Mermaid J-444TCA85 Mechanical Turbo Intercooled Marine Engine

Description

Securing heavy commercial bollard pull without electronic sensor vulnerabilities defines the core benefit of the Mermaid J-444TCA85 Mechanical Intercooled Engine. This turbocharged, intercooled 4.4L Inline-4 diesel generates 102BHP continuous output at 2,000 RPM. Keel-cooled plumbing isolates internal engine passages from corrosive seawater, though operators must verify correct skin cooler surface sizing for heavy continuous towing.

Cast iron monobloc construction shapes the parent-bore cylinder block and 16-Valve cylinder head with water-cooled aftercooler chambers. Electrical choices include 12V or 24V isolated ground systems mounting a 3.0 kW starter motor and 95A alternator. Unrigged dry weight totals 1,069 lbs without gearbox. The chassis envelope spans 37.0in long by 28.0in wide and 33.9in high. The heavy-duty oil sump holds 3.70 US gal and internal coolant galleries hold 4.62 US gal.

Key Features of Mermaid J-444TCA85 Mechanical

Harbor tug operators buy Mermaid J-444TCA85 Mechanical engines to secure continuous displacement thrust during heavy harbor barge assist work. The mechanical Delphi fuel system operates without microprocessors to avoid electronic fault codes at sea.

• A water-cooled charge air intercooler drops intake heat to supply 114BHP intermittent power at 2,200 RPM.
• The mechanical Delphi DP210 rotary injection pump ensures reliable fuel atomization under severe duty cycles.
• Monobloc cast iron engine blocks withstand high continuous combustion pressures without cylinder bore distortion.
• Keel-cooled closed grid plumbing eliminates raw seawater pumps and strainers in dirty harbor slips.
• An SAE 3 flywheel housing mounts heavy PRM 750 and Twin Disc transmissions.
• A deep 3.70 US gal lube sump provides adequate oil reserve for 500-hour drain cycles.
• The 95A marine alternator maintains full electrical charge across navigation radar and work lighting.

Continuous Duty Dynamometer Load Data

Continuous dynamometer evaluations certify 102BHP continuous P1 output at 2,000 RPM and 114BHP peak intermittent power at 2,200 RPM. Shaft torque reaches 360 ft-lbs at 1,500 RPM to turn heavy commercial workboat wheels. The water-cooled charge air intercooler keeps intake temps below 125°F while turbo boost stabilizes at 1.2 bar. Keel-cooled closed water circuits maintain engine block temperature between 175°F and 185°F. Crankshaft journal runout remains under 0.0004in TIR to protect bearings against continuous commercial towing loads.

Field Servicing Operating Hull Constraints

The heavy mechanical governor arm requires 6 lbs of actuation pull, providing firm detent holding in choppy seas. Naval architects must not specify this heavy displacement commercial diesel for planing family sportboats, offshore racing catamarans, or craft requiring lightweight high-RPM gasoline sterndrive powerplants.

• Drain and renew crankcase lube oil and spin-on filter every 500 operating hours or 12 months.
• Replace primary fuel filter elements and drain water traps every 250 operating hours.
• Check and clean the charge air intercooler tube core every 1,000 operating hours.

Factory Warranty Manifest Breakdown

Mermaid Marine backs this commercial marine engine with a 1-Year or 2,000-Hour warranty. The heavy wooden shipping crate includes the bare J-444TCA85 diesel engine, SAE 3 flywheel housing, SAE 11.5 flywheel, 95A alternator, 3.0 kW starter, engine mounts, instrument harness, and complete workshop maintenance documentation manuals.