The Case IH MX285 Magnum tractor engine horsepower is 287 hp | 214.0 kW, PTO horsepower is 240 hp | 179.0 kW, and the drawbar horsepower is 203.74 hp | 151.9 kW.
Engine HP287 hp | 214.0 kW
PTO HP240 hp | 179.0 kW
Drawbar HP203.74 hp | 151.9 kW
PTO Transfer83.6%
Torque1853 lb-ft | 2512.7 Nm
Displacement504.5 ci | 8.3 L
Case IH MX285 Magnum Horsepower Specs
Engine horsepower
287 hp | 214.0 kW
PTO horsepower claimed
240 hp | 179.0 kW
PTO horsepower tested
276.12 hp | 205.9 kW
Drawbar horsepower tested
203.74 hp | 151.9 kW
Case IH MX285 Magnum Useful Horsepower Calculations
PTO-to-engine power transfer
83.6% of engine hp reaches the PTO
Drawbar-to-engine power transfer
71% of engine hp reaches the drawbar
Drawbar-to-PTO power ratio
84.9% drawbar hp vs PTO hp
Engine size per PTO horsepower
2.1 ci per PTO hp
PTO horsepower per liter
28.9 PTO hp per L
Engine size per engine horsepower
1.8 ci per engine hp
Engine horsepower per liter
34.6 engine hp per L
Torque per PTO horsepower
7.7 lb-ft per PTO hp
Fuel tank per PTO horsepower
0.7 gal per PTO hp
Case IH MX285 Magnum Engine Specs
Engine type
turbocharged diesel
Displacement
504.5 ci | 8.3 L
Bore and stroke
4.488×5.315 inches | 114 x 135 mm
Compression
17.0:1
Rated RPM
2000
Torque
1853 lb-ft | 2512.7 Nm
Torque RPM
1400
Case IH MX285 Magnum Fuel, Cooling, Starting & Service Specs
Fuel capacity
160 gal | 605.6 L
Starter volts
12
Battery volts
12
Case IH MX285 Magnum Horsepower Comparison Charts
Engine horsepower comparison
This model
287 hp
Average
210 hp
Low
120 hp
High
380 hp
PTO horsepower comparison
This model
240 hp
Average
175 hp
Low
100 hp
High
320 hp
Drawbar horsepower comparison
This model
203.7 hp
Average
150 hp
Low
85 hp
High
280 hp
Displacement comparison
This model
504.5 ci
Average
520 ci
Low
360 ci
High
750 ci
Torque comparison
This model
1,853 lb-ft
Average
700 lb-ft
Low
350 lb-ft
High
1,250 lb-ft
Rated RPM comparison
This model
2,000 rpm
Average
2,100 rpm
Low
1,600 rpm
High
2,500 rpm
Engine size per PTO HP
This model
2.1 ci/hp
Average
3.3 ci/hp
Low
2 ci/hp
High
5.2 ci/hp
Benchmarks use practical low, average and high ranges for the large ag tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
Case IH MX285 Magnum Horsepower FAQ
How much horsepower does the Case IH MX285 Magnum have?
The listed engine output is 287 hp, above the 210 hp benchmark average. That is a higher-power result, so ballast, tire setup and implement width matter if you want to use the full 287 hp.
How much PTO horsepower does the Case IH MX285 Magnum have?
The listed PTO output is 240 hp, above the 175 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 240 hp.
How much drawbar horsepower does the Case IH MX285 Magnum have?
The listed drawbar output is 203.7 hp, above the 150 hp benchmark average. That makes the 203.7 hp drawbar number more useful than engine hp for tillage and heavy pulling.
How much engine power reaches the PTO on the Case IH MX285 Magnum?
The PTO-to-engine transfer works out to 83.6%, from 287 engine hp to 240 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the Case IH MX285 Magnum for pulling work?
The drawbar-to-engine transfer is about 71%, from 287 engine hp to 203.7 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the Case IH MX285 Magnum better judged by PTO hp or drawbar hp?
The drawbar output is about 84.9% of PTO output, comparing 203.7 drawbar hp with 240 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the Case IH MX285 Magnum engine?
The engine displacement is 504.5 ci, close to the 520 ci benchmark average. It is close to the normal engine-size range for this horsepower class.
Is the Case IH MX285 Magnum engine stressed for its PTO horsepower?
The engine has about 2.1 cubic inches per PTO hp, using 504.5 ci and 240 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the Case IH MX285 Magnum make?
The output density is about 28.9 PTO hp per liter, using 240 PTO hp and 8.3 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
Official information note
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.
