3JH4E
JH4-generation Yanmar diesel: naturally aspirated 1.642 L inline three rated 40 hp at 3000 rpm, a standard auxiliary in sailboats up to about 40 ft.
The JH4 series (2004) introduced a new 88 mm-bore block and combustion system for the naturally aspirated models (3JH4E 1.642 L, 4JH4E 2.19 L) with the rated speed cut to 3000 rpm; Yanmar claimed about 25% more torque and lower noise than the JH3. The turbo JH4 models (4JH4-TE, 4JH4-HTE) kept the 84 mm-bore 1.995 L block at 3200 rpm.
The 3JH4E replaced the 3JH3E. Yanmar offered it with KM35P parallel or KM35A down-angle gears or coupled to the SD50 saildrive.
It was replaced by the mechanically similar 3JH5E around 2010.
Specifications
Power
- Power
- 40 hp
- Power (kW)
- 29 kW
- Rated speed
- 3000 rpm
Engine
- Configuration
- inline 3
- Cylinders
- 3
- Displacement
- 1.642 L
- Aspiration
- naturally aspirated
- Weight
- 173 kg
- Fuel
- Diesel
- Mounting
- Inboard
Reviews
No independent reviews on file yet.
Sources
- 1. JH4 Series Operation Manual (3JH4E, 4JH4AE, 4JH4-TE, 4JH4-HTE), (c) 2006, specifications pp. 87-99 — Yanmar Marine International (via ManualsLib)
- 2. Yanmar type 3JH4E technical data sheet ('The Powerful Gem') — Yanmar (hosted by LSM Diesel)
- 3. Yanmar Marine Engine Outline 2010 (Exhibit A: model years by series) — Yanmar America outline, hosted by Toad Marine Supply
Specifications compiled from manufacturer sources.