Standard Tread tractorsSpec sheet
Hart-Parr 40-80
The Hart-Parr 40-80 is a powerful 2WD tractor built for heavy-duty farm work. It features a large 4-cylinder engine that runs on kerosene and is cooled by liquid. This engine is naturally aspirated, meaning it doesn't use a turbocharger. With a displacement of 3309.4 cubic inches and a power output of 110 horsepower, this tractor packs a lot of punch for its time. One of the most striking features of the Hart-Parr 40-80 is its size and weight. Weighing in at 34,000 pounds, it's a very heavy machine. It rides on steel wheels instead of rubber tires, which was common for tractors of its era. The rear wheels are especially large, with a diameter of 98 inches. This tractor uses manual steering and has a Category 3 hitch, making it suitable for use with large implements. Despite its age, the Hart-Parr 40-80 remains an impressive piece of farm machinery, showcasing the engineering prowess of its time.
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Key specifications
- Category
- Standard Tread
- Engine power
- 110hp
- Operating weight
- 34,000 lb
Category comparison
40-80 compared with its category
vs. Standard Tread medianDistribution
Engine Power (hp)
All recorded Standard Tread tractors
110 hp · 93rd
This model
12
Median 45 hp
102
This modelStandard Tread tractorsMediann = 121
The 40-80 ranks at the 93rd percentile for engine power among recorded standard tread tractors.
Overview
About the Hart-Parr 40-80
The Hart-Parr 40-80 is a powerful 2WD tractor built for heavy-duty farm work. It features a large 4-cylinder engine that runs on kerosene and is cooled by liquid. This engine is naturally aspirated, meaning it doesn't use a turbocharger. With a displacement of 3309.4 cubic inches and a power output of 110 horsepower, this tractor packs a lot of punch for its time. One of the most striking features of the Hart-Parr 40-80 is its size and weight. Weighing in at 34,000 pounds, it's a very heavy machine. It rides on steel wheels instead of rubber tires, which was common for tractors of its era. The rear wheels are especially large, with a diameter of 98 inches. This tractor uses manual steering and has a Category 3 hitch, making it suitable for use with large implements. Despite its age, the Hart-Parr 40-80 remains an impressive piece of farm machinery, showcasing the engineering prowess of its time.
Full specifications
Recorded specifications
General
| Manufacturer | Hart-Parr |
|---|---|
| Model | 40-80 |
| Category | Standard Tread tractor |
| Type | 2WD |
| Operating weight | 34,000lb(15,420 kg) |
Engine
| Make | Hart-Parr |
|---|---|
| Power | 110hp(82.03 kW) |
| Cylinders | 4 |
| Displacement | 3,309.4ci(54.23 L) |
| Bore | 9in(228.6 mm) |
| Stroke | 13in(330.2 mm) |
Chassis & drive
| Chassis | 2WD |
|---|---|
| Drive | 2WD |
| Steering | Manual |
Dimensions
| Operating weight | 34,000lb(15,420 kg) |
|---|
Closest alternatives
40-80 compared with the nearest models by horsepower
The closest standard tread models to the Hart-Parr 40-80 by rated horsepower are the Massey Ferguson 97 and the International Harvester 1256. The Massey Ferguson 97 makes 2 hp more and weighs 25,850 lb less, so it is lighter for its power, which favors PTO and transport work over heavy draft. The International Harvester 1256 is rated 3 hp higher and weighs 23,600 lb less, carrying 92 lb per horsepower against 309 lb. Of the 3 models, the 40-80 has the highest weight per horsepower at 309 lb per hp.
| Spec | Hart-Parr 40-80 | Massey Ferguson 97 | International Harvester 1256 |
|---|---|---|---|
| Engine power | 110 hp82 kW | 112 hp83.5 kW | 113 hp84.3 kW |
| Operating weight | 34,000 lb15,422 kg | 8,155 lb3,699 kg | 10,405 lb4,720 kg |
| Weight per hp | 309 lb/hp188 kg/kW | 73 lb/hp44 kg/kW | 92 lb/hp56 kg/kW |
| Displacement | 3,309.4 ci54.23 L | 504 ci8.26 L | 407 ci6.67 L |
| Cylinders | 4 | 6 | 6 |
| Transmission | - | Gear | Gear, Partial Power Shift |
| Drive | 2WD | 2WD | 2WD |
Calculators
Calculators for the 40-80
PTO power
About 91 to 99 PTO hp
Estimated from the 110 hp engine rating. The calculator also estimates drawbar power by surface.
Implement sizing
Implements a 110 hp tractor can run
Maximum size is about a 13 ft rotary cutter or a 11 ft tiller. The calculator also sizes discs, plows and balers.
Ballast
359 lb per PTO hp as listed
The calculator gives the target weight and front/rear split for each job.
Units
110 hp is 82.0 kW
The converter gives kW and metric PS values, as used on European spec sheets.
Category medians
40-80 vs. Standard Tread median
Hart-Parr 40-80 compared with other Standard Tread tractors
| Spec | This model | Standard Tread median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 110 hp | 45 hp | +144% | 93rd |
| Engine Displacement | 3,309 ci | 382 ci | +767% | 99th |
| Cylinders | 4 | 4 | at median | 50th |
| Operating Weight | 34,000 lb | 6,834 lb | +398% | 99th |
Medians and percentiles are calculated from the standard tread tractors in the database that have a recorded value for each specification (sample size 121–367 models).
Same manufacturer
Other Hart-Parr models
Other manufacturers
Models with similar horsepower
FAQ
Frequently asked questions
What is the engine power output of the Hart-Parr 40-80?
Rated engine output for the Hart-Parr 40-80 is 110 hp, delivered by a 4-cylinder engine. The engine displaces 3,309.4 ci.
What hitch category is the Hart-Parr 40-80?
The Hart-Parr 40-80 uses a Category Category 3 hitch.
What is the operating weight of the Hart-Parr 40-80?
The Hart-Parr 40-80 has an operating weight of about 34,000 lb.
How do I maintain a Hart-Parr 40-80?
Routine service for the Hart-Parr 40-80 covers engine oil and filter changes, hydraulic and coolant level checks, air filter cleaning, and scheduled inspections. Refer to the manufacturer's maintenance schedule for exact intervals.