FNM 20HPE-180 Inboard Shaft Marine Diesel Engine Package

Description

Generating 180 BHP at 4,000 RPM from a 2.0L block, the FNM 20HPE-180 Inboard Shaft Marine Diesel Engine uses a variable geometry turbocharger for quick acceleration. This 16-Valve MultiJet II package powers high-speed security interceptors, though operators must supply clean fuel through 2-micron filters and maintain scheduled sacrificial zinc changes in saltwater harbors.

Block structure relies on parent-bore cast iron paired with a 16-Valve aluminum alloy cylinder head featuring hydraulic tappets and double overhead camshafts. Electrical components operate on a 12V negative ground system using a 12V 2.0 kW starter motor and a 12V 105A marine alternator. Dry weight measures 529 lbs across an engine stance measuring 29.9in long by 26.8in wide and 28.0in high. Sump oil volume reaches 1.32 US gal.

Key Features of FNM 20HPE-180

Patrol boat operators buy FNM 20HPE-180 marine engines to obtain rapid throttle response on fast security interceptor hulls. This commercial workboat diesel engine repower package connects flush to ZF 45 and ZF 45A hydraulic marine transmissions.

• Variable geometry turbocharger adjusts turbine vane angles to boost low-end torque without engine lag under throttle load.
• MultiJet II electronic common rail injection operates at 1,800 bar to eliminate soot during acceleration runs.
• Hydraulic tappets inside the 16-Valve aluminum head eliminate manual valve lash checks between service windows.
• Seawater-cooled exhaust manifold and dual-circuit heat exchanger control operating heat inside enclosed engine compartments.
• Standard SAE 4 bellhousing flange couples flush with an internal flexible marine torsional damper plate.
• Compact 529 lbs engine dry weight prevents stern squat on high-speed commercial interceptor hulls.
• Heavy-duty 12V 105A marine alternator maintains full electrical charge for vessel radar and navigation screens.

Dynamometer Variable Geometry Turbine Metrics

Dynamometer testing documents 135 BHP continuous power at 3,600 RPM and 180 BHP intermittent power at 4,000 RPM. Shaft torque hits 258 ft-lbs at 2,000 RPM through variable turbine vane regulation. Common rail injection pressure holds at 1,800 bar while intake boost settles at 1.8 bar. Pre-turbine exhaust gas temperatures peak at 1,150°F under maximum continuous load. The heat exchanger stabilizes internal coolant at 185°F. Main crankshaft journal runout measures 0.0003in TIR, and lube oil pressure stays firm at 48 PSI across a 20° tilt.

High Speed Interceptor Maintenance Rules

Electronic throttle levers operate with 1 lb of smooth resistance without mechanical play. Do not install this high-RPM common rail engine into heavy displacement pushboats, coastal trawlers, or river towboats running continuous bollard loads. The intermittent power profile is engineered for commercial workboat diesel engine repower installations on fast pilot launches and security interceptors.

• Drain engine lube oil and replace the spin-on filter every 200 operating hours with 5W-40 oil.
• Replace primary 2-micron fuel water separator elements every 250 operating hours to protect MultiJet injectors.
• Check and replace heat exchanger sacrificial zinc anodes every 150 operating hours in seawater basins.

Commercial Marine Warranty Crate List

FNM CMD provides a 2-Year limited commercial marine manufacturer warranty for this propulsion package. The export crate includes the bobtail engine core, ZF 45 transmission, 12V starter, 12V 105A alternator, flexible vibration mounts, digital instrument panel, wiring harness, and complete factory operator service manuals.