The Case IH Maxxum 145 tractor engine horsepower is 145 hp | 108.1 kW, and PTO horsepower is 120 hp | 89.5 kW.
Engine HP145 hp | 108.1 kW
PTO HP120 hp | 89.5 kW
PTO Transfer82.8%
Displacement274 ci | 4.5 L
Case IH Maxxum 145 Horsepower Specs
Engine gross horsepower
145 hp | 108.1 kW
PTO horsepower claimed
120 hp | 89.5 kW
Case IH Maxxum 145 Useful Horsepower Calculations
PTO-to-engine power transfer
82.8% of engine hp reaches the PTO
Engine size per PTO horsepower
2.3 ci per PTO hp
PTO horsepower per liter
26.7 PTO hp per L
Engine size per engine horsepower
1.9 ci per engine hp
Engine horsepower per liter
32.2 engine hp per L
Fuel tank per PTO horsepower
0.4 gal per PTO hp
Rated speed per PTO horsepower
18.3 rpm per PTO hp
Case IH Maxxum 145 Engine Specs
Engine type
turbocharged air-to-air intercooled diesel
Displacement
274 ci | 4.5 L
Bore and stroke
4.095×5.20 inches | 104 x 132 mm
Emissions
Tier 4
Rated RPM
2200
Case IH Maxxum 145 Fuel, Cooling, Starting & Service Specs
Fuel capacity
51.5 gal | 194.9 L
Starter volts
12
Battery volts
12
Case IH Maxxum 145 Horsepower Comparison Charts
Engine horsepower comparison
This model
145 hp
Average
80 hp
Low
45 hp
High
120 hp
PTO horsepower comparison
This model
120 hp
Average
65 hp
Low
35 hp
High
105 hp
Displacement comparison
This model
274 ci
Average
260 ci
Low
150 ci
High
380 ci
Rated RPM comparison
This model
2,200 rpm
Average
2,200 rpm
Low
1,800 rpm
High
2,700 rpm
Engine size per PTO HP
This model
2.3 ci/hp
Average
3.5 ci/hp
Low
2.2 ci/hp
High
5.8 ci/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 Maxxum 145 Horsepower FAQ
How much horsepower does the Case IH Maxxum 145 have?
The listed engine output is 145 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 145 hp.
How much PTO horsepower does the Case IH Maxxum 145 have?
The listed PTO output is 120 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 120 hp.
How much engine power reaches the PTO on the Case IH Maxxum 145?
The PTO-to-engine transfer works out to 82.8%, from 145 engine hp to 120 PTO hp. That is a normal usable range for judging PTO implement fit.
How big is the Case IH Maxxum 145 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 Maxxum 145 engine stressed for its PTO horsepower?
The engine has about 2.3 cubic inches per PTO hp, using 274 ci and 120 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the Case IH Maxxum 145 make?
The output density is about 26.7 PTO hp per liter, using 120 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 Maxxum 145 rated at?
The rated speed is 2,200 rpm, close to the 2,200 rpm benchmark average. The 2,200 rpm figure is around normal for this class.
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.
