The New Holland TN85A tractor engine horsepower is 80 hp | 59.7 kW, PTO horsepower is 69 hp | 51.5 kW, and the drawbar horsepower is 61.2 hp | 45.6 kW.
Engine HP80 hp | 59.7 kW
PTO HP69 hp | 51.5 kW
Drawbar HP61.2 hp | 45.6 kW
PTO Transfer86.2%
Torque236 lb-ft | 320.0 Nm
Displacement274 ci | 4.5 L
New Holland TN85A Horsepower Specs
Engine gross horsepower
80 hp | 59.7 kW
PTO horsepower claimed
69 hp | 51.5 kW
PTO horsepower tested
72.0 hp | 53.7 kW
Drawbar horsepower tested
61.2 hp | 45.6 kW
New Holland TN85A Useful Horsepower Calculations
PTO-to-engine power transfer
86.2% of engine hp reaches the PTO
Drawbar-to-engine power transfer
76.5% of engine hp reaches the drawbar
Drawbar-to-PTO power ratio
88.7% drawbar hp vs PTO hp
Engine size per PTO horsepower
4 ci per PTO hp
PTO horsepower per liter
15.3 PTO hp per L
Engine size per engine horsepower
3.4 ci per engine hp
Engine horsepower per liter
17.8 engine hp per L
Torque per PTO horsepower
3.4 lb-ft per PTO hp
Rated speed per PTO horsepower
33.3 rpm per PTO hp
New Holland TN85A Engine Specs
Displacement
274 ci | 4.5 L
Bore and stroke
4.094×5.197 inches | 104 x 132 mm
Compression
17.5:1
Emissions
Tier 2
Rated RPM
2300
Torque
236 lb-ft | 320.0 Nm
Torque RPM
1400
New Holland TN85A Fuel, Cooling, Starting & Service Specs
Starter volts
12
Battery volts
12
New Holland TN85A Horsepower Comparison Charts
Engine horsepower comparison
This model
80 hp
Average
80 hp
Low
45 hp
High
120 hp
PTO horsepower comparison
This model
69 hp
Average
65 hp
Low
35 hp
High
105 hp
Drawbar horsepower comparison
This model
61.2 hp
Average
55 hp
Low
30 hp
High
95 hp
Displacement comparison
This model
274 ci
Average
260 ci
Low
150 ci
High
380 ci
Torque comparison
This model
236 lb-ft
Average
240 lb-ft
Low
120 lb-ft
High
420 lb-ft
Rated RPM comparison
This model
2,300 rpm
Average
2,200 rpm
Low
1,800 rpm
High
2,700 rpm
Engine size per PTO HP
This model
4 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.
New Holland TN85A Horsepower FAQ
How much horsepower does the New Holland TN85A have?
The listed engine output is 80 hp, close to the 80 hp benchmark average. That puts the tractor in a normal working range for this benchmark group, with 80 hp as the main engine number.
How much PTO horsepower does the New Holland TN85A have?
The listed PTO output is 69 hp, close to the 65 hp benchmark average. Use 69 PTO hp as the practical implement-sizing number.
How much drawbar horsepower does the New Holland TN85A have?
The listed drawbar output is 61.2 hp, close to the 55 hp benchmark average. It gives a realistic pulling-power figure of about 61.2 hp.
How much engine power reaches the PTO on the New Holland TN85A?
The PTO-to-engine transfer works out to 86.2%, from 80 engine hp to 69 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the New Holland TN85A for pulling work?
The drawbar-to-engine transfer is about 76.5%, from 80 engine hp to 61.2 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the New Holland TN85A better judged by PTO hp or drawbar hp?
The drawbar output is about 88.7% of PTO output, comparing 61.2 drawbar hp with 69 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the New Holland TN85A 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 New Holland TN85A engine stressed for its PTO horsepower?
The engine has about 4 cubic inches per PTO hp, using 274 ci and 69 PTO hp. That points to a larger-displacement, lower-stress style setup.
How much PTO horsepower per liter does the New Holland TN85A make?
The output density is about 15.3 PTO hp per liter, using 69 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.
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.
