The Massey Ferguson 231S tractor engine horsepower is 45 hp | 33.6 kW, and PTO horsepower is 42 hp | 31.3 kW.
Massey Ferguson 231S Horsepower Specs
| Engine horsepower | 45 hp | 33.6 kW |
|---|---|
| PTO horsepower claimed | 42 hp | 31.3 kW |
Massey Ferguson 231S Useful Horsepower Calculations
| PTO-to-engine power transfer | 93.3% of engine hp reaches the PTO |
|---|---|
| Engine size per PTO horsepower | 3.9 ci per PTO hp |
| PTO horsepower per liter | 15.6 PTO hp per L |
| Engine size per engine horsepower | 3.7 ci per engine hp |
| Engine horsepower per liter | 16.7 engine hp per L |
| Fuel tank per PTO horsepower | 0.3 gal per PTO hp |
| Rated speed per PTO horsepower | 53.6 rpm per PTO hp |
Massey Ferguson 231S Engine Specs
| Displacement | 165 ci | 2.7 L |
|---|---|
| Bore and stroke | 3.74×5.00 inches | 95 x 127 mm |
| Rated RPM | 2250 |
Massey Ferguson 231S Fuel, Cooling, Starting & Service Specs
| Fuel capacity | 12.7 gal | 48.1 L |
|---|---|
| Starter volts | 12 |
| Battery volts | 12 |
Massey Ferguson 231S Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Displacement comparison
Rated RPM comparison
Engine size per PTO HP
Benchmarks use practical low, average and high ranges for the utility tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
Massey Ferguson 231S Horsepower FAQ
How much horsepower does the Massey Ferguson 231S have?
The listed engine output is 45 hp, below the 80 hp benchmark average. That is a lower-power result, so the smarter match is lighter implements and jobs that do not demand more than about 45 hp.
How much PTO horsepower does the Massey Ferguson 231S have?
The listed PTO output is 42 hp, below the 65 hp benchmark average. For real use, size PTO implements below or near 42 hp rather than using a bigger engine-horsepower number.
How much engine power reaches the PTO on the Massey Ferguson 231S?
The PTO-to-engine transfer works out to 93.3%, from 45 engine hp to 42 PTO hp. That is a strong transfer figure when the two specs are from the same configuration.
How big is the Massey Ferguson 231S engine?
The engine displacement is 165 ci, below the 260 ci benchmark average. Smaller displacement usually means less engine size behind each horsepower number.
Is the Massey Ferguson 231S engine stressed for its PTO horsepower?
The engine has about 3.9 cubic inches per PTO hp, using 165 ci and 42 PTO hp. That points to a larger-displacement, lower-stress style setup.
How much PTO horsepower per liter does the Massey Ferguson 231S make?
The output density is about 15.6 PTO hp per liter, using 42 PTO hp and 2.7 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
What rpm is the Massey Ferguson 231S rated at?
The rated speed is 2,250 rpm, close to the 2,200 rpm benchmark average. The 2,250 rpm figure is around normal for this class.
Horsepower and engine specs can vary by year, market, engine option, fuel system, test standard and tractor configuration. Check the operator manual, spec plate, parts book and official masseyferguson.com website before buying parts, sizing implements or making repair decisions.
