FNM 13HPE-110 Alpha Sterndrive Adapter Marine Diesel Engine

Description

Replacing thirsty gasoline V6 and V8 sterndrives, the FNM 13HPE-110 Alpha Sterndrive Adapter Marine Diesel Engine produces 110 BHP at 4,000 RPM from a 1.3L 4-Cylinder block. This compact 16-Valve MultiJet package matches Mercruiser Alpha outdrives, though boat mechanics must install strict 2-micron primary fuel filtration and replace raw water sacrificial zincs in saltwater basins.

Engine structure combines a parent-bore cast iron block with a 16-Valve aluminum alloy cylinder head and double overhead camshafts. Electrical components operate on a 12V negative ground system powered by a 12V 1.3 kW starter and a 12V 90A marine alternator. Dry weight totals just 364 lbs within an ultra-compact engine stance measuring 27.0in long by 24.0in wide and 25.4in high. The marine oil sump holds 1.19 US gal.

Key Features of FNM 13HPE-110

Water taxi operators buy FNM 13HPE-110 marine engines to cut fuel consumption on commercial passenger skiffs. This gas-to-diesel commercial workboat diesel engine repower package bolts flush to Mercruiser Alpha One and Alpha Gen II sterndrives.

• High-pressure MultiJet common rail injection atomizes fuel at 1,600 bar for smoke-free acceleration.
• Mercruiser Alpha sterndrive adapter bellhousing matches factory transom plates without custom fiberglass cutting.
• Seawater-cooled charge air intercooler drops intake air temperature to maximize combustion efficiency.
• Double overhead camshaft 16-Valve cylinder head design optimizes high-RPM breathing up to 4,000 RPM.
• Closed-circuit tubular heat exchanger with zinc anodes isolates seawater from aluminum head metallurgy.
• Compact 364 lbs dry weight prevents stern squat on lightweight rigid inflatable boats.
• High-output 12V 90A alternator supplies ample electrical power for commercial radar and navigation screens.

Dynamometer Test Limits Thermal Tolerances

Dyno bench runs document 80 BHP continuous output at 3,600 RPM and 110 BHP intermittent sprint power at 4,000 RPM. Maximum shaft torque reaches 148 ft-lbs at 1,800 RPM. High-pressure common rail injection operates at 1,600 bar with turbocharger boost pressure hitting 1.5 bar. Exhaust temperatures before the water-jacketed elbow remain under 1,110°F during high-speed testing. The heat exchanger stabilizes internal coolant at 185°F. Main journal runout measures 0.0003in TIR, and lube oil gallery pressure settles at 45 PSI across a 20° tilt.

Sterndrive Repower Operations Maintenance Guidance

Electronic throttle levers operate with 1 lb of smooth helm resistance. Do not drop this light high-speed automotive-derived diesel engine into heavy displacement pushboats, coastal tugs, or craft requiring slow continuous bollard towing. The sprint package is engineered for light commercial workboat diesel engine repower installations on high-speed RIBs and water taxis.

• Drain engine oil and replace the spin-on oil filter every 200 operating hours using synthetic 5W-40 oil.
• Replace primary 2-micron fuel water separator canisters every 250 operating hours to protect common rail injectors.
• Inspect and replace heat exchanger sacrificial zinc anodes every 150 operating hours or 3 months in seawater.

Commercial Marine Warranty Crate Details

FNM CMD provides a 2-Year limited commercial marine manufacturer warranty for this propulsion unit. The shipping crate includes the bobtail engine core, Mercruiser Alpha adapter kit, drive coupler, 12V starter, 12V 90A alternator, digital instrument panel, wiring extension harness, vibration mounts, and technical factory installation manuals.