M-R-S A-80
Power
134 hp
Production
1964-1967
Engine
Detroit Diesel 4-71, 4-cylinder
Weight
15800 lbs [7166 kg]
Drive
4WD
Introduction
M-R-S A-80 Four-Wheel Drive Tractor
The M-R-S A-80 is a heavy-duty four-wheel drive tractor manufactured between 1964 and 1967 in Flora, Mississippi, USA. Designed for demanding agricultural and earthmoving applications, this machine is characterized by its significant weight and specialized steering system.
Engine and Performance
The tractor is powered by a liquid-cooled Detroit Diesel 4-71, a 4-cylinder diesel engine with a displacement of 283.7 cubic inches (4.6 liters). It produces 134 horsepower (99.9 kW) at a rated speed of 2000 RPM. The engine utilizes an electric starter system for reliable ignition.
Transmission and Drivetrain
The drivetrain features a 4x4 configuration, providing power to all four wheels for enhanced traction. The transmission system offers 10 forward speeds and 2 reverse speeds, allowing for a variety of operating ranges. The machine is equipped with power four-wheel steering, which improves maneuverability for a tractor of this size.
Dimensions and Chassis
With a wheelbase of 100 inches (254 cm) and a total weight of 15,800 lbs (7,166 kg), the A-80 is built for stability during heavy traction work. The tractor stands 132 inches (335 cm) high and measures 195 inches (495 cm) in length. It features a ground clearance of 14 inches (35 cm) and is fitted with 16.9x30 agricultural tires on both the front and rear axles. The operator station is of the open type.
Conclusion
The M-R-S A-80 is designed for heavy-duty agricultural operations requiring high drawbar pull and all-wheel traction. Its robust mechanical design and specific four-wheel steering capabilities position it as a specialized machine for operators needing sustained power and stability in varied field conditions.
Production Information of M-R-S, A-80
- Four-wheel Drive (4WD) tractor
- Built in Flora, Mississippi, USA
| Manufacturer | M-R-S |
|---|
Dimension and Tires Information of M-R-S, A-80
| Front tread | 80 inches [203 cm] |
|---|---|
| Wheelbase | 100 inches [254 cm] |
| Weight | 15800 lbs [7166 kg] |
| Height (cab) | 132 inches [335 cm] |
| Length | 195 inches [495 cm] |
| Rear tread | 80 inches [203 cm] |
| Ground clearance | 14 inches [35 cm] |
| Width | 111 inches [281 cm] |
| Ag front | 16.9x30 |
|---|---|
| Ag rear | 16.9x30 |
Engine Specifications of M-R-S, A-80
- Detroit Diesel 4-71
- Liquid-cooled
- Diesel
- 4-cylinder
| Power | 134 hp [99.9 kW] |
|---|---|
| Displacement | 283.7 ci [4.6 L] |
| Rated RPM | 2000 |
| Bore/Stroke | 4.25x5.00 inches [108 x 127 mm] |
| Starter type | Electric |
Transmission Information of M-R-S, A-80
Transmission variants 1
| Gears | 10 forward and 2 reverse |
|---|
Mechanical Specs of M-R-S, A-80
- Power four-wheel steering
- Open operator station.
| Drive | 4x4 4WD |
|---|
Power Information of M-R-S, A-80
| Engine | 134 hp [99.9 kW] |
|---|---|
| Drawbar (claimed) | 115 hp [85.8 kW] |
Where it sits
With 134 HP, the M-R-S A-80 sits between A-90 (123 HP) and A-80B (141 HP) in M-R-S's range. Its power puts it in the 93th percentile of 1960s models in our database (709 machines).
Frequently asked questions
How much horsepower does the M-R-S A-80 have?
The M-R-S A-80 delivers 134 HP.
What years was the M-R-S A-80 produced?
The M-R-S A-80 was produced in 1964-1967.
What engine does the M-R-S A-80 have?
The M-R-S A-80 is powered by a Detroit Diesel 4-71, 4-cylinder engine.
How much does the M-R-S A-80 weigh?
The M-R-S A-80 weighs 15800 lbs [7166 kg].
Is the M-R-S A-80 4WD?
The M-R-S A-80 is available in 4WD.