The New Holland TG255 tractor engine horsepower is 255 hp | 190.2 kW, PTO horsepower is 215 hp | 160.3 kW, and the drawbar horsepower is 179.63 hp | 134.0 kW.
Engine HP255 hp | 190.2 kW
PTO HP215 hp | 160.3 kW
Drawbar HP179.63 hp | 134.0 kW
PTO Transfer84.3%
Displacement505 ci | 8.3 L
New Holland TG255 Horsepower Specs
Engine horsepower
255 hp | 190.2 kW
PTO horsepower claimed
215 hp | 160.3 kW
PTO horsepower tested
246.00 hp | 183.4 kW
Drawbar horsepower tested
179.63 hp | 134.0 kW
New Holland TG255 Useful Horsepower Calculations
PTO-to-engine power transfer
84.3% of engine hp reaches the PTO
Drawbar-to-engine power transfer
70.4% of engine hp reaches the drawbar
Drawbar-to-PTO power ratio
83.5% drawbar hp vs PTO hp
Engine size per PTO horsepower
2.3 ci per PTO hp
PTO horsepower per liter
25.9 PTO hp per L
Engine size per engine horsepower
2 ci per engine hp
Engine horsepower per liter
30.7 engine hp per L
Rated speed per PTO horsepower
10.2 rpm per PTO hp
New Holland TG255 Engine Specs
Engine type
turbocharged aftercooled diesel
Displacement
505 ci | 8.3 L
Bore and stroke
4.488×5.315 inches | 114 x 135 mm
Compression
17:1
Rated RPM
2200
New Holland TG255 Fuel, Cooling, Starting & Service Specs
Starter volts
12
Battery volts
12
Firing order
1-5-3-6-2-4
Idle RPM
850-2410
Intake valve clearance
Cold: 0.010 inches | 0.254 mm
Exhaust valve clearance
Cold: 0.020 inches | 0.508 mm
New Holland TG255 Horsepower Comparison Charts
Engine horsepower comparison
This model
255 hp
Average
210 hp
Low
120 hp
High
380 hp
PTO horsepower comparison
This model
215 hp
Average
175 hp
Low
100 hp
High
320 hp
Drawbar horsepower comparison
This model
179.6 hp
Average
150 hp
Low
85 hp
High
280 hp
Displacement comparison
This model
505 ci
Average
520 ci
Low
360 ci
High
750 ci
Rated RPM comparison
This model
2,200 rpm
Average
2,100 rpm
Low
1,600 rpm
High
2,500 rpm
Engine size per PTO HP
This model
2.3 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.
New Holland TG255 Horsepower FAQ
How much horsepower does the New Holland TG255 have?
The listed engine output is 255 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 255 hp.
How much PTO horsepower does the New Holland TG255 have?
The listed PTO output is 215 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 215 hp.
How much drawbar horsepower does the New Holland TG255 have?
The listed drawbar output is 179.6 hp, above the 150 hp benchmark average. That makes the 179.6 hp drawbar number more useful than engine hp for tillage and heavy pulling.
How much engine power reaches the PTO on the New Holland TG255?
The PTO-to-engine transfer works out to 84.3%, from 255 engine hp to 215 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the New Holland TG255 for pulling work?
The drawbar-to-engine transfer is about 70.4%, from 255 engine hp to 179.6 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the New Holland TG255 better judged by PTO hp or drawbar hp?
The drawbar output is about 83.5% of PTO output, comparing 179.6 drawbar hp with 215 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the New Holland TG255 engine?
The engine displacement is 505 ci, close to the 520 ci benchmark average. It is close to the normal engine-size range for this horsepower class.
Is the New Holland TG255 engine stressed for its PTO horsepower?
The engine has about 2.4 cubic inches per PTO hp, using 505 ci and 215 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the New Holland TG255 make?
The output density is about 25.9 PTO hp per liter, using 215 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 newholland.com website before buying parts, sizing implements or making repair decisions.
