Triumph TR 4 IRS Red '67

The Triumph TR4 was  introduced in 1961. Code named "Zest" during development, the car was based on the chassis and drivetrain of the previous TR sports cars, but with a modern Michelotti styled body. 40,253 cars were built during production years. The TR4 proved very successful and continued the rugged, "hairy-chested" image that the previous TRs had enjoyed.

The new TR4 body style did away with the classical cutaway door design of the previous TRs to allow for wind-down (roll-up) windows (in place of less convenient side-curtains), and the angular rear allowed a boot (trunk) with considerable capacity for a sports car.

In 1965, the  TR4A IRS (Iindependent Rear Suspension) superseded the TR4. Apart from the rear suspension, which used trailing arms and a differential bolted to the redesigned chassis frame and a number of small styling changes and refinements, the two models appear nearly identical. In fact, an estimated 25 per cent of TR4As were not equipped with IRS, but instead reverted to a live axle design similar to the TR4, which was adapted to fit the new

•  Specifications
• Bodywork
• Length: cm (in): 394 (155.1)
• Width: cm (in): 147 (58)
• Height: cm (in): 127 (50)
• Wheelbase: cm (in): 224 (88)
• Weight: kg (lb): 965 (2130)
• Mechanics.
• Displacement: straight-four 2138 cc (130 ci), front-mounted
• Valve gear: 8
• Fuel system: 1 Stromberg carburettor
• Gearbox: 4-speed manual
• Driven wheels: rear-wheel drive
• Maximum power: 104 bhp at 4700 rpm
• Maximum torque: 147 Nm at 3000 rpm
• Maximum speed: 175 km/h (109 mph)
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