CHOOSE YOUR SIX-CYLINDER TR

The 2498cc straight-six fitted to Michelotti’s TR4A body creates the new TR5 for 1967. It offers 150bhp from Lucas fuel injection for Uk-market cars, resulting in 121mph, with twin carburettors and 105bhp for Us-spec TR250.

A replacement for the TR5 is required, but money is short so the job passes to Karmann of Germany, which leaves the central tub the same, but changes front and rear panelling to produce 1969’s TR6. NON-US TR6 PIS are fuel-injected with 150bhp; US ones have twin Stromberg carburettors and 104bhp.

Gear ratios are altered in 1971 to rationalise them with the Triumph Stag.

At the end of 1972, power on the PI models drops by 17bhp in an attempt to make the car more refined and the engine less stressed.

A lip spoiler and overdrive become standard as part of 1973’s improvements.

UK TR6 deleted in 1975 and US exports cease in 1976, after 255,571 separate-chassis TRS built.