Kubota V1505

Kubota V1505The Kubota V1505 is a 1.5 L (1,498 cc, 91.4 cu-in) straight-four, water-cooled naturally aspirated diesel engine from Kubota 05-series.

The V1505 engine has a spherical type сombustion сhamber with glow plug, Bosch MD type mini fuel injection pump, and mini injection nozzle (DNOPD). The compression ratio rating is 24.0:1. The cylinder bore and the piston stroke are 78.0 mm (3.07 in) and 78.4 mm (3.09 in), respectively.

The Kubota V1505 diesel engine produces 34.0 PS (25.0 KW; 33.5 HP) at 3,000 rpm of net horsepower for V1505-E2B and V1505-E3B, or 24.1 PS (17.7 KW; 23.7 HP) at 2,300 rpm of net horsepower for V1505-E4B.

The breakdown of the engine code is as follows:

  • V – 4-cylinders
  • 15 – Approximate displacement 1,500 cc
  • 05 – 05-series

General information

Engine Specifications
Engine code V1505-E2B, V1505-E3B, V1505-E4B
Layout Straight-4, vertical diesel engine
Fuel type Diesel
Displacement 1.5 L, 1,498 cm3 (91.4 cu in)
Fuel injection pump Bosch MD type mini fuel injection pump
Fuel nozzle Mini nozzle (DNOPD)
Starting system Electric starting with 12V starter
Starting support device Glow plug in combustion chamber
Governor All speed mechanical governor
Power adder None
Max. Horsepower (net) V1505-E2B, V1505-E3B: 34.0 PS (25.0 KW; 33.5 HP) at 3,000 rpm
V1505-E4B: 24.1 PS (17.7 KW; 23.7 HP) at 2,300 rpm
Torque output
Firing order 1-3-4-2
Dimensions (L x W x H): 591 x 396 x 614 mm (23.3 x 15.6 x 24.2 in)
Weight 110.0 kg (242.5 lbs)

Cylinder block

Cylinder block
Compression ratio: 24.0:1
Cylinder bore: 78.0 mm (3.07 in)
Piston stroke: 78.4 mm (3.09 in)
Number of piston rings (compression / oil): 2 / 1
Cylinder inner diameter: 78.00-78.019 mm (3.0709-3.0716 in)
Piston skirt diameter
Piston ring side clearance: Second 0.085-0.112 mm (0.0033-0.0044 in)
Oil 0.020-0.055 mm (0.0008-0.0022 in)
Piston ring end gap: Top 0.300-0.450 mm (0.0118-0.0177 in)
Second 0.300-0.450 mm (0.0118-0.0177 in)
Oil 0.250-0.400 mm (0.0098-0.0157 in)
Piston pin outer diameter 22.002-22.011 mm (0.8662-0.8666 in)
Crankshaft main journal diameter: 1,2: 47.934-47.950 mm (1.8872-1.8878 in)
3: 51.921-51.940 mm (2.0442-2.0448 in)
Crankpin diameter: 39.959-39.975 mm (1.5732-1.5738 in)

Cylinder head

Cylinder head
Valve Arrangement: OHV, gear drive
Valves: 6 (2 valves per cylinder)
Valve head diameter: INTAKE
Valve length: INTAKE 101.5 mm (3.99 in)
EXHAUST 101.5 mm (3.99 in)
Valve stem diameter: INTAKE 6.960-6.975 mm (0.274-0.2746 in)
EXHAUST 6.960-6.975 mm (0.274-0.2746 in)
Valve spring free length: INTAKE 37.0-37.5 mm (1.4567-1.4764 in)
EXHAUST 37.0-37.5 mm (1.4567-1.4764 in)
Camshaft lobe height: INTAKE 28.80 mm (1.1339 in)
EXHAUST 29.00 mm (1.1417 in)
Camshaft journal diameter: 35.934-35.950 mm (1.4147-1.4154 in)

Maintenance data

Valve clearance
Intake valve 0.145-0.185 mm (0.0057-0.0073 in)
Exhaust valve 0.145-0.185 mm (0.0057-0.0073 in)
Compression pressure
Standard 3.73 to 4.11 MPa, 38.0 to 42.0 kgf/cm2, 541 to 597 psi
Oil system
Recommended engine oil CF or higher
SAE Viscosity Number SAE 10W-30, 10W-40
Engine oil capacity 6.7 liters (7.1 US.qts, 5.9 Imp. qts)
Fuel system
Fuel injection pump: Bosch MD type mini fuel injection pump
Injection nozzle: Mini Nozzle (DNOPD)
Firing order: 1-3-4-2
Injection pressure: 13.73 to 14.70 MPa; 140.0 to 150.0 kgf/cm2; 1992 to 2133 psi
Cooling system
Coolant capacity 5.0 liters (5.3 US.qts, 4.4 Imp. qts)
Electrical system
Battery: 12V, 75Ah or equivalent
Starting motor: 12 V, 1.2 kW
Charging alternator: V1505-B(E), -E2B: 12 V, 360 W
V1505-E3B, -E4B): 12 V, 480 W
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