Triumph owners, independent repair shops, classic car enthusiasts, and restoration specialists.
Competitive Analysis
Value Proposition:
Offers comprehensive, authoritative guidance for maintaining and repairing a wide range of classic Triumph models, crucial for preserving their value and performance.
Key Features
Breadth Of Coverage:
Covers multiple iconic Triumph models, providing a centralized resource for a significant portion of the brand's popular heritage vehicles.
Depth Of Detail:
Goes beyond basic maintenance to include in-depth repair procedures, technical specifications, and troubleshooting, suitable for professional mechanics.
Historical Significance:
Essential for owners of classic Triumphs, ensuring correct maintenance and repair practices to maintain originality and historic integrity.
📋 Manual Details
Coverage Areas
Manual Type:
Workshop Repair Manual
Language:
English
Format:
Digital Download (PDF)
Page Count:
Comprehensive (specific count not provided, assumed extensive for workshop level)
Details on automatic transmission systems, if applicable to specific models covered. (Note: Many Triumph models were manual).
Suspension:
Front suspension (independent, often with wishbones and coil springs), rear suspension (live axle, leaf springs or trailing arms), shock absorbers, bushings, alignment specifications.
Steering:
Steering rack, steering column, linkages, power steering systems (if equipped), steering wheel removal, lubrication.
Wiring diagrams, battery, charging system (alternator/dynamo), starting system (starter motor), lighting system (headlights, taillights, indicators), instrumentation, fuses, relays, switches, ignition switch, wiper system.
Bodywork:
Body panel removal and installation, door mechanisms, window regulators, convertible top mechanisms, body shell repair, jacking points, underbody protection, interior trim.
Heating And Ventilation:
Heater matrix, blower motor, ducting, air vents, demister system.
1.1L, 1.3L, 1.5L (Herald/Dolomite), 1.3L, 1.5L (Spitfire), 2.0L Inline-6 (GT6), 3.0L V8 (Stag – note: manual may focus more on Inline-6 due to availability).
Horsepower Range:
Approximately 40-100 bhp depending on engine size and tune.
Torque Range:
Approximately 55-120 lb-ft depending on engine size and tune.
Fuel System
Carburetion:
Dual SU carburetors (e.g., Stromberg CD series) common on performance models, single or twin Stromberg/SU on smaller engines. Specific jet sizes and needle types detailed.
Fuel Type:
Historically designed for leaded or unleaded gasoline (manual will specify appropriate grades and octane ratings). Fuel pump types (mechanical, electric).
🔧 Transmission
Standard
Transmission Type:
Four-speed manual transmission with optional overdrive (Laycock de Normanville overdrive often fitted to TR series and others). Column shift on some early models, floor shift on most.
Optional
Automatic Transmission:
Optional on some models like the Triumph Stag (BW35 or BW65 Automatic Transmission). Manual will detail servicing and repair for these.
Features
Gear Ratios:
Specific gear ratios for each model and transmission variant provided for diagnosis and rebuilding.
Clutch Type:
Single dry plate diaphragm clutch. Manual details clutch plate, pressure plate, and release bearing replacement and adjustment.
Transmission Fluid:
Specifications for manual gearbox oil (e.g., GL4 or GL5, specific viscosity grades like 75W-90 or 80W-90) and automatic transmission fluid (e.g., Dexron II for older autos).
Ranges from approx. 82 inches (Herald) to 91 inches (Stag, TR6).
Typical Track Width:
Varies by model, specific figures provided in manual for alignment.
Tire Sizes:
Common sizes include 155SR13, 165SR13, 175/70R13, 185HR15, 205/60VR15 depending on model and trim.
Weights
Kerb Weight:
Typically 1500 - 2700 lbs (680 - 1225 kg) depending on model.
🛡️ Safety Features
Ratings
Crash Testing:
Modern crash test ratings are not applicable as these vehicles predate standardized testing. Manual will focus on original safety features.
Active Features
Braking System Type:
Disc front brakes with drum rear brakes are common. Later models and higher trims may have four-wheel disc brakes (e.g., Stag, TR6). Manual details system operation and maintenance.
Steering Configuration:
Recirculating ball steering system. Some later models or conversions may have rack and pinion.
Passive Features
Seatbelts:
Provision for seatbelts, often lap belts standard, three-point belts available as optional or retrofitted. Manual will cover seatbelt anchor points.
Body Construction:
Body-on-chassis construction for many models, with separate steel body panels. Manual covers panel alignment and basic structural repair.
💡 Technology Features
Infotainment
Audio Systems:
Original systems were basic AM/FM radios, often with cassette players. Manual may cover radio removal/installation and basic speaker wiring.
Driver Assistance
ABS:
Anti-lock Braking Systems were not standard or commonly available on most models covered. If fitted as an aftermarket or late-model option, manual may have limited coverage.
Connectivity
Original Connectivity:
Limited to basic vehicle functions. Modern connectivity (Bluetooth, USB) would be aftermarket additions.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 3,000 miles or 6 months for older vehicles. Manual will provide specific recommendations based on oil type and usage.
Tune Up Interval:
Spark plug gap checks, ignition timing adjustments, and carburetor adjustments recommended annually or every 6,000-10,000 miles.
Coolant Change Interval:
Every 2 years or as per glycol type. Manual specifies appropriate coolant types and additives.
Fluid Specifications
Engine Oil Type:
API SG or SH rated oils, SAE 20W-50 or 10W-40 common for classic engines. Manual specifies viscosity and API rating.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid. Manual will detail flush and bleeding procedures.
Coolant Specification:
Ethylene glycol-based antifreeze. Manual will specify mix ratios and corrosion inhibitor requirements.
Known Issues
Engine Oil Leaks:
Common due to age and rubber seal deterioration. Manual details gasket and seal replacement procedures.
Carburetor Icing Or Gumming:
Can occur with infrequent use or poor fuel quality. Manual provides cleaning and rebuilding steps.
Rust And Corrosion:
A common issue with British cars of this era, particularly in areas prone to salt. Manual covers body repair and rust prevention.
Electrical Gremlins:
Wiring can degrade over time. Manual's wiring diagrams are critical for diagnosis.
📚 Vehicle History
Brand Heritage
Manufacturer Origin:
British, part of the Leyland Motor Corporation for much of this period. Known for producing sporty, affordable cars.
Model Evolution
Triumph Herald:
Produced 1959-1971. Known for its innovative chassis design and unique styling. Available in various body styles.
Triumph Spitfire:
Produced 1962-1980. A small, affordable British sports car with body-on-chassis construction, evolving through several 'Mk' versions.
Triumph Vitesse:
Produced 1962-1971. Essentially a GT version of the Herald with a more powerful 6-cylinder engine.
Triumph Gt6:
Produced 1963-1973. A sporty coupe based on the Spitfire chassis but featuring the 2.0L straight-six engine from the Vitesse and a fixed roof.
Triumph Stag:
Produced 1970-1977. A four-seater grand tourer known for its luxurious styling and the powerful 3.0L V8 engine. Developed by Triumph's design studio.
Triumph Dolomite:
Produced 1970-1980. A range of executive saloons and sporty coupes, most famously the Dolomite Sprint with its 16-valve OHC engine.
Triumph Tr Series:
Includes TR4, TR5 (fuel-injected), TR6. Iconic British sports cars known for their robust engineering and sporting performance.
Triumph Acclaim:
Produced 1981-1984. A badge-engineered Honda Ballade, representing Triumph's final passenger car model before the marque's demise.
Production
Manufacturing Locations:
Primarily Coventry, England. Some models may have had assembly or components from other Leyland plants.
🏆 Awards & Recognition
Recognitions
Classic Car Status:
Many Triumph models are highly regarded as classic cars, collectible, and eligible for historic vehicle status and events.
Ratings
Owner Satisfaction:
Owners often praise the driving dynamics and character of Triumph sports cars, despite the maintenance demands.
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