| Manufacturer | International Harvester |
| Price | 4,400(USD) |
| Model | 650 |
| Equipment Type | Standard-Tread Tractors |
| Factory | Melrose Park, Illinois, USA |
NEBRASKA TRACTOR TEST 618 2
| Description | Gasoline 5-speed 2WD May 3 - 21, 1957 Link: Nebraska Tractor Test 618 file Drawbar performance Gear 3 used for power test. Gear 1 used for pull test |
| Belt power (max) | 62.11hp / 46.3kW |
| Belt fuel use (max) | 6.0gal/hour / 22.7l/hour |
| Max power | 56.17hp / 41.9kW |
| Max pull | 8,564lbs / 3884kg |
NEBRASKA TRACTOR TEST 621 2
| Description | LP gas 5-speed 2WD May 21 - 27, 1957 Link: Nebraska Tractor Test 621 file Drawbar performance Gear 3 used for power test. Gear 1 used for pull test |
| Belt power (max) | 63.91hp / 47.7kW |
| Belt fuel use (max) | 7.3gal/hour / 27.6l/hour |
| Max power | 58.22hp / 43.4kW |
| Max pull | 8,867lbs / 4022kg |
INTERNATIONAL HARVESTER 650 POWER
| Drawbar (claimed) | 45hp / 33.6kW |
| PTO (claimed) | 57hp / 42.5kW |
| Drawbar (tested) | 58.22hp / 43.4kW |
| Belt (tested) | 63.91hp / 47.7kW |
ENGINES OVERVIEW
The International Harvester 650 tractor is equipped with a versatile 5.7L 4-cylinder engine, available in gasoline, LP gas, and diesel variants, offering flexibility depending on fuel availability and application needs. The gasoline and LP versions provide quicker starts and cleaner burning, making them suitable for lighter agricultural tasks, while the diesel variant offers greater torque and fuel efficiency, ideal for heavy-duty work. Key considerations include the fuel type's impact on operability, maintenance requirements, and operational cost, contingent on the intended use.
| Description | International Harvester 5.7L 4-cyl gasoline International Harvester 5.7L 4-cyl LP gas International Harvester 4-cyl diesel |
ENGINE DETAIL 1
The International Harvester 650 features a robust 5.7L, 4-cylinder gasoline engine with a low compression ratio of 6.12:1, enabling durability during arduous tasks but limiting power output. With a displacement of 350ci and a bore/stroke ratio conducive to torque at lower RPMs (1500), this tractor is ideal for heavy pulling or tillage applications. The oil bath air cleaner enhances reliability in dust-laden environments; however, maintenance might present a challenge due to potential oil saturation.
| Description | International Harvester gasoline 4-cylinder liquid-cooled vertical I-head |
| Displacement | 350ci / 5.7L |
| Bore/Stroke | 4.50x5.50inches / 114x 140 mm |
| Air cleaner | oil bath |
| Compression | 6.12:1 |
| Rated RPM | 1500 |
| Starter volts | 12 |
ENGINE DETAIL 2
The International Harvester 650 features a robust 4-cylinder LP gas engine with a displacement of 350ci, offering a balanced torque delivery at a rated RPM of 1500, ideal for low-speed applications like plowing or tilling. The 8.25:1 compression ratio suggests efficiency in fuel consumption, making it suitable for extended field operations, although the reliance on LP gas may limit availability in certain regions. Additionally, the 12-volt starter system allows for reliable ignition, but users should consider the potential need for specialized maintenance compared to diesel counterparts.
| Description | International Harvester LP gas 4-cylinder liquid-cooled vertical I-head |
| Displacement | 350ci / 5.7L |
| Bore/Stroke | 4.50x5.50inches / 114x 140 mm |
| Compression | 8.25:1 |
| Rated RPM | 1500 |
| Starter volts | 12 |
ENGINE DETAIL 3
The International Harvester 650 tractor features a 4-cylinder liquid-cooled diesel engine, potentially derived from the Super WD-9 engine design, which suggests similar performance characteristics and durability. Pros include excellent fuel efficiency typical of diesel engines and robust torque output, ideal for heavy fieldwork. However, challenges may arise regarding part availability and age-related maintenance, necessitating careful assessment when sourcing components for repairs and upgrades.
| Description | International Harvester diesel 4-cylinder liquid-cooled Lacking information. Possibly the same as the Super WD-9 diesel engine |
INTERNATIONAL HARVESTER 650 ENGINES
The International Harvester 650 tractor offers a versatile range of powertrains, including a 5.7L gasoline engine, an LP gas variant, and a 4-cyl diesel option, enabling efficient performance across various applications. The gasoline model is advantageous for quick starts and ease of operation, while the diesel variant provides better fuel efficiency and torque for heavy-duty tasks, making it ideal for agricultural use. However, the LP gas option may pose challenges in fuel availability, depending on the region, which could limit operational flexibility.
| Description | International Harvester 5.7L 4-cyl gasoline International Harvester 5.7L 4-cyl LP gas International Harvester 4-cyl diesel |
TRANSMISSION
The International Harvester 650 tractor features a sliding gear transmission with 5 forward and 1 reverse gear, providing a straightforward gear selection. This simplicity facilitates ease of use for operators but may limit the range of speed and torque adjustments compared to more advanced transmissions. Ideal for light to moderate farming tasks, operators should note that the lack of a synchronized gearbox may require more skill during gear shifts, particularly under load.
| Type | sliding gear |
| Gears | 5 forward and 1 reverse |
MECHANICAL
The International Harvester 650 features a 4x2 2WD chassis, which offers simplicity and lower maintenance, but may limit traction on uneven terrain compared to 4WD models. Its power-assisted steering enhances maneuverability, making it easier to operate in tight spots, while the disc brake system provides reliable stopping power. The open operator station increases operator visibility and ease of access, though it may lack the comfort and protection of a fully enclosed cab, making it less ideal for adverse weather conditions.
| Chassis | 4x2 2WD |
| Steering | power assist |
| Brakes | disc |
| Cab | Open operator station. |
| Transmission | 5-speed sliding gear |
HYDRAULICS
| Type | Hydra-Touch |
| Valves | 1 |
POWER TAKE-OFF (PTO)
| Rear PTO | transmission |
| Rear RPM | 540 |
INTERNATIONAL HARVESTER 650 TIRES
The International Harvester 650 tractor features a front tire size of 7.50-18 and rear tires of 14-34, contributing to its excellent stability and traction on various terrains. The larger rear tires improve soil compaction management and provide enhanced pulling power, making it suitable for heavy-duty agricultural tasks. However, the specific tire sizes may limit its maneuverability in tighter spaces, so operators should consider field layout and crop spacing before deployment.
| Ag front | 7.50-18 |
| Ag rear | 14-34 |
DIMENSIONS
| Length | 135inches / 342cm |
| Width | 76inches / 193cm |
| Height | 88inches / 223cm |
INTERNATIONAL HARVESTER 650 WEIGHT
| Shipping | 6,712lbs / 3044kg |
| Operating | 7,319lbs / 3319kg |
| Ballasted | 12,615lbs / 5722kg |
DIMENSIONS & TIRES
The International Harvester 650 tractor, with a weight range of 6712 to 7319 pounds, offers stability and traction suitable for various agricultural applications. The front tires (7.50-18) provide adequate front-end lift, while the rear tires (14-34) enhance ground contact and pulling power, making it effective for heavy-duty tasks like plowing or tilling. However, its weight may present challenges in muddy or soft soil conditions, where lighter tractors might perform better.
| Weight | 6712 to 7319 pounds |
| Front tire | 7.50-18 |
| Rear tire | 14-34 |
650 SERIAL NUMBERS
| Location | Plate near fuel tank bracket |
| 1956 | 501 |
| 1957 | 688 |
| 1958 | 11659 |