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The Beta Marine Engine – Beta 38 is a naturally aspirated 4‑cylinder diesel engine delivering 38 hp (27 kW) at 3,600 RPM. With a displacement of 1,498 cc and weighing approximately 168 kg, it’s ideal for sailboats of 37–39 ft (≈9‑10 tons), offering robust performance, quiet operation, and full marine-grade reliability.
Key Features
- 4‑cylinder naturally aspirated Kubota‑based engine.
- Displacement: 1,498 cc; bore 78 mm × stroke 78.4 mm :contentReference[oaicite:1]{index=1}.
- Heat exchanger cooling, fresh/seawater pumps, and wet exhaust manifold.
- High‑inertia flywheel and intake silencer for smooth, quiet running.
- Standard 65 A alternator (upgradeable to 70–100 A).
- ABV control panel, flexible mounts & coupling.
- Transmission: TMC 60 gearbox (~2:1) with additional gearbox options :contentReference[oaicite:2]{index=2}.
- Installation angles up to 15° static, 25° when heeling :contentReference[oaicite:3]{index=3}.
Duty Cycle & Usage
- Application: Mid-size marine propulsion
- Load Variations: Light to moderate
- Load Factor: 40%–80%
- Annual Use: Up to ~2,000 hours/year
Technical Specifications: Beta 38 Marine Engine
| Power Output | 38 hp (27 kW) @ 3,600 RPM |
|---|---|
| Cylinders | 4 inline |
| Displacement | 1,498 cc |
| Bore & Stroke | 78 × 78.4 mm |
| Cooling System | Fresh/raw water heat exchanger Wet exhaust manifold |
| Fuel System | Indirect injection, mechanical governor, fuel & oil filters |
| Alternator | 65 A @ 12 V (upgradeable to 70–100 A) |
| Transmission | TMC 60 (~2:1); options: Technodrive, PRM, ZF gearboxes :contentReference[oaicite:4]{index=4} |
| Dry Weight | ≈ 168 kg (370 lb) |
| Start System | 12 V electric starter |
| Control Panel | ABV series with tachometer, hour-meter, alarms |
Operating Conditions
- Ambient Temp: ≤ 45 °C
- Fuel Type: EN 590 marine diesel
- Installation Angles: ≤ 15° static / ≤ 25° heeling :contentReference[oaicite:5]{index=5}.
Applications
The Beta 38 Marine Engine is ideally suited for:
- Sailboats 37–39 ft (≈9–10 tons displacement)
- Classic yachts, tenders, and light trawlers
- Atomic 4 repower projects
- Medium-displacement retrofit installations
kW 27
RPM 3600
Duty Mid-size marine propulsion
Emissions RCD II / Recreational Craft Directive compliant
