Hyundai Seasall R200J Waterjet Inboard Marine Diesel Engine

Description

Does your river rescue craft lose pump thrust when skimming across shallow gravel shallows? The Hyundai Seasall R200J Waterjet Marine Diesel Engine generates 200 BHP at 3,800 RPM from an ultralight 617 lbs aluminum-head package. Operators must flush raw water circuits after silt operations to prevent abrasive sand erosion inside the aluminum heat exchanger housing.

Engineers construct the cylinder block from parent-bore gray iron to maintain lower cylinder roundness under high turbo pressures. The cross-flow 16-Valve aluminum alloy cylinder head uses double overhead camshafts to actuate lightweight valves with minimal reciprocating inertia. The 12V negative ground electrical setup includes a 12V 2.2 kW starter and a heavy 12V 150A alternator. Dry engine mass measures 617 lbs within a mounting stance measuring 34.0in length, 28.1in width, and 28.1in height with a 1.72 gal oil pan.

Key Features of Hyundai Seasall R200J

Municipal rescue agencies buy Hyundai Seasall R200J waterjet marine engines to power fast shallow-draft flood boats and rapid river patrol tenders. The forward-mount SAE 4 bellhousing includes a specialized intermediate flange connecting to HamiltonJet HJ213 and Alamarin-Jet AJ 230 waterjet propulsors.

• Electronic variable geometry turbocharger spools up without hesitation to provide immediate pump impeller acceleration.
• Seawater-cooled charge air intercooler drops air induction temperatures to prevent thermal detonation under boost.
• Piezoelectric common rail injection operates up to 2,000 bar for clean combustion without diesel soot.
• Closed tubular heat exchanger isolates internal engine coolant passages from abrasive river mud and sand.
• Double overhead camshaft valve train maintains exact valve timing through 3,800 RPM wide-open throttle sprints.
• High-capacity 12V 150A alternator supplies abundant electrical power for high-draw emergency searchlights and sirens.
• Intermediate waterjet drive flange eliminates bulky reduction gearboxes to minimize overall vessel weight.

Dynamic Bench Load Tolerances

Dynamometer testing documents 150 BHP continuous output at 3,500 RPM and 200 BHP peak sprint power at 3,800 RPM. Peak shaft torque reaches 325 ft-lbs at 2,000 RPM, maintaining strong pump impeller grip across turbulent aerated river currents. Piezo common rail injection pressure holds 2,000 bar, while exhaust manifold pyrometers track below 1,120°F at full throttle. Heat exchanger jackets hold engine coolant at 185°F under continuous run cycles. Crankshaft main journals check within 0.0003in TIR runout, and the oil pan supports static vessel installation tilts up to 20°.

Field Usability Maintenance Protocol

Digital electronic throttle signals command injection events via CAN bus, eliminating mechanical push-pull cable drag, helm friction, and control bind. Do not install this 3,800 RPM lightweight waterjet package in heavy commercial workboat diesel engine repower craft that turn large underwater propellers on continuous displacement trawlers.

• Drain 1.72 gal of crankcase engine oil and install fresh lube filter canisters every 300 operating hours.
• Replace primary fuel water separators and secondary 2-micron fuel filter cartridges every 250 run hours.
• Inspect sacrificial zinc pencil anodes within the raw water heat exchanger circuit every 100 service hours.

Verified Warranty Crate Manifest

Hyundai SeasAll protects this high-speed waterjet engine with a 2-Year or 2,500-Hour commercial warranty. Each shipping crate contains the complete R200J engine, SAE 4 intermediate drive flange, 12V starter, 150A alternator, rubber isolation mounts, digital instrument panel loom, and factory maintenance documentation to guide shipyard installation teams.