The Case IH JX80U tractor engine horsepower is 74 hp | 55.2 kW, PTO horsepower is 66 hp | 49.2 kW, and the drawbar horsepower is 54.3 hp | 40.5 kW.
Case IH JX80U Horsepower Specs
| Engine gross horsepower | 74 hp | 55.2 kW |
|---|---|
| PTO horsepower claimed | 66 hp | 49.2 kW |
| PTO horsepower tested | 67.3 hp | 50.2 kW |
| Drawbar horsepower tested | 54.3 hp | 40.5 kW |
Case IH JX80U Useful Horsepower Calculations
| PTO-to-engine power transfer | 89.2% of engine hp reaches the PTO |
|---|---|
| Drawbar-to-engine power transfer | 73.4% of engine hp reaches the drawbar |
| Drawbar-to-PTO power ratio | 82.3% drawbar hp vs PTO hp |
| Engine size per PTO horsepower | 3.6 ci per PTO hp |
| PTO horsepower per liter | 16.9 PTO hp per L |
| Engine size per engine horsepower | 3.2 ci per engine hp |
| Engine horsepower per liter | 19 engine hp per L |
| Rated speed per PTO horsepower | 37.9 rpm per PTO hp |
Case IH JX80U Engine Specs
| Displacement | 238.5 ci | 3.9 L |
|---|---|
| Bore and stroke | 4.094×4.528 inches | 104 x 115 mm |
| Compression | 17.0:1 |
| Rated RPM | 2500 |
Case IH JX80U Fuel, Cooling, Starting & Service Specs
| Starter volts | 12 |
|---|---|
| Battery volts | 12 |
Case IH JX80U Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Drawbar 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 JX80U Horsepower FAQ
How much horsepower does the Case IH JX80U have?
The listed engine output is 74 hp, close to the 80 hp benchmark average. That puts the tractor in a normal working range for this benchmark group, with 74 hp as the main engine number.
How much PTO horsepower does the Case IH JX80U have?
The listed PTO output is 66 hp, close to the 65 hp benchmark average. Use 66 PTO hp as the practical implement-sizing number.
How much drawbar horsepower does the Case IH JX80U have?
The listed drawbar output is 54.3 hp, close to the 55 hp benchmark average. It gives a realistic pulling-power figure of about 54.3 hp.
How much engine power reaches the PTO on the Case IH JX80U?
The PTO-to-engine transfer works out to 89.2%, from 74 engine hp to 66 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the Case IH JX80U for pulling work?
The drawbar-to-engine transfer is about 73.4%, from 74 engine hp to 54.3 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the Case IH JX80U better judged by PTO hp or drawbar hp?
The drawbar output is about 82.3% of PTO output, comparing 54.3 drawbar hp with 66 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the Case IH JX80U engine?
The engine displacement is 238.5 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 JX80U engine stressed for its PTO horsepower?
The engine has about 3.6 cubic inches per PTO hp, using 238.5 ci and 66 PTO hp. That is close to the normal benchmark for this category.
How much PTO horsepower per liter does the Case IH JX80U make?
The output density is about 16.9 PTO hp per liter, using 66 PTO hp and 3.9 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
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.
