The Case IH 685XL tractor engine horsepower is 69 hp | 51.5 kW, and PTO horsepower is 64.2 hp | 47.9 kW.
Case IH 685XL Horsepower Specs
| Engine horsepower | 69 hp | 51.5 kW |
|---|---|
| PTO horsepower claimed | 64.2 hp | 47.9 kW |
Case IH 685XL Useful Horsepower Calculations
| PTO-to-engine power transfer | 93% of engine hp reaches the PTO |
|---|---|
| Engine size per PTO horsepower | 3.7 ci per PTO hp |
| PTO horsepower per liter | 16.5 PTO hp per L |
| Engine size per engine horsepower | 3.5 ci per engine hp |
| Engine horsepower per liter | 17.7 engine hp per L |
| Torque per PTO horsepower | 2.7 lb-ft per PTO hp |
| Rated speed per PTO horsepower | 35.8 rpm per PTO hp |
Case IH 685XL Engine Specs
| Displacement | 238.8 ci | 3.9 L |
|---|---|
| Bore and stroke | 3.875×5.06 inches | 98 x 129 mm |
| Compression | 15:1 |
| Rated RPM | 2300 |
| Torque | 175.5 lb-ft | 238.0 Nm |
| Torque RPM | 1600 |
Case IH 685XL Fuel, Cooling, Starting & Service Specs
| Starter volts | 12 |
|---|---|
| Battery volts | 12 |
Case IH 685XL Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Displacement comparison
Torque 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 685XL Horsepower FAQ
How much horsepower does the Case IH 685XL have?
The listed engine output is 69 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 69 hp.
How much PTO horsepower does the Case IH 685XL have?
The listed PTO output is 64.2 hp, close to the 65 hp benchmark average. Use 64.2 PTO hp as the practical implement-sizing number.
How much engine power reaches the PTO on the Case IH 685XL?
The PTO-to-engine transfer works out to 93%, from 69 engine hp to 64.2 PTO hp. That is a strong transfer figure when the two specs are from the same configuration.
How big is the Case IH 685XL engine?
The engine displacement is 238.8 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 685XL engine stressed for its PTO horsepower?
The engine has about 3.7 cubic inches per PTO hp, using 238.8 ci and 64.2 PTO hp. That is close to the normal benchmark for this category.
How much PTO horsepower per liter does the Case IH 685XL make?
The output density is about 16.5 PTO hp per liter, using 64.2 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.
How much torque does the Case IH 685XL have?
The listed torque is 175.5 lb-ft, below the 240 lb-ft benchmark average. With 175.5 lb-ft listed, gearing matters more when the tractor is loaded hard.
Does the Case IH 685XL have good torque for its PTO horsepower?
The torque-to-PTO-power figure is about 2.7 lb-ft per PTO hp, using 175.5 lb-ft and 64.2 PTO hp. A higher number usually points to a slower, gruntier working feel.
What rpm is the Case IH 685XL 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.
