🏷️ Basic Information Identification Make: Triumph Model: TR4 Product Type: Parts Catalog / Parts Manual Product Title: TRIUMPH TR4 TR 4 Parts PART Manual CATALOUGE Generation Model Generation Code: TR4 👋 Introduction Market Position Historical Context: The Triumph TR4 was a key model in the popular 'Triumph Roadster' (TR) series, bridging the gap between the earlier TR3A and the later, more modern TR5/TR6. Competitive Analysis Key Competitors: MG MGB, Austin-Healey Sprite/Midget, Sunbeam Alpine Key Features Design Influence: Styled by Giovanni Michelotti, offering a more modern and European aesthetic compared to its predecessors. Target Audience: Enthusiasts seeking a classic British sports car with good performance and distinctive styling. Manual Value Proposition Restoration Support: Essential for restorers and owners undertaking any work requiring part identification and replacement. Part Sourcing Efficiency: Enables efficient and accurate sourcing of correct parts, minimizing errors and delays. 📋 Manual Details Coverage Areas Primary Coverage: All factory-specified parts for Triumph TR4 Major Assemblies Covered: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, Fuel System, Cooling System, Exhaust System, Body Panels, Interior Trim, Chassis Chassis Codes Covered: CT1/1L to CT53918L (TR4); CT53919L onwards (TR4A) Page Count Estimated Page Count: 200+ Manual Type Manual Type: Parts Catalog / Parts Manual Purpose: Identification and ordering of genuine and replacement parts Language Language: English Format Format: Printed Digital Availability: Likely available in PDF format through specialist suppliers 📖 Manual Coverage Systems Covered Engine Parts: Detailed illustrations and part numbers for engine block, cylinder head, pistons, crankshaft, camshaft, valves, timing gear, oil pump, manifolds, etc. Transmission Drivetrain Parts: Components for the gearbox (e.g., TR4 Four-Speed with Laycock Overdrive), clutch assembly, propshaft, differential, rear axle, hub bearings Suspension Steering Parts: Independent front suspension components (wishbones, kingpins, trunnions, coil springs, dampers), rear axle, trailing arms, leaf springs (TR4), half-shafts, steering rack, track rods, steering column Brake Parts: Front disc brake components (Girling or Lockheed), rear drum brake parts, master cylinder, wheel cylinders, brake lines, brake pads/shoes Electrical System Parts: Dynamo/alternator, starter motor, ignition system components (distributor, coil, spark plugs), wiring harnesses, lighting (headlights, taillights), dashboard instruments, switches, fuse box Fuel Cooling Exhaust Parts: Carburetor (Zenith Stromberg or SU), fuel pump, fuel lines, radiator, water pump, thermostat, exhaust manifold, pipes, silencer Bodywork Chassis Parts: Chassis frame, body panels (fenders, doors, bonnet, boot lid), bumpers, grille, windscreen, convertible top frame, interior trim panels, seats, dashboard fascia Procedures Included Part Identification: Visual identification through exploded diagrams and part number cross-referencing Assembly Disassembly Reference: Implicit guidance for reassembly by showing how parts fit together Technical Depth Depth: Detailed part number identification and illustration; not a repair manual, but essential for sourcing correct components. 📊 Manual Specifications File Format File Format Type: Print (original publication) Print Quality Diagram Quality: Typically black and white line drawings with clear labeling Binding Type Binding: Original binding would be stapled or perfect bound Paper Type Paper Quality: Standard paper stock for technical documentation of the era ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, OHV (Overhead Valve) Displacement Cc: 2138 Bore X Stroke Mm: 83.54 x 97.03 Engine Code: Standard 2.2L OHV (ST) or 2.5L OHV (on later TR4A with modifications) Performance Horsepower Bhp: 105 (at 4,750 rpm) Torque Lb-Ft: 132 (at 3,500 rpm) Fuel System Carburetion: Twin Stromberg CD2S or Zenith-Stromberg 175 CD2 carburetors Fuel Type: Unleaded gasoline (with appropriate octane rating, lead substitute may be advised for older engines) Cooling System Cooling Type: Water-cooled 🔧 Transmission Standard Transmission Type: 4-speed manual synchromesh Optional Overdrive: Optional Laycock de Normanville J-Type Overdrive (Engaging overdrive in 3rd and 4th gears) Features Clutch Type: Single dry plate, hydraulically operated Rear Axle Ratio: 3.73:1 (standard), 3.55:1 (with overdrive) 📐 Dimensions Exterior Wheelbase Mm: 2134 Front Track Mm: 1220 Rear Track Mm: 1206 Overall Length Mm: 3912 Overall Width Mm: 1454 Overall Height Mm: 1260 (hardtop), 1270 (convertible) Weights Unladen Weight Kg: 975 Gross Vehicle Weight Kg: 1315 🛡️ Safety Features Ratings Crash Testing Era: Pre-modern crash safety standards; minimal structural safety features by today's standards. Active Features Braking System: Front disc brakes (Girling 9-inch or Lockheed 10.5-inch), Rear drum brakes Steering System: Rack and pinion steering Passive Features Seatbelts: Lap belts often fitted as standard, shoulder belts may be optional or retrofitted. Body Construction: Body-on-frame construction with separate chassis 💡 Technology Features Infotainment Audio System: Original cars would have had basic AM radios; modern restorations often include upgraded sound systems. Driver Assistance ABS: Not equipped with Anti-lock Braking System (ABS) Airbags: Not equipped with airbags Connectivity Connectivity Features: None from the factory; modern installations may include Bluetooth or USB integration. 🔧 Maintenance Service Intervals Oil Change Interval Miles: Typically every 3,000 miles (or 5,000 km), or annually Grease Points: Regular greasing of kingpins, UJs, and other suspension/steering points is crucial (often weekly or bi-weekly for active use). Valve Adjustment: Recommended at 6,000-mile intervals Fluid Specifications Engine...