Zenith / Isuzu Marine Propulsion Unit – 123hp
Isuzu diesel engines marinised by Zenith Engineering for marine propulsion or on board power pack applications, engine range from 48hp to 163hp.
The Engine
Isuzu Model 4BG1-TRW
Aspiration Turbocharged
Cylinders Four
Bore x Stroke (mm) 105 x 125
Displacement (cc) 4329
Alternator – 12 volt 94 amp (approx)
OD – Exhaust elbow outlet 3”
OD – Raw water inlet 1.25”
OD – Fuel Inlet 10mm
OD – Fuel Return 10mm
Maximum Engine Output – kW (HP) 91.7 (123) @ 2500rpm
Maximum Torque 387 Nm @ 2000rpm
Engine Rotation Counterclockwise, viewed from flywheel
Approx.Fuel Consumption @ 1500rpm: 75% Load 11.9 litres/hour
(note that fuel consumption will vary substantially with load and rpm)
The Transmission
ZF Model ZF45A
Single speed , 8 degree down angle, direct mount
Maximum rated input 155kW (208hp) at 3300rpm. Pleasure duty.
Reverse reduction integral marine transmission, with hydraulically actuated multi disc clutches.
Available Ratios 1.256, 1.514, 2.034, 2.435
The Options
• Plug-in extension wiring harness (from 1 meter)
• Engine Mounts
• Coupling for output flange
• Full instrument panel
• 24 volt electrics
• Control cable mounting brackets for engine/transmission
*Image shown may not reflect actual engine configuration
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Zenith Engineering
Zenith Engineering provides general engineering services to local and interstate customers. In our workshop we have access to CNC machinery and manual lathes. With our highly experienced engineering team and ...
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