Yanmar 3TNE84 Marine Diesel Engine

The Yanmar 3TNE84 is a 3-cylinder, 4-stroke, water-cooled diesel engine commonly used in marine applications. It has a bore of 84 mm and a stroke of 90 mm, with a displacement of 1.496 liters. The engine is known for its high power-to-weight ratio, reliability, low exhaust emissions, and low noise levels.

Specifications
* Number of cylinders: 3
* Bore: 84 mm
* Stroke: 90 mm
* Displacement: 1.496 liters (1.49 liters)
* Aspiration: Naturally aspirated
* Cooling system: Water-cooled
* Combustion system: Direct injection
* Rated Output: Various models offer different power ratings, but a common rating is 39 hp at 3,000 rpm. According to some sources, the engine can produce up to 39 hp at 3,000 rpm.
* Starting system: Electric starting motor (24V 4.0kW)

Marine Gear Specifications:
For marine applications, the 3TNE84 engine is often paired with a marine gearbox like the YX-30 gearbox. The YX-30 gearbox features a hydraulic multi-disc clutch, wet type and offers reduction ratios of 2.03, 2.55, 2.96, and 3.48.

Good oil pressure. No crank case blowby. Coolant jacket pressure test: No leaks for 10+ mins; No pressure build up when running.