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Hart-ParrModel A
Hart-Parr 40
Utility
- power
- 40.7 hp
- displacement
- 618 ci
- Cylinders
- 4
- Forward gears
- 2
Head to head · Utility
Hart-Parr 40 vs Nuffield PM-4 Universal
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NuffieldModel B
Nuffield PM-4 Universal
Utility
- power
- 40.8 hp
- displacement
- 230 ci
- Cylinders
- 4
- Forward gears
- 5
Hart-ParrHart-Parr 40
vs
NuffieldNuffield PM-4 Universal
How they compare
Headline specs vs. the whole Utility
Engine Power
▲ PM-4 Universal higher · +0.1 hp (<1%)4040.7 hp
PM-4 Universal40.8 hp
Median Utility Tractor55 hp
40 is in the 35th percentile; PM-4 Universal is in the 35th · 5,383 models
Engine Displacement
▲ 40 higher · +388 ci (+169%)40618 ci
PM-4 Universal230 ci
Median Utility Tractor183 ci
40 is in the 95th percentile; PM-4 Universal is in the 62nd · 5,580 models
Cylinders
= Effectively tied404
PM-4 Universal4
Median Utility Tractor4
40 is in the 50th percentile; PM-4 Universal is in the 50th · 5,720 models
Forward Gears
▲ PM-4 Universal higher · +3 (+150%)402
PM-4 Universal5
Median Utility Tractor12
40 is in the 1st percentile; PM-4 Universal is in the 6th · 4,941 models
40 (A)PM-4 Universal (B)Median Utility Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| Manufacturer | Hart-Parr | Nuffield | — |
| Model | 40 | PM-4 Universal | — |
| Category | Utility, Standard Tread | Utility | — |
Engine
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| Manufacturer | Hart-Parr | Morris Motors | — |
| Power Output | 40.7hp | 40.8hp | ▲ PM-4 Universal+0.1 hp · <1% |
| Rated RPM | 802RPM | 2,000RPM | ▲ PM-4 Universal+1,198 RPM · +149% |
| Cylinders | 4 | 4 | Same |
| Displacement | 618ci | 230ci | ▲ 40+388 ci · +169% |
| Bore | 5.5in | 3.9in | ▲ 40+1.6 in · +41% |
| Stroke | 6.5in | 4.7in | ▲ 40+1.8 in · +38% |
Transmission
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| Type | Gear | Gear | Same |
Dimensions & Weight
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| Length | 140in | 122in | ▲ 40+18 in · +15% |
| Width | 96in | Not recorded | — |
| Height | 67in | 80.7in | ▲ PM-4 Universal+13.7 in · +20% |
| Operating Weight | 6,300lb | 5,307lb | ▲ 40+993 lb · +19% |
Hydraulics
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| System Type | Not recorded | Open Center | — |
| Steering Type | Manual | Manual | Same |
Tires
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| Front Tire Size | Not recorded | 6.00-16 | — |
| Rear Tire Size | Not recorded | 11.00-36 | — |
Chassis & Drive
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| Chassis Type | 4x2 | 4x2 | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Manual | Manual | Same |
Electrical
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| Starter Type | Not recorded | Electric | — |
Capacities
| Spec | Hart-Parr 40 | Nuffield PM-4 Universal | Difference |
|---|---|---|---|
| Coolant | 28.8gal | 4.5gal | ▲ 40+24.3 gal · +540% |
Category context
Both models against the field
Engine Power
median 55 hpA · 35th percentile (40.7 hp)B · 35th percentile (40.8 hp)
Engine Displacement
median 183 ciA · 95th percentile (618 ci)B · 62nd percentile (230 ci)
Cylinders
median 4A · 50th percentile (4)B · 50th percentile (4)
Forward Gears
median 12A · 1st percentile (2)B · 6th percentile (5)
Operating Weight
median 5,303 lbA · 60th percentile (6,300 lb)B · 50th percentile (5,307 lb)
A · 40B · PM-4 UniversalMedian Utility Tractor