| Manufacturer |
Massey-Harris |
| Price |
- |
| Model |
101 Junior |
| Equipment Type |
Row-Crop Tractors |
| Factory |
Racine, Wisconsin, USA |
NEBRASKA TRACTOR TEST 318 2
| Description |
124 gasoline 4-speed 2WD May 22 - 26, 1939 Link: Nebraska Tractor Test 318 file Drawbar performance Gear 3 used for power test Gear 1 used for pull test |
| Belt power (max) |
26.27hp / 19.6kW |
| Belt fuel use (max) |
2.4gal/hour / 9.1l/hour |
| Max power |
20.47hp / 15.3kW |
| Max pull |
3,079lbs / 1396kg |
NEBRASKA TRACTOR TEST 2
| Description |
140 gasoline 4-speed 2WD October 7 - 12, 1940 Link: Nebraska Tractor Test file Drawbar performance Gear 3 used for power test Gear 1 used for pull test |
| Belt power (max) |
30.56hp / 22.8kW |
| Belt fuel use (max) |
2.6gal/hour / 9.8l/hour |
| Max power |
24.65hp / 18.4kW |
| Max pull |
3,278lbs / 1486kg |
MASSEY-HARRIS 101 JUNIOR POWER
| Drawbar (claimed) |
20.5hp / 15.3kW |
| PTO (claimed) |
26.3hp / 19.6kW |
| Plows |
2 |
| Drawbar (tested) |
24.65hp / 18.4kW |
| Belt (tested) |
30.56hp / 22.8kW |
ENGINES OVERVIEW
The Massey-Harris 101 Junior is equipped with a variety of Continental gasoline engines, with options of 2.0L, 2.3L, and 2.7L 4-cylinder configurations. Key advantages include versatility for different applications, with increasing power capacity from the smaller 2.0L to the more robust 2.7L engine, accommodating different operational demands. However, potential challenges may arise in fuel efficiency and maintenance complexity, notably as displacement increases.
| Description |
Continental 2.0L 4-cyl gasoline Continental 2.3L 4-cyl gasoline Continental 2.7L 4-cyl gasoline |
ENGINE DETAIL 1
The Massey-Harris 101 Junior features a Continental gasoline 4-cylinder engine with a modest displacement of 2.0L, optimized for reliable low-RPM operation at 1500 RPM. Its low compression ratio of 6.7:1 and oil bath air cleaner enhance engine longevity and maintenance efficiency, albeit potentially limiting power output for heavier workloads. Ideal for small-scale farms or vintage tractor enthusiasts, this model offers nostalgia and simplicity but may struggle with modern agricultural demands due to its lower engine performance and older technology.
| Description |
Continental gasoline 4-cylinder liquid-cooled vertical L-head Original engine, used until 1940 |
| Displacement |
123.7ci / 2.0L |
| Bore/Stroke |
3.00x4.375inches / 76x 111mm |
| Air cleaner |
oil bath |
| Compression |
6.7:1 |
| Rated RPM |
1500 |
| Starter volts |
6 |
| Coolant capacity |
11qts / 10.4L |
ENGINE DETAIL 2
The Massey-Harris 101 Junior tractor features a Continental MFA gasoline engine with a displacement of 139.6 ci, offering ample torque for fieldwork within its rated RPM of 1800. Its oil bath air cleaner allows for better filtration in dusty conditions, although maintenance may be more involved compared to modern dry systems. The 6-volt starter system indicates potential challenges in cold starting; consider battery capacity for reliable operation in lower temperatures.
| Description |
Continental MFA gasoline 4-cylinder liquid-cooled vertical L-head Larger engine, used from 1940 to 1943 |
| Displacement |
139.6ci / 2.3L |
| Bore/Stroke |
3.1875x4.375inches / 81x 111mm |
| Air cleaner |
oil bath |
| Rated RPM |
1800 |
| Starter volts |
6 |
ENGINE DETAIL 3
The Massey-Harris 101 Junior features a Continental 4-cylinder L-head engine, providing a robust displacement of 162 ci (2.7L), ideal for light to medium-duty agricultural tasks from the mid-20th century. With a bore and stroke of 3.4375x4.375 inches (87x111 mm), this setup offers a balance of torque and horsepower, beneficial for low-end power requirements. However, its age may present challenges in parts availability and modern efficiency standards, limiting its appeal compared to newer tractors.
| Description |
Continental gasoline 4-cylinder liquid-cooled vertical L-head Final engine, used from 1943 to 1946 |
| Displacement |
162ci / 2.7L |
| Bore/Stroke |
3.4375x4.375inches / 87x 111mm |
MASSEY-HARRIS 101 JUNIOR ENGINES
The Massey-Harris 101 Junior features an array of Continental gasoline engines (2.0L, 2.3L, and 2.7L), offering versatility in power selection for various agricultural tasks. With a fuel tank capacity of 10 gallons (37.9L), it balances operational endurance with weight efficiency, allowing for extended use without excessive refueling downtime. The primary considerations include engine output suitability for specific tasks and fuel consumption levels, which can impact operational costs and efficiency in the field.
| Description |
Continental 2.0L 4-cyl gasoline Continental 2.3L 4-cyl gasoline Continental 2.7L 4-cyl gasoline |
| Fuel tank |
10gal / 37.9L |
TRANSMISSION
The Massey-Harris 101 Junior features a simple gear transmission with 4 forward and 1 reverse gear, which provides basic speed control suitable for light agricultural tasks. This limited gear range offers advantages in ease of use and maintenance, making it ideal for novice operators or small-scale farming. However, the lack of additional gears may restrict versatility for more demanding applications or varied terrain.
| Type |
gear |
| Gears |
4 forward and 1 reverse |
MECHANICAL
The Massey-Harris 101 Junior features a basic 4x2 2WD chassis, making it suitable for light agricultural tasks and offering ease of maneuverability in open fields. Its manual steering can present challenges during prolonged use, potentially leading to operator fatigue, but it enhances steering feedback for precision handling. The 4-speed gear transmission provides limited speed options, ideal for tasks requiring controlled power delivery, but may limit versatility in varied field conditions compared to multi-speed or hydrostatic systems.
| Chassis |
4x2 2WD |
| Steering |
manual |
| Cab |
Open operator station |
| Transmission |
4-speed gear |
POWER TAKE-OFF (PTO)
MASSEY-HARRIS 101 JUNIOR TIRES
The Massey-Harris 101 Junior, equipped with 4.75-15 front tires and 10.00-36 rear tires, offers a balanced load distribution ideal for small-scale farming tasks. The larger rear tires enhance traction on uneven terrain, while the smaller front tires assist with maneuverability. However, the size disparity may lead to steering challenges in tight spaces, particularly in field row crop applications.
| Ag front |
4.75-15 |
| Ag rear |
10.00-36 |
DIMENSIONS
| Wheelbase |
83.5inches / 212cm (row-crop) 78inches / 198cm (standard) |
| Weight |
3400lbs / 1542kg |
| Rear tread |
52inches / 132cm (standard) |
DIMENSIONS & TIRES
The Massey-Harris 101 Junior tractor features a compact wheelbase of 83.5 inches for row-crop and 78 inches for standard configurations, providing stability and maneuverability in tight farming conditions. Weighing 3,400 lbs, its distribution enhances traction while the rear tires (10.00-36) facilitate optimal power transfer, crucial for heavy tillage tasks. However, the small front tire size (5.00-15) may affect overall balance during heavy loads or on uneven terrain, potentially limiting operational versatility.
| Wheelbase |
83.5inches / 212cm (row-crop) 78inches / 198cm (standard) |
| Weight |
3400lbs / 1542kg |
| Front tire |
5.00-15 |
| Rear tire |
10.00-36 |
101 JUNIOR SERIAL NUMBERS
| Location |
On frame, rear-left side near transmission case |
| 1939 |
377001 |
| 1940 |
377928 |
| 1941 |
379550 |
| 1942 |
379815 |
| 1943 |
379855 |
| 1944 |
380641 |
| 1945 |
382569 |
| 1946 |
384298 |
BELT PULLEY
| Diameter |
13inches / 33cm |
| Width |
6 inches /15 cm |
| RPM |
837 |
| Speed |
2958ft/min / 901.60meters/min |
