Quiet, efficient BETA 50 diesel installs, diagnostics, and maintenance—mobile service in Santa Barbara, Ventura, Oxnard & Channel Islands Harbor.
BETA 50 at a Glance — Specs You Provided
- Rated power: 34.0 kW / 45.6 hp @ 2,800 rpm
- Aspiration: Natural
- Cylinders: 4
- Displacement: 2,197 cc (≈134 in3)
- Dry weight: ≈260 kg (≈573 lbs)
- Transmission: TMC60 (Standard)
- Alternator: 70 Amp (12 V) standard
Emissions: EPA Tier III compliant for recreational or commercial use (must be ordered for the correct application; use cannot be changed after shipment).
Complete BETA 50 Diesel Service — What’s Included
Cooling System Care
Heat exchanger service, coolant checks, zincs, hoses/clamps, and heat exchanger components—we keep temperatures stable under load and prevent scale that robs efficiency.
Fuel System Reliability
Mechanical lift pump, primary/secondary filters, water separation, and line integrity. Clean fuel equals crisp starts and steady cruising RPM.
Electrical & Charging
70A alternator output tests, belt tracking/tension, battery state-of-health, and starting circuit verification for dependable cranking.
Driveline & Controls
TMC60 inspection, fluid checks, and Morse-type throttle/shift geometry so engagement stays smooth and predictable around docks.
Vibration & Noise
Heavy-duty engine feet and flexible mountings reduce resonance; the quiet air intake filter further lowers cabin noise for longer passages.
Operator Interface
“C Deluxe” panel setup: tach/hour meter, key start, push-button stop, “power on” indicator, and alarm suite (oil pressure, temp, alternator charge) with 3m harness.
Each visit concludes with a written report, photos where helpful, and prioritized recommendations—perfect for maintenance records and resale value.
Custom Engine Mounts — Faster, Cleaner Repowers
Engine bearers vary widely. When standard feet don’t line up, we specify bespoke mounts so your new engine “drops in,” aligns with the shaft, and minimizes vibration. Learn more about options from Beta Marine here:
Custom / Seagoing Special Feet.
Why Boaters Choose the BETA 50
Reliable Power
Proven Beta Marine durability with smooth low-RPM control for docking, tight channels, and coastal cruising.
Low Operating Cost
Efficient combustion and mechanical simplicity help control fuel burn and reduce lifetime maintenance spend.
Compact Footprint
Streamlined installation in tight compartments; ideal for repowers in classic sailboats and compact powerboats.
Quiet & Comfortable
Flexible mounts and a quiet intake filter keep conversation easy in the cockpit and cabin during long passages.
Professional Installation & Repowering with the BETA 50
Proper installation is just as important as engine selection. Our technicians handle alignment, control geometry, fuel system optimization, and cooling layout to factory-informed standards. We adapt feet and mount heights to your bearers, validate shaft angle and coupling engagement, and confirm clean exhaust routing to prevent water ingress.
The result: quicker installs, less vibration, better charging performance, and a quiet, efficient cruise profile that fits the way you actually use your boat along the Central Coast.
Maintenance Tips for Long-Lasting Performance
- Oil & filter: change roughly every 100–150 hours or annually to protect internals and maintain efficiency.
- Fuel system: keep filters fresh, monitor for water/biological growth, and use high-quality marine diesel.
- Cooling: inspect raw-water pump and heat exchanger; confirm coolant type and concentration.
- Belts & hoses: check for cracks, glazing, and proper tension/track.
- Electrical: verify 70A alternator output and battery state-of-health; clean terminals and grounds.
- TMC60 transmission: fluid checks and shift-cable geometry for smooth engagement and long life.
How the BETA 50 Stands Out
- Lower installation complexity from compact dimensions and flexible mounting options.
- Strong fuel economy for its displacement and output, helping reduce operating costs.
- Quieter operation that suits family cruising, charter comfort, and long deliveries.
- Global support network with reliable parts access and trained diesel technicians.
Many owners replacing aging legacy diesels choose the BETA 50 for a cost-effective, reliable step-up in comfort and serviceability.
Serving Santa Barbara, Ventura, Oxnard & Channel Islands Harbor
We tailor service to local conditions—kelp, swell, and busy harbor traffic—so your diesel stays reliable when you need it most. Our mobile team meets you at your slip or mooring with the right tools, parts, and diagnostics.
- Santa Barbara: Yacht clubs, marinas, and coastal cruisers.
- Ventura Harbor: Recreational fleets and working boats.
- Oxnard: Fishing vessels, cruising yachts, and charters.
- Channel Islands Harbor: Liveaboards and charter operators who need prompt dockside support.
Why Central Coast Captains Choose 805 Marine Mechanic
- Inboard diesel specialists: We service marine diesels only—no gasoline or outboards.
- Factory-informed procedures: Methods aligned with Beta Marine best practices and local realities.
- Transparent estimates: Clear options, realistic parts timelines, and dependable completion targets.
- Root-cause diagnostics: We fix underlying issues to minimize repeat visits and downtime.
- Clean, professional work: Tidy bilges, labeled systems, and photo documentation every step of the way.
Helpful Resources
Frequently Asked Questions
Is the BETA 50 suitable for both recreational and commercial use?
Yes—it’s EPA Tier III compliant for both, but the application must be specified at purchase and cannot be changed after shipment.
Can you come to my slip in Santa Barbara, Ventura, Oxnard, or Channel Islands Harbor?
Absolutely. Our mobile service brings tools, parts, and diagnostics directly to your location whenever feasible.
What routine maintenance matters most on the BETA 50?
Regular oil/filter service, clean fuel filtration, cooling-system care, and belt/electrical checks keep performance strong and reliable.
Do you work on non-Beta engines?
Yes—inboard marine diesel only. We do not service gasoline or outboard engines.