🏷️ Basic Information

Make:

Triumph

Model:

TR6

Model Years Covered By Manual:

1969-1976

Market Segment:

Sports Car

👋 Introduction

Positioning:

The Triumph TR6 was a highly popular British sports car of the 1970s, known for its muscular styling, straight-six engine, and engaging driving experience. This parts manual is essential for owners and mechanics maintaining or restoring these classic vehicles.

Competitors:

Competed with vehicles like the MGB GT, Datsun 240Z, and Porsche 914 in its era. Its robust mechanicals and larger engine capacity set it apart.

Highlight:

Focuses on providing precise part numbers and diagrams, critical for sourcing correct replacement components for a classic vehicle often requiring specialized parts.

📋 Manual Details

Primary Coverage:

Parts Catalog / Parts Identification

Estimated Page Count:

200-400

Type:

Parts Catalog

Language:

English

Format:

Printed

📖 Manual Coverage

Engine Components:

Engine block, cylinder head, crankshaft, camshaft, pistons, connecting rods, valves, timing system, cooling system, lubrication system, fuel delivery system, exhaust system.

Transmission Drivetrain:

Gearbox (manual and overdrive), clutch assembly, driveshafts, differential, rear axle components.

Chassis Suspension:

Frame, front suspension (wishbones, kingpins, springs, shock absorbers), rear suspension (trailing arms, Panhard rod, springs, shock absorbers), steering rack, steering column, wheels, hubs.

Brakes Fuel:

Front disc brakes, rear drum brakes, master cylinder, brake lines, fuel tank, fuel lines, fuel pump, carburetors (Stromberg or Zenith), air filters.

Electrical Lighting:

Wiring harnesses, dynamo/alternator, starter motor, ignition system (distributor, coil, spark plugs), battery, lighting (headlights, taillights, indicators), dashboard instruments, switches, fuses.

Bodywork Trim:

Body panels (bonnet, doors, boot lid, wings), bumpers, grille, windscreen, side windows, convertible top mechanism, interior trim panels, seats, steering wheel, dashboard fascia.

Accessories Miscellaneous:

Windscreen wipers, heater, radio mounting, badges, emblems, nuts, bolts, fasteners, clamps.

Part Identification:

Detailed diagrams with exploded views for visual identification of all components and sub-assemblies.

Part Number Reference:

Includes original manufacturer part numbers for ordering and sourcing replacements.

Depth:

Comprehensive parts identification for all major mechanical, electrical, and body systems.

📊 Manual Specifications

Format Details:

Likely printed on durable paper, designed for workshop use. Potential for digital versions (PDF) to exist, but this listing specifies printed.

Quality:

Designed for clarity with detailed line drawings and part numbers. Print quality is essential for accurate part identification.

Binding:

Likely a robust binding such as spiral-bound or saddle-stitched to withstand frequent use in a workshop environment.

Paper:

Durable, possibly coated paper stock to resist grease and workshop conditions.

⚙️ Engine Specifications

Engine Type:

Inline 6-cylinder, Overhead Valve (OHV)

Displacement:

2498 cc (2.5 Liters)

Horsepower Gross:

104-114 hp (depending on market and emission controls)

Torque Gross:

130-137 lb-ft (depending on market and emission controls)

Carburetion:

Two Stromberg 175 CD SE twin-choke carburetors (US spec) or Zenith Stromberg 175 CD carburetors (UK/ROW spec).

Fuel Type:

Unleaded gasoline (historically leaded, but modern unleaded is standard).

Coolant Capacity:

Approximately 12 US pints (5.7 Liters) - specific capacity may vary slightly.

Oil Capacity W Filter:

Approximately 5.5 US quarts (5.2 Liters) - requires specific oil grade.

Common Engine Codes:

Z (European), ZI (US Spec)

🔧 Transmission

Transmission Type:

4-speed manual transmission

Overdrive Option:

Optional Laycock de Normanville overdrive (typically on 4th gear), often designated as 'J-Type'.

Gear Ratios:

Specific gear ratios are detailed within the manual for both standard and overdrive transmissions.

Clutch Type:

Single dry plate, hydraulically actuated.

Gearbox Oil Type:

Historically, SAE 90 hypoid gear oil. Modern equivalents may be recommended, consult specialists for appropriate API GL-4 or GL-5 classification.

📐 Dimensions

Length:

157.5 inches (4000 mm)

Width:

64.2 inches (1631 mm)

Height:

49.8 inches (1265 mm)

Wheelbase:

87.0 inches (2210 mm)

Curb Weight:

Approximately 2,400-2,600 lbs (1088-1179 kg)

Gvw:

Not commonly specified in this format, but gross vehicle weight would be curb weight plus payload.

Trunk Capacity:

Limited, typical for a 2-seater sports car.

🛡️ Safety Features

Crash Testing:

No formal crash test ratings from modern agencies (NHTSA, IIHS) exist for vehicles of this era.

Braking System:

Front disc brakes, rear drum brakes.

Steering:

Rack and pinion steering, typically unassisted.

Seat Belts:

Standard lap belts, with optional shoulder belts becoming more common as production progressed.

Windscreen:

Laminated safety glass.

Rollover Protection:

Convertible top structure provides minimal rollover protection. Aftermarket roll bars are available.

💡 Technology Features

Radio:

Optional factory-fitted radio or provision for aftermarket units. The manual will show mounting brackets and associated electrical connectors.

ABS:

Not available.

Airbags:

Not available.

Connectivity Features:

None.

Heater:

Factory heater system, parts for which will be cataloged.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000-5,000 miles or 6 months, depending on usage. Consult original workshop manuals for precise intervals.

Tune Up Interval:

Regular checks of ignition timing, carburetor synchronization, and valve clearances are crucial, often recommended annually or every 12,000 miles.

Brake Fluid Flush:

Recommended every 2 years due to moisture absorption.

Engine Oil Grade:

SAE 20W-50 is commonly recommended for classic engines, though consult specific workshop data for temperature ranges. Consider oil with ZDDP additive for flat-tappet camshaft protection.

Coolant Type:

A mix of distilled water and a quality anti-freeze/anti-corrosion additive (e.g., ethylene glycol based).

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid (glycol-based).

Chassis Corrosion:

Rust is a common issue, particularly around wheel arches, sills, and chassis outriggers. This manual's bodywork section is invaluable for identifying original parts for repair.

Engine Oil Leaks:

Common from seals and gaskets, especially around the oil filter housing and rear main seal.

Carburetor Issues:

Stromberg CD carburetors can be sensitive to tuning, diaphragm integrity, and synchronization. Proper part identification is key for rebuilds.

Electrical System Reliability:

Original wiring can be brittle and prone to corrosion. This manual helps identify specific connectors and wire types for replacement.

Suspension Wear:

Bushings, ball joints, and kingpins are wear items requiring regular inspection and replacement. The parts catalog will show all these components.

Example Part Number System:

Parts are typically cataloged with a numerical or alphanumeric system specific to British Leyland/Triumph. This manual provides these crucial identifiers.

📚 Vehicle History

Heritage:

Triumph is a historic British marque with a long lineage of sports cars, dating back to the early 20th century. The TR series represents the marque's commitment to affordable, fun-to-drive sports cars.

Predecessors:

The TR6 evolved from the TR4, TR250, and TR5, sharing many design elements and mechanicals with its predecessors, most notably the TR250/TR5 with its 2.5L inline-six engine.

Design Influence:

Designed by Karmann of Germany, featuring a distinctive body styling with a bluff front end and Kamm-tail rear, a significant departure from the Michelotti-styled TR4/TR5/TR250.

Production Years:

1969-1976

Production Volume:

Approximately 94,000 units produced.

Manufacturing Locations:

Coventry, England (Standard-Triumph factories).

🏆 Awards & Recognition

Market Reputation:

Consistently praised for its handling, performance for the price, and distinctive styling. A popular choice in classic car rallies and club events.

Classic Car Value:

Highly regarded in the classic car market, with values generally appreciating for well-maintained examples.