TR-4 IS RUGGED, FAST AND STABLE

30Jul11

Australian Motor Sports Jan 1965

The TR-4 is no beauty but has a tough, purposeful appearance

It has   been   said   that   designer   Michelotti sketched  out the Triumph TR-4  in   a  little more than 30 minutes and his doodling paid off.

Although no one can say the TR-4 is a beautiful machine in design, it is a sports car that suggests speed and ruggedness. And when it comes to technicalities, the TR-4 is miles ahead of the previous TR-3.

Standard-Triumph – raised the compression ratio to 9:1 and raised the displacement from 1991 cc to 2138 cc (by altering the cylinder bore from 83 mm to 86 mm).

Everything else on TR-3 was left alone, such as the stroke measurement, carburettor sizes, port shapes, cam form and head design. This gave the TR-4 more torque rather than a bigger increase in power.

It develops 105 bhp (five more than the TR-3) at 4600 rpm (400 per minute slower than the previous model).

Optional overdrive

And Standard-Triumph didn’t forget to give the TR-4 a fully-synchromesh gearbox. The Laycock overdrive, which operates on second, third and top gears, is an option.

The cabin features an impressive instrument panel, comprising speedo-tacho meters, oil pressure gauge, fuel gauge, water thermometer, ammeter, push-pull knobs for choke, lamps, wipers and windscreen washers.

The bucket seats are comfortable and form-fitting, and entry to’the car is not as difficult as it appears.

The TR-4 is a great improvement on the 3 when it comes to road holding and comfortable riding. It is also quieter and easier to handle.

At extra cost you can also have the TR-4 fitted out with such optionals as competition front springs and rear shock absorbers, a trunk-fitting suitcase, leather uphol­stery (PVC leather cloth is standard), racing screens and different brands of high-speed racing tyres.

Australian Motor Sports Jan 1965

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