The Triumph TR4A is a sports car built by the Triumph Motor Company at its Coventry factory in the United Kingdom from 1965 to 1967.[2] It is an evolution of the Giovanni Michelotti styled TR4, with the TR4's Hotchkiss drive replaced by an independent rear suspension, indicated by an "IRS" badge attached to the car's rear.
The TR4A's rear suspension is a semi-trailing arm system with coil springs and lever-arm shocks. It more closely resembles that of the Triumph 2000 than the swing axle systems used in the Herald or Spitfire. The chassis was redesigned to accommodate the new suspension, with extensive changes to the side members and cross-bracing. After the redesign, reviewers noted the car's better ride comfort, although some felt that handling had not improved.[3]
The chassis revisions resulted in a car roughly 22 mm (0.87 in) wider than the TR4, although length and height were unaffected. The wheelbase is 3 mm (0.12 in) shorter. The front track is unchanged, while the rear track grew by 13 mm (0.51 in) with the IRS. The car is heavier by 50 kg (110 lb).
Although consideration was given to both an enlarged 2.5 litre four-cylinder or a six-cylinder engine, the TR4A used the same long-stroke, high-torque Standard four-cylinder wet-sleeve engine as the TR4. While the bore, stroke, and displacement remained the same, changes to the cylinder head and manifolds raised net power to 104 bhp (78 kW), an increase of 4%, and torque to 132 lb⋅ft (179 N⋅m), an increase of 10%.
Apart from the increase in width and the IRS badge on the rear of the car, other changes include a revised grille and new bonnet badge. There is also a new piece of chrome trim on the side, starting near the rear edge of the door and ending at the front of the car with integrated signal/marker lights, which were moved from their earlier position in the corners of the grille. New smaller front bumpers and a convertible top patterned after the one from the Herald complete the exterior differences. On the interior the fly-off handbrake lever is moved to the transmission tunnel between two revised seats, the gearshift lever is shortened, and Fascias in all cars are covered with walnut, which had been optional in the TR4.
This vehicle is very nice and drives extremely well. This is as nice a vehicle as you would want without spending a fortune on a concours 100-point car. This vehicle has very minor blemishes and needs nothing but someone that wants to have fun. It can be seen locally here at MMG and is part of the owner's personal collection. No dealer calls please.
