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 codeV1505-E2B, V1505-E3B, V1505-E4B
LayoutStraight-4, vertical diesel engine
Fuel typeDiesel
Displacement1.5 L, 1,498 cm3 (91.4 cu in)
Fuel injection pumpBosch MD type mini fuel injection pump
Fuel nozzleMini nozzle (DNOPD)
Starting systemElectric starting with 12V starter
Starting support deviceGlow plug in combustion chamber
GovernorAll speed mechanical governor
Power adderNone
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 order1-3-4-2
Dimensions (L x W x H):591 x 396 x 614 mm (23.3 x 15.6 x 24.2 in)
Weight110.0 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:Second0.085-0.112 mm (0.0033-0.0044 in)
Oil0.020-0.055 mm (0.0008-0.0022 in)
Piston ring end gap:Top0.300-0.450 mm (0.0118-0.0177 in)
Second0.300-0.450 mm (0.0118-0.0177 in)
Oil0.250-0.400 mm (0.0098-0.0157 in)
Piston pin outer diameter22.002-22.011 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:INTAKE101.5 mm (3.99 in)
EXHAUST101.5 mm (3.99 in)
Valve stem diameter:INTAKE6.960-6.975 mm (0.274-0.2746 in)
EXHAUST6.960-6.975 mm (0.274-0.2746 in)
Valve spring free length:INTAKE37.0-37.5 mm (1.4567-1.4764 in)
EXHAUST37.0-37.5 mm (1.4567-1.4764 in)
Camshaft lobe height:INTAKE28.80 mm (1.1339 in)
EXHAUST29.00 mm (1.1417 in)
Camshaft journal diameter:35.934-35.950 mm (1.4147-1.4154 in)

Maintenance data

Valve clearance
Intake valve0.145-0.185 mm (0.0057-0.0073 in)
Exhaust valve0.145-0.185 mm (0.0057-0.0073 in)
Compression pressure
Standard3.73 to 4.11 MPa, 38.0 to 42.0 kgf/cm2, 541 to 597 psi
Oil system
Recommended engine oilCF or higher
SAE Viscosity NumberSAE 10W-30, 10W-40
Engine oil capacity6.7 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 capacity5.0 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
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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