| Manufacturer | Nuffield |
| Price | 5(USD) |
| Model | 4/65 |
| Equipment Type | - |
| Factory | Bathgate, Scotland |
NUFFIELD 4/65 POWER
| Engine | 65 hp/48.5 kW |
| PTO (claimed) | 54 hp/40.3 kW |
ENGINE DETAIL
The Nuffield 4/65 tractor features a robust BMC diesel engine with a 3.8 L displacement and a compression ratio of 16.5:1, providing impressive torque of 170 lb-ft at 1200 RPM, ideal for heavy-duty tasks. Its compact design, with a bore and stroke of 3.937 x 4.724 inches, ensures efficient power delivery at a rated RPM of 2500, which is suitable for various agricultural applications. However, the 12-volt starter system and relatively high idle RPM range may present challenges in maintaining optimal performance in low-speed settings, necessitating careful tuning during operation.
| Description | BMC/diesel/4-cylinder 8-valve/liquid-cooled OHV |
| Displacement | 231 ci/3.8 L |
| Bore/Stroke | 3.937x4.724 inches/100 x 120 mm |
| Power | 65 hp/48.5 kW |
| Compression | 16.5:1 |
| Rated RPM | 2500 |
| Idle RPM | 630-2160 |
| Torque | 170 lb-ft/230.5 Nm |
| Torque RPM | 1200 |
| Firing order | 1-3-4-2 |
| Starter volts | 12 |
| Oil capacity | 9.5 qts/9.0 L |
| Coolant capacity | 14.4 qts/13.6 L |
NUFFIELD 4/65 ENGINE
The Nuffield 4/65 features a robust BMC 3.8L four-cylinder diesel engine, delivering efficient power for medium-duty agricultural tasks. Its 19.2-gallon (72.7 L) fuel tank ensures extended operation between refuels, making it advantageous for long days in the field. However, users should be aware of the engine's weight and size, which may affect maneuverability in tighter spaces.
| Description | BMC 3.8L 4-cyl diesel |
| Fuel tank | 19.2 gal/72.7 L |
TRANSMISSION
The Nuffield 4/65 tractor features a unique 10 forward and 2 reverse gear configuration, allowing for enhanced versatility across various terrains and tasks. Its 280mm dry disc clutch provides reliable engagement suitable for demanding applications, though maintenance may be required more frequently compared to wet clutches. With an oil capacity of 59.7 quarts, ensure regular checks to maintain optimal performance and prevent overheating, particularly in extensive use scenarios.
| Type | gear |
| Gears | 10 forward and 2 reverse |
| Clutch | 280mm dry disc |
| Oil capacity | 59.7 qts/56.5 L |
| Description | Five gears, plus reverse, in two ranges. |
SPEEDS
| Description | With 11-36 rear tires./ |
MECHANICAL
The Nuffield 4/65 features a 4x2 2WD chassis, which enhances maneuverability but may limit traction in challenging terrains compared to 4WD models. Its 10-speed gear transmission allows for versatile speed adjustments, particularly beneficial for varying field conditions, while the mechanical disc brakes offer reliable stopping power but may require more maintenance over time compared to hydraulic systems. The open operator station provides good visibility and comfort but exposes the operator to weather elements, which could be a disadvantage for prolonged use.
| Chassis | 4x2 2WD |
| Final drives | spur gear |
| Steering | power |
| Brakes | mechanical disc |
| Cab | Open operator station. |
| Transmission | 10-speed gear |
TRACTOR HITCH
| Rear Type | II/I |
| Control | directional control and top-link draft sensing |
POWER TAKE-OFF (PTO)
| Rear PTO | transmission/independent |
| Rear RPM | 540 (1.375) |
| Engine RPM | 540@1800 |
NUFFIELD 4/65 TIRES
The Nuffield 4/65 features a robust tire configuration with 7.50-16 front tires, enhancing maneuverability and steering precision in tight spaces. The rear tire options of 12.00-38, 14.00-30, and 15.00-30 provide versatility for varied agricultural tasks, allowing for optimal traction and stability depending on soil conditions. While the tractor's design may present challenges in terms of parts availability and older technology, its simplicity can be advantageous for easy maintenance and repairs on the farm.
| Ag front | 7.50-16 |
| Ag rear | 12.00-38/14.00-30/15.00-30 |
DIMENSIONS
| Wheelbase | 79.9 inches/202 cm |
| Length | 126.4 inches/321 cm |
| Width | 67.7 inches/171 cm |
| Height (hood) | 60.6 inches/153 cm |
| Height (exhaust) | 86.6 inches/219 cm |
| Operating weight | 5140 lbs/2331 kg |
| Ground clearance | 23.1 inches/58 cm |
| Clearance (front axle) | 17.2 inches/43 cm |
| Clearance (drawbar) | 15.3 inches/38 cm |
| Front tread | 52 to 76 inches/132 to 193 cm |
| Rear tread | 54 to 88 inches/137 to 223 cm |
DIMENSIONS & TIRES
The Nuffield 4/65 tractor features a wheelbase of 79.9 inches, promoting stability and maneuverability, particularly in tight field conditions. Weighing 5140 lbs, it offers a solid platform for plowing, though additional weight may be beneficial for traction on softer soils. The front tire size of 6.00-16 and rear tire size of 11.00-36 implies a balanced load distribution, optimizing performance in both agricultural and landscaping tasks, though tire maintenance is crucial to prevent slippage.
| Wheelbase | 79.9 inches/202 cm |
| Weight | 5140 lbs/2331 kg |
| Front tire | 6.00-16 |
| Rear tire | 11.00-36 |
4/65 SERIAL NUMBERS
| Location | Serial number plate on the left side of the tractor frame. |
| 1967 | 99001 |
| Final | 135000 |