Hyundai Seasall S270S Sterndrive Marine Diesel Engine Package

Description

Lower fuel consumption pairs with compact dimensions in the Hyundai Seasall S270S Sterndrive Package, producing 270BHP from a 3.0L 60° V6 platform. Peak power arrives at 3,800 RPM for fast planning craft. Advanced 1,800 bar piezo injection demands strict 2-micron filtration to avoid needle seizure. High power density requires proper engine bay air induction to prevent thermal throttling.

Compacted graphite iron forms the parent-bore cylinder block to resist combustion shock while shaving engine weight. Dual overhead camshafts drive 24-Valve aluminum heads to optimize air mass flow. The marine electrical plant features a 12V negative ground system with a 2.5 kW starter motor and 150A charging alternator. Dry base weight totals 739 lbs in an engine stance measuring 36in long, 33.1in wide, and 29.9in high holding 1.98 gal of oil.

Key Features of Hyundai Seasall S270S

Commercial vessel operators buy Hyundai Seasall S270S sterndrive engine package configurations to upgrade existing stern-drive workboats. The engine suits commercial workboat diesel engine repower projects where owners retain existing Bravo transom mounts to reduce conversion costs.

• Piezo common rail fuel injection supplies 1,800 bar injection pressure for clean exhaust output.
• Electronic variable geometry turbocharging spools instantaneous boost across mid-range engine speeds.
• Universal sterndrive bellhousing matches Mercruiser Bravo transom plate installation patterns.
• Marine torsional drive dampers isolate crankshaft vibrations from outdrive upper gear assemblies.
• Tubular heat exchangers manage heat rejection through high-volume seawater impeller circuits.
• Continuous P1 commercial rating supplies 200BHP at 3,500 RPM for sustained cruising.
• Intermittent P3 rating yields 270BHP at 3,800 RPM for high-speed interceptor tasks.

Dynamometer Load Test Bench Results

Controlled dynamometer tests confirm continuous 200BHP output at 3,500 RPM with top ratings reaching 270BHP at 3,800 RPM. Common rail delivery pressure maintains 1,800 bar alongside 1.85 bar absolute turbo manifold boost. Pyrometer readings on water-jacketed exhaust collectors remain below 1,280°F under peak load. Closed-circuit cooling liquid holds steady at 185°F through heat exchanger cores. Oil pressure records 58 PSI at rated cruising RPM. Crankshaft journal runout remains below 0.0005in TIR under static operating tilt angles up to 20°.

Field Maintenance Operation Service Instructions

Electronic helm controls actuate with precise throttle sensitivity requiring under 2 lbs of lever force. Do not specify this high-output sterndrive configuration for slow displacement canal barges or vessels that operate without primary centrifugal fuel filtration.

• Drain lube oil and change filter cartridges every 250 operating hours.
• Inspect heat exchanger sacrificial zinc anodes every 100 operating hours to stop galvanic damage.
• Replace primary 2-micron fuel water separator elements every 500 operating hours to preserve injectors.

Factory Warranty Equipment Delivery Manifest

Hyundai SeasAll backs each engine package with a 2-Year or 2,500-Hour commercial warranty. Standard crating includes the 3.0L bobtail engine, Bravo interface bellhousing, torsional drive plate, 12V 150A alternator, instrument display panel, intermediate wiring harness, mounting isolators, and factory installation manuals.