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My initial mental association with “Honda V8” drew parallels to Indy car powertrains from a decade ago. However, it seems evident that the BF350 vastly differs from the high-cylinder-count beasts that Honda previously utilized in motorsports, as indicated in this footage.
Honda’s BF350 press release makes an automotive analogy: “The new outboard’s fully balanced, 60-degree offset crankshaft, is constructed using the same crankshaft alloy and tested to identical durability standards as the powertrain found in the renowned Acura NSX supercar. It negates the necessity for counterweights by seamlessly integrating with the 60-degree engine layout and nonlinear engine mount to provide exceptional performance with minimal vibration.”
While “tested to identical durability standards” may lack specificity, the core emphasis appears to have been on achieving smooth operation throughout the development phase. Honda explicitly stated that the BF350 was crafted to facilitate extended service intervals and simplify maintenance compared to predecessors, an aspect appreciated by enthusiasts with mechanical inclinations albeit lacking nautical experience.
Automaker Honda
Here are some specifics regarding the recent modifications done by the manufacturer, directly from Honda:
- A enhanced cover design of the motor, with grip locations situated on the upper and left/right sides, and an improved striker guide for easier removal and replacement;
- Increased cover durability and freshly crafted grommets for improved sealing and water resistance;
- Simplified approach to anodes for effortless anode substitution;
- The inclusion of an oil filter flange prevents oil spillage during oil filter change;
- A reimagined O-ring configuration of the thermostat cover prevents water leaks, and new drainage piping eliminates residual water in the thermostat to prevent sticking;
- An enhanced gearbox/gearcase shape reduces underwater resistance and enhances fuel efficiency;
- Service intervals between various routine maintenance tasks are extended; for instance, due to the inclusion of wear-resistant iridium plugs as standard equipment, the intervals between spark plug replacements are longer;
- Materials and coatings such as anti-corrosion paint and coating contribute to an improved, resilient anti-corrosion protection; a three-dimensional emblem and trim in chrome plating provide a premium, stylish appearance.
The primary specifications of the BF350, aside from its 350-horsepower output rating at 5,000 rpm:
- Four-stroke, SOHC, 32 valves (and of course, eight cylinders)
- Compression ratio of 10:1
- Weighs between 765 pounds to 776 pounds when dry, without a propeller (add approximately 17 pounds for the propeller)
Other mainstream engine companies like Yamaha and Mercury Marine have also introduced V8 outboard engines. While the BF350 may not be pioneering in terms of innovation, companies such as Seven Marine have already set benchmarks with their powerful 6.2-liter GM V8 engines mounted on boats for incredible speed. Nonetheless, this new V8 engine from Honda could be an appealing choice for scenarios requiring a blend of power and sophistication on the water.
Honda has indicated that it will reveal the availability and pricing of the BF350 in early 2024. The BF250, currently their flagship model, has a price tag in the vicinity of $25,000, so one can anticipate the cost of this new V8 to be significantly higher once it is released for purchase.
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