This from the Deere dealer who will let me drive the 5055E this week, and I'll drive the Workmaster as well:
Engine:
Rated engine speed rpm
NH 2700
JD 2400 JD engine runs at a lower rpm to reach hp output ( less wear on internal engine parts, engine does not have to turn as fast.)
Fuel Tank cap:
NH 13.5 gal
JD 18 gal ( longer run time before fuel stop)
PTO horsepower:
NH 47.5 hp (Advantage, but tractor is much lighter, so takes less hp from the engine to move the tractor, leaving a little more pto hp)
JD 45 HP
Displacement:
NH 135 cu in 4 cyl
JD 179 cu in 3 cyl ( larger pistons and cylinder more torque power.)
Block Design:
NH- Parent Bore, cylinder is bored directly in cast iron block. (less costly to manf. limited to how many times engine cyl can be re ringed and bored. ( not that you would be putting that many hours on a tractor to have it re bored. maybe your grandchildren would have to deal with that, LOL.
Wet Sleeved- Cast iron sleeves that the coolant runs directly in contact with cylinder sleeves. also can rebuild the cylinders multiple times.
Fuel injection system:
NH- indirect ( fuel and air are mixed before entering the cylinder) Not as fuel efficient
JD – Direct ( Fuel and air are mixed at the top of the cylinder. Better combustion and fuel economy)
Max speed
NH- 20mph
JD- 18.7 mph
Weight:
NH- 4078 lbs
JD- 5070 lbs Wow, 1000 lbs difference, the more weight, better traction and stability on hills.
Wheelbase:
NH- 77.2
JD- 80.7 the longer base rear axle to front axle, the longer the more stable on hills.
Looks like the JD has more weight and frame and power with the larger displacement engine. The hydraulic specs are very much the same. The JD will have better traction and stabilty on the hills. Also the 5055E’s we have have 16.9 x 28 rear tires that are 2 “ wider than the 14.9 std. = better traction/stabilty.