🏷️ Basic Information

Make:

Triumph

Model:

TR6

Model Alias:

TR 6

Product Name:

TRIUMPH TR6 TR 6 Service Repair Manual

Product Description:

TRIUMPH TR6 TR 6 SERVICE WORKSHOP REPAIR SHOP MANUAL

👋 Introduction

Positioning:

The Triumph TR6 is a classic British sports car renowned for its robust engineering and driving experience, appealing to enthusiasts seeking a pure, unfiltered motoring sensation.

Competitors:

Competed against other British sports cars of its era such as the MG MGB GT, Jaguar E-Type (though in a higher price bracket), and American muscle cars with a focus on convertible sports car appeal.

Defining Characteristics:

Powerful straight-six engine, body-on-frame construction, classic styling, responsive handling, and a strong enthusiast community.

📋 Manual Details

Primary Coverage:

Mechanical repair, maintenance, troubleshooting, and servicing

Electrical Coverage:

Wiring diagrams, electrical component testing, and troubleshooting

Body Coverage:

Bodywork repair, trim removal, and adjustments

Specification Coverage:

Torque values, fluid capacities, clearances, and tolerances

Estimated Pages:

Approx. 400-600 pages (typical for this era and vehicle type)

Type:

Service & Workshop Repair Manual

Language:

English

Format:

Digital (PDF) and/or Printed

📖 Manual Coverage

Engine:

2.5L (2498cc) Inline-6 (Standard Carbureted and Fuel Injected variants if applicable)

Cooling System:

Radiator, fan, water pump, thermostat, hoses

Fuel System:

Carburetors (SU, Stromberg), fuel pump, fuel lines, fuel tank

Ignition System:

Distributor, coil, spark plugs, wiring, ignition timing

Exhaust System:

Exhaust manifolds, pipes, mufflers, catalytic converter (if applicable for later models)

Transmission:

Manual (4-speed with overdrive optional), Automatic (optional)

Clutch:

Clutch assembly, hydraulic system, adjustments

Driveshaft And Axles:

Driveshaft, U-joints, differential, rear axles

Suspension:

Front independent suspension (wishbones, coil springs, telescopic dampers), Rear live axle, leaf springs, trailing arms

Steering:

Steering rack, column, universal joints, steering wheel

Brakes:

Front disc brakes, rear drum brakes, hydraulic system, brake lines, master cylinder, servo (optional)

Wheels And Tires:

Wheel specifications, tire sizes, pressure recommendations

Electrical System:

Battery, alternator, starter motor, lighting system, instrumentation, wipers, horn

Body And Chassis:

Body construction, chassis frame, doors, hood, trunk, bumpers, convertible top mechanism

Interior:

Dashboard, seats, upholstery, trim panels, carpeting

Heating And Ventilation:

Heater core, fan, ducting

Routine Maintenance:

Oil changes, filter replacements, tune-ups, lubrication points

Engine Rebuild:

Engine disassembly, inspection, component replacement, reassembly

Transmission Overhaul:

Manual and automatic transmission repair and rebuilding

Brake System Repair:

Calipers, pads, discs, drums, wheel cylinders, lines, master cylinder replacement and bleeding

Suspension And Steering Repair:

Ball joint replacement, bushing replacement, shock absorber replacement, steering rack overhaul

Electrical Troubleshooting:

Diagnosing and repairing electrical faults using wiring diagrams

Fuel System Diagnostics:

Carburetor adjustment and rebuilding, fuel pump testing

Ignition Timing Adjustment:

Setting ignition timing for optimal performance and emissions

Convertible Top Repair:

Mechanism adjustment and repair

Bodywork Restoration:

Panel replacement, welding, rust repair guidance

Depth:

Comprehensive, covering all aspects from routine maintenance to major overhauls and troubleshooting

Diagnostic Capabilities:

Detailed diagnostic procedures and troubleshooting trees for common and uncommon faults

Component Level Detail:

In-depth instructions for disassembling, inspecting, and rebuilding individual components

📊 Manual Specifications

Digital Format:

PDF (Searchable text, bookmarked chapters, printable)

Quality:

High-resolution scans for clear text and diagrams (for printed versions)

Binding:

Comb-bound or perfect bound (for printed versions), allowing for lay-flat use

Paper:

Durable, thick paper stock suitable for workshop environments (for printed versions)

⚙️ Engine Specifications

Engine Type:

2.5 Liter (2498 cc) OHV Inline-6

Bore X Stroke:

3.45 in x 3.54 in (87.3 mm x 89.9 mm)

Compression Ratio:

7.5:1 (typical, can vary slightly by market)

Horsepower:

104 bhp (77.5 kW) at 4500 rpm (net, for US market injection models); 101 bhp (75.3 kW) at 4500 rpm (net, for UK carbureted models)

Torque:

139 lb-ft (188 Nm) at 3000 rpm (net, for US market injection models); 132 lb-ft (179 Nm) at 3000 rpm (net, for UK carbureted models)

Carburetor Type:

Twin Stromberg CD200 or SU HS6 carburetors (depending on market and year)

Fuel Type:

Unleaded gasoline (91 octane or higher recommended)

Fuel Injection:

Lucas indirect fuel injection (on some later US market models)

🔧 Transmission

Transmission Type:

4-speed manual gearbox

Optional Transmission:

3-speed Borg-Warner automatic transmission

Overdrive:

Optional Laycock de Normanville overdrive (often fitted to 4-speed manual transmissions)

Manual Transmission Fluid:

GL-4 Gear Oil, SAE 80W/90 (check manual for specific grades)

Automatic Transmission Fluid:

Dexron III (or equivalent)

📐 Dimensions

Length:

154.5 in (3924 mm)

Width:

60.3 in (1532 mm)

Height:

49.3 in (1252 mm) (with soft top up)

Wheelbase:

86.3 in (2192 mm)

Front Track:

50.0 in (1270 mm)

Rear Track:

49.5 in (1257 mm)

Curb Weight:

Approx. 2,500 - 2,650 lbs (1134 - 1202 kg), depending on equipment

Gross Vehicle Weight Rating:

Approx. 3,150 lbs (1429 kg)

Payload Capacity:

Approx. 650 lbs (295 kg)

🛡️ Safety Features

Crash Test Data:

As a classic car from the 1970s, official crash test ratings (like modern NHTSA/Euro NCAP) are not available. Safety features are typical of the era.

Braking System:

Front disc brakes and rear drum brakes designed for the performance of the era.

Seatbelts:

Lap belts as standard, with optional three-point belts available or retrofitted.

Windscreen:

Laminated safety glass windscreen.

Roll Over Protection:

Windscreen frame offers some structural protection; aftermarket roll bars are common upgrades for enthusiasts.

💡 Technology Features

Audio System:

Typically a period-correct AM/FM radio, often with an optional 8-track player. Modern replacements are common.

Driver Aid Features:

Minimal by modern standards. Primarily focused on the driving experience rather than electronic aids.

Connectivity Features:

None as originally equipped. Modern upgrades can include Bluetooth or smartphone integration.

🔧 Maintenance

Oil Change Interval:

Every 3,000 miles or 6 months

Grease Points:

Lubricate chassis grease points every 1,000-2,000 miles

Tune Up Interval:

Every 6,000-12,000 miles or annually, including spark plugs, points, and ignition timing

Engine Oil Capacity:

7 US Pints (6.6 Liters) with filter change (SAE 20W/50 recommended for most conditions)

Coolant Capacity:

Approx. 10 US Pints (9.5 Liters) (50/50 Ethylene Glycol and Water)

Brake Fluid Type:

DOT 3 or DOT 4 hydraulic brake fluid

Differential Fluid Capacity:

Approx. 2.5 Imperial Pints (1.4 Liters) of SAE 90 hypoid gear oil

Common Wear Items:

Upholstery wear, dashboard cracks due to sun exposure, suspension bushings, clutch wear, gearbox synchromesh issues (especially in 2nd and 3rd gear), rust in common areas (wheel arches, sills, chassis outriggers).

Engine Concerns:

Carburetor synchronization and tuning, oil leaks from the rear crankshaft seal, potential for overheating if cooling system is neglected.

Electrical Faults:

Wiring harness degradation over time, faulty voltage regulators, Lucas electrical components can be temperamental.

📚 Vehicle History

Triumph Legacy:

Triumph Motor Company has a long and storied history in British automotive manufacturing, particularly known for its sporty roadsters like the TR series.

Predecessors:

The TR6 succeeded the TR5/TR250, continuing the lineage of Triumph's body-on-frame, straight-six engined sports cars.

Design Origin:

Styled by Karmann of Germany, featuring a muscular and aggressive design compared to its predecessors. It shared mechanical components with the Triumph Stag.

Production Years:

1968 - 1976

Manufacturing Location:

Coventry, England (Standard-Triumph) and Liverpool, England (for later models). The bodywork was initially by Karmann.

Sales Figures:

Approximately 94,600 units produced, with over 75% exported, primarily to North America.

🏆 Awards & Recognition

Classic Car Status:

The Triumph TR6 is widely recognized as a desirable classic British sports car and is a popular choice for rallies, shows, and general enthusiast ownership.

Enthusiast Reviews:

Consistently praised for its V8-like engine sound, engaging driving dynamics, and characterful styling by automotive journalists and owners.

Heritage Certification:

Cars may be eligible for heritage certification from Triumph-related organizations, verifying original specifications and build details.