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WM28 Diesel Engine
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The WM28 diesel is professionally marinized in Australia. Our engineering upgrade is heavy duty, and only proven components are chosen. Standard features include ZF Hurth gearboxes, Johnson water pumps, Polyflex engine mounts, Bosch electrical gear and VDO instrumentation. All WM Diesel engines feature large capacity heat exchangers made from 'admiralty bronze' with heavy walled copra nickel tube, which is hand soldered (with 45% silver solder) for extra long life. 

The WM28 is based on the Kubota D1105E and features the new E-TVCS, 3 vortex pre-combustion chamber design from Kubota. This offers improved efficiency with lower emissions.

All WM Diesels are covered by a full 12 months parts and labour warranty and the base Kubota engine has a 2 year world-wide warranty.

WM28 Performance Curve
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Control Panel with ignition switch, VDO tacho, and 3 warning lamps.

WM28 Diagrams
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Engine Model WM28  Note: 28HP or 20.9Kw

Engine Base Kubota D1105E Note: 4 stroke diesel

Number of Cylinders Three  Note: In Line

Bore x Stroke 78mm x 78.4mm Note: 3.07"x3.08"

Displacement 1,123 cc  Note: 68.5 cu.in.

Maximum Output 20.9Kw  Note: 28HP

Maximum RPM 3000 RPM Note: See performance data above

Injection Indirect type Note: E-TVCS combustion system

Cold starting aid 3 x Glow Plugs Note: Preheat system

Cooling system Heat exchanger Note: Hand made in copra nickel

Salt Water Pump Johnson Note: Quality pump 25mm

Exhaust Outlet 50mm Diameter Note: 2"

Engine Mounts Polyflex Note: Quality mountings


Alternator Bosch 50AMP 12V Note: Quality alternator

Gear Box Hurth HBW100  Note: Choose 2-1 or 3-1

Propellor Rotation Right Hand  Note: Clockwise from aft

Weight  140Kg/308pounds Note: Including gear box

Optional Extras: Polyflex flexible coupling, PTO pulley, shaft coupling, propeller, single lever controls, electric stop, compressor or bilge pump brackets, deluxe instrument panel. 

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WM Diesel, Unit 1/10 Polo Avenue, Mona Vale 2103, New South Wales, Australia. 
Phone +61 2 9979 5480 Fax +61 2 9979 8863 wmdiesel@tpg.com.au