And Trim: Body Panels, Doors, Hood, Trunk, Interior Trim, Convertible Top Mechanism Procedures Included Maintenance: Lubrication, Fluid Changes, Filter Replacements, Tune-ups, Scheduled Maintenance Diagnostics: Troubleshooting Guides, Symptom-Based Diagnosis, Electrical System Diagnostics Repair: Engine Rebuild, Transmission Overhaul, Brake System Overhaul, Suspension Component Replacement, Electrical Component Repair Refurbishment Restoration: Detailed guidance for complete vehicle restoration, including disassembly and reassembly procedures. Technical Depth Depth: Comprehensive: Covers basic maintenance to full engine and transmission rebuilds. Includes detailed diagnostic procedures and wiring diagrams. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Full Printable Binding Type Binding: Digital Download (No physical binding) Paper Type Medium: Digital Software Requirements Reader: Adobe Acrobat Reader Extraction: WinRAR or equivalent for compressed files (if applicable) Compatibility Operating Systems: Windows and Mac OS ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-Cylinder, OHV Displacement: 1296 cc (79.1 cu in) Bore X Stroke: 73.7 mm x 76 mm (2.90 in x 3.00 in) Compression Ratio: 8.5:1 (typical for models of this era, check manual for specific variants) Performance Horsepower Gross: 75 bhp @ 5750 rpm (approximate, check manual for exact rating) Torque Gross: 75 lb-ft @ 3500 rpm (approximate, check manual for exact rating) Fuel System Carburetor: Twin Stromberg CD150 or SU HS2 carburetors Fuel Type: Unleaded gasoline (historically, leaded gasoline with an octane rating of 91-98 RON or 87-92 AKI was common; check manual for specific recommendations) Cooling System Coolant Type: Ethylene glycol based antifreeze/coolant mixture (50/50) Lubrication System Oil Capacity: 4.5 quarts (4.2 liters) with filter change (check manual for exact capacity) Recommended Oil: SAE 20W-50 (for classic engines; consult manual for specific viscosity based on climate and usage) 🔧 Transmission Standard Type: 4-speed manual transmission Optional Type: Laycock Overdrive (optional, often designated as J-Type or P-Type) Features Clutch: Hydraulically operated single dry plate clutch Fluid Specifications Transmission Fluid: GL-4 Hypoid Gear Oil (e.g., SAE 90 or 80W-90) Overdrive Fluid: Automatic Transmission Fluid (ATF), Dexron III or equivalent (if equipped with Laycock Overdrive) 📐 Dimensions Exterior Wheelbase: 2108 mm (83 inches) Length: 3715 mm (146.25 inches) Width: 1537 mm (60.5 inches) Height: 1156 mm (45.5 inches) (top up) Weights Curb Weight: Approx. 815 kg (1797 lbs) Gross Vehicle Weight: Approx. 1100 kg (2425 lbs) Wheels Tires Wheel Size: 13 inch steel wheels Tire Size: 155 SR 13 (typical fitment, check manual for variations) Bolt Pattern: 4 x 108 mm (4 x 4.25 inches) 🛡️ Safety Features Ratings Crash Safety: Not rated under modern standards; era-specific safety features. Active Features Braking System: Front: 9.375 inch (238 mm) hydraulic disc brakes. Rear: 7-inch (178 mm) hydraulic drum brakes. Steering: Rack and pinion steering Passive Features Seatbelts: Standard lap belts (three-point retractors often an optional or dealer-fitted upgrade) Windshield: Laminated safety glass 💡 Technology Features Infotainment Audio System: Basic AM radio (optional, often dealer or aftermarket installed) Instrumentation: Speedometer, Tachometer, Ammeter, Oil Pressure Gauge, Water Temperature Gauge, Fuel Gauge, Warning Lights Driver Assistance Features: None (no electronic driver aids, all control is manual). Connectivity Features: None (pre-dates automotive connectivity standards). 🔧 Maintenance Service Intervals Oil Change: Every 3,000 miles or 6 months (typical for the era; check manual for specific recommendations) Tune Up: Every 6,000-12,000 miles or annually (including ignition points, spark plugs, and carburetor adjustments) Valve Adjustment: Every 6,000-12,000 miles (essential for OHV engines) Fluid Specifications Brake Fluid: DOT 3 or DOT 4 brake fluid (hygroscopic, requires periodic replacement) Coolant Capacity: Approx. 10 pints (4.7 liters) (check manual for exact) Known Issues Common Problems: Rust (especially around wheel arches, sills, and chassis outriggers), weak rear springs, overdrive solenoid failure, oil leaks from engine and gearbox, ignition system reliability, potential carburetor icing in cold weather. Recommended Parts Oil Filter Part Number: Examples: Fram PH4, Wix 51348, Purolator L10024 (Note: Verify exact part numbers with the manual or parts catalog for the specific...