The Case IH Farmall 105U tractor engine horsepower is 105 hp | 78.3 kW, and PTO horsepower is 90 hp | 67.1 kW.
Case IH Farmall 105U Horsepower Specs
| Engine gross horsepower | 105 hp | 78.3 kW |
|---|---|
| PTO horsepower claimed | 90 hp | 67.1 kW |
| PTO horsepower tested | 94.4 hp | 70.4 kW |
Case IH Farmall 105U Useful Horsepower Calculations
| PTO-to-engine power transfer | 85.7% of engine hp reaches the PTO |
|---|---|
| Engine size per PTO horsepower | 3 ci per PTO hp |
| PTO horsepower per liter | 20 PTO hp per L |
| Engine size per engine horsepower | 2.6 ci per engine hp |
| Engine horsepower per liter | 23.3 engine hp per L |
| Rated speed per PTO horsepower | 25.6 rpm per PTO hp |
Case IH Farmall 105U Engine Specs
| Engine model | year |
|---|---|
| Engine type | turbocharged intercooled diesel |
| Displacement | 274 ci | 4.5 L |
| Bore and stroke | 4.094×5.197 inches | 104 x 132 mm |
| Compression | 17:1 |
| Emissions | Tier 3 |
| Rated RPM | 2300 |
Case IH Farmall 105U Fuel, Cooling, Starting & Service Specs
| Starter volts | 12 |
|---|---|
| Battery volts | 12 |
Case IH Farmall 105U 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.
Case IH Farmall 105U Horsepower FAQ
How much horsepower does the Case IH Farmall 105U have?
The listed engine output is 105 hp, above the 80 hp benchmark average. That is a higher-power result, so ballast, tire setup and implement width matter if you want to use the full 105 hp.
How much PTO horsepower does the Case IH Farmall 105U have?
The listed PTO output is 90 hp, above the 65 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 90 hp.
How much engine power reaches the PTO on the Case IH Farmall 105U?
The PTO-to-engine transfer works out to 85.7%, from 105 engine hp to 90 PTO hp. That is a normal usable range for judging PTO implement fit.
How big is the Case IH Farmall 105U engine?
The engine displacement is 274 ci, close to the 260 ci benchmark average. It is close to the normal engine-size range for this horsepower class.
Is the Case IH Farmall 105U engine stressed for its PTO horsepower?
The engine has about 3 cubic inches per PTO hp, using 274 ci and 90 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the Case IH Farmall 105U make?
The output density is about 20 PTO hp per liter, using 90 PTO hp and 4.5 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 Case IH Farmall 105U rated at?
The rated speed is 2,300 rpm, close to the 2,200 rpm benchmark average. The 2,300 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 caseih.com website before buying parts, sizing implements or making repair decisions.
