J.I. Case S Tractor

Manufacturer	J.I. Case
Price	-
Model	S
Equipment Type	Standard-Tread Tractors
Factory	Racine, Wisconsin, USA

J.I. CASE S POWER

Drawbar (claimed)	16hp / 11.9kW
Belt (claimed)	21hp / 15.7kW
Plows	2 (14-inch)

ENGINES OVERVIEW

The J.I. Case S tractor features a choice between a 2.5L and 2.7L four-cylinder gasoline engine, offering a balance of power and efficiency suitable for small to medium farming operations. While the larger 2.7L variant may provide increased torque for heavier loads, the 2.5L option can enhance fuel efficiency and reduce operational costs. Operators should assess their specific workload requirements to determine which engine size best aligns with their needs for productivity and resource management.

Description

J.I. Case 2.5L 4-cyl gasoline J.I. Case 2.7L 4-cyl gasoline

ENGINE DETAIL 1

The J.I. Case S tractor features a robust 153.9ci (2.5L) 4-cylinder gasoline engine with an oil bath air cleaner, ensuring efficient filtration in dusty conditions. With a bore and stroke of 3.50x4.00 inches (89x102mm) and a rated RPM of 1550, it delivers reliable torque for agricultural tasks while maintaining lower operational stress. However, its limited RPM might restrict maximum power output during high-demand situations, making it more suited for general farming rather than intensive plowing or heavy towing.

Description	J.I. Case gasoline 4-cylinder liquid-cooled/Original engine, used until 1953.
Displacement	153.9ci / 2.5L
Bore/Stroke	3.50x4.00inches / 89x 102mm
Air cleaner	oil bath
Rated RPM	1550
Coolant capacity	16qts / 15.1L

ENGINE DETAIL 2

The J.I. Case S features a 2.7L gasoline engine with a 4-cylinder, liquid-cooled setup, offering a displacement of 165.1 cubic inches. Its bore and stroke dimensions (3.625 x 4.00 inches) enhance torque characteristics, making it suitable for pulling applications at its efficient rated RPM of 1550. The oil bath air cleaner contributes to engine longevity by reducing dust intake but may require more frequent servicing in dusty conditions.

Description	J.I. Case gasoline 4-cylinder liquid-cooled/The larger, 2.7L, engine was introduced in 1953 on the J.I. Case S
Displacement	165.1ci / 2.7L
Bore/Stroke	3.625x4.00inches / 92x 102mm
Air cleaner	oil bath
Rated RPM	1550

J.I. CASE S ENGINES

The J.I. Case S tractor features a 2.5L and 2.7L 4-cylinder gasoline engine, providing a balance of power and efficiency for various agricultural tasks. With a fuel tank capacity of 14 gallons (53.0L) and an auxiliary tank of 1.25 gallons (4.7L), it offers extended operational runtime, although fuel dependency may limit performance in remote locations. Consider scenarios that may require frequent refueling, as well as the potential for lower torque output compared to diesel engines in heavy-duty applications.

Description	J.I. Case 2.5L 4-cyl gasoline J.I. Case 2.7L 4-cyl gasoline
Fuel tank	14gal / 53.0L
Aux. fuel	1.25gal / 4.7L

TRANSMISSION

The J.I. Case S tractor features an unsynchronized gear transmission with 4 forward and 1 reverse gear, which can limit shifting efficiency and ease of use compared to synchronized systems. Its mechanical wet disc clutch offers better durability and smoother operation under heavy loads, but may require more maintenance than dry clutches. This combination makes it suitable for farms with simpler tasks and less frequent gear changes, where rugged performance is prioritized.

Type	unsynchronized gear
Gears	4 forward and 1 reverse
Clutch	mechanical wet disc

SPEEDS

Description

With 11-26 rear tires

MECHANICAL

The J.I. Case S tractor features a 4x2 2WD configuration, providing basic traction suitable for light to moderate agricultural tasks but may struggle in uneven terrain or wet conditions. The manual steering and unsynchronized 4-speed transmission allow for simple operation, though skill is required for smooth gear shifts. The open operator station with a steel pan seat and spring suspension provides basic comfort, making it ideal for short-duration tasks, however, exposure to elements can affect operator comfort during extended use.

Chassis	4x2 2WD
Steering	manual
Brakes	disc
Cab	Open operator station. Steel pan seat with spring suspension
Transmission	4-speed unsynchronized gear

TRACTOR HITCH

Type	Case Eagle Hitch

POWER TAKE-OFF (PTO)

Rear PTO	continuous/live*After 1953
Rear RPM	541

J.I. CASE S TIRES

The J.I. Case S tractor features a robust tire configuration with a narrow 25x4 steel front tire for enhanced maneuverability and stability. The wide 42x8 steel rear tires improve traction and weight distribution for optimal performance during heavy-duty agricultural tasks. The combination allows for excellent road handling but may pose challenges in terms of soil compaction when operating in softer ground conditions.

Ag front	25x4 (steel)
Ag rear	42x8 (steel)

DIMENSIONS

Wheelbase	66inches / 167cm
Length	108.5inches / 275cm
Width	56.25inches / 142cm
Height (hood)	51inches / 129cm
Weight	4376lbs / 1984kg
Clearance (front axle)	11.25inches / 28cm
Clearance (rear axle)	18.75inches / 47cm
Rear tread	47.5inches / 120cm

DIMENSIONS & TIRES

The J.I. Case S tractor features a compact wheelbase of 66 inches, enhancing maneuverability in tight spaces, which is ideal for small farms or landscaping tasks. Weighing 4376 lbs, it offers stability during operation but may require additional ballast for optimal traction on uneven terrain. The tire configuration—5.00-15 in the front and 11-26 in the rear—provides a balance of agility and power, although users should monitor tire wear based on load capacity and soil conditions.

Wheelbase	66inches / 167cm
Weight	4376lbs / 1984kg
Front tire	5.00-15
Rear tire	11-26

S SERIAL NUMBERS

Location	Serial number plate on tractor's instrument panel
1941	4500001
1942	4600001
1943	4700001
1944	4800001
1945	4900001
1946	5000001
1947	5100001
1948	5200001
1949	5300001
1950	5400001
1951	5500001

BELT PULLEY

Diameter	9.25inches / 23cm
Width	6.375inches / 16cm
RPM	1078
Speed	2600ft/min / 792.48meters/min

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