1967, Triumph, TR4A IRS
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Category
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PostedOct 14, 2025
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Views83
Year
1967
Brand/Make
Triumph
Model
TR4A IRS
Description
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. 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 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%. The car was fitted with overdrive on 2nd, 3rd, 4th gear giving it a total of 7 different gear ratios.
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%. The car was fitted with overdrive on 2nd, 3rd, 4th gear giving it a total of 7 different gear ratios.
Modifications on this car
This was my first car.
The previous owner had ported and polished the cyclinder head, giving the car an addtional 20hp. I could easily get to 120 mph with this modification. The stock cars top speed was 109 mph.
The previous owner had ported and polished the cyclinder head, giving the car an addtional 20hp. I could easily get to 120 mph with this modification. The stock cars top speed was 109 mph.
Vehicle Still Registered
UNSURE
Maximum Speed
120 mph
Acceleration 0-60mph
10.9 Seconds
1/4 Mile
18.0 Seconds
Engine Cylinders
Inline 4
Engine Capacity
2138 cc
Engine Power
124 HP
Engine Torque
179 Nm
Induction
Naturally Aspirated
Fueling Method
Carburetor
Carburetors
2
Fuel
Petrol
Transmission
Manual
Gears
7 Speed
Drivetrain
Front wheel drive- Rear wheel drive
- Four wheel drive
- Limited slip differential
- Overdrive