First Honda four-stroke outboard motor released in 1964.
Four-stroke engine customer satisfaction is the highest and has received the Customer Service Award.
engines by J.D. Power and Associates were tied. Every model in our selection keeps going
Honda obtains a four-stroke outboards customer satisfaction award from
J.D. Power and Associates*and a CSI Award for customer satisfaction for the sixth straight year
the Honda Marine line-up, which won the 2011 IBEX Outboard Innovation Award
NMMA, the tenth year in a row that the business has been honored for excellence
The business has received awards every year for outstanding customer satisfaction.
among four-stroke engines, obtained the highest numerical rating in the proprietary
2009 Marine Engine Competitive Information StudySM by J.D. Power and Associates.
opinions of customers who bought boats between January 2007 and May 2008. a private study
Results are based on the opinions and experiences of owners who were polled between September and November.
2008. Your results may be different. Visit
In This Article...
Honda outboard motors switched to fuel injection in what year?
Honda Marine has consistently focused on four-stroke technology for outboards, in contrast to Evinrude and its emphasis on two-strokes. Naturally, four-stroke engines dominate the automotive industry, and the whole Honda Motor Co. has a strong interest in these engines. But four-strokes are more than just a design that one is familiar with; one also believes in them.
“Mr. Honda observed two-stroke engines spewing oil and smoke into the air and ocean. According to senior OEM sales manager Dennis Ashley, he began his pioneering work on the four-stroke side to preserve the environment.
The GB25 and GB40 were the first Honda fourstroke outboards to be sold in the US in 1967. However, it took some time for four-stroke engines with more horsepower to emerge; Honda’s 130 hp model didn’t top 100 hp until 1998. Additionally, that engine included Honda’s first ECM and electronic fuel injection.
According to Ashley, four-stroke Honda outboard motors were the first to pass the EPA’s stricter 2006 emissions requirements in the same year.
Honda VTEC Origins
In 2001, Honda gained notoriety with its BF225 when boaters started to adopt four-stroke engines. (Yamaha debuted a comparable 225 in the same year.) According to Ashley, Honda’s industry-first Variable Valve Timing and Lift Electronic Control, a technological transfer from the auto sector, was essential to that larger four-stroke.
“The lift and duration of the valves’ opening and closing are altered by VTEC. According to him, the lift is the height at which the valve opens to admit additional air and fuel, and the duration is the length of time it is left open. ” No one else can alter the lift or duration while the engine is running, but everyone can alter where the air and fuel come from.
According to Ashley, several outboard engine manufacturers use variable valve timing but change it using a cam phaser. The procedure increases driving comfort at low rpm, “but won’t maximize the engine’s performance when high rpms are required.
In VTEC, “Similar to having two cam shafts in your car—one for high-rpm power and the other for low-speed function, he continues.
Honda outboard motors are fuel injected.
PGM-FI (programmed fuel injection) is available on the BF75, BF90, and BF100 for quick throttle response and reduced fuel usage. Additionally, each of the three engines has Honda-only innovations like BLAST for quick acceleration, Lean Burn Control for better fuel economy, and a 3-Way Cooling System for enduring, dependable performance. All motors of this size come with Power Tilt & Trim as standard equipment, and a multi-function tiller handle is an option.
Honda’s Variable Valve Timing & Lift Electronic Control (VTEC) system, which is available on the BF90 and BF100, delivers power when and where you need it.
Yamaha outboard motors switched to fuel injection when?
Systems for fuel injection significantly improve the efficiency and greenness of marine engines. The first Yamaha marine engines using an electronic fuel injection system were the 2-stroke V6 OX66-based*2 engines (150–250 horsepower) released in 1996. They were created by Sanshin Industries Co., Ltd.*3 were initially intended for the American market. The OX66 was the first 2-stroke outboard engine from Yamaha to feature a fuel injection system, as well as the oxygen sensor for a 2-stroke engine. The oxygen sensor for these 2-stroke outboards was installed in a resonator chamber next to the cylinder (#4) to protect it from seawater backwash, unlike 4-stroke vehicle or motorcycle engines where the sensor is located in the exhaust pipe. With the help of this ground-breaking Yamaha air-fuel ratio feedback control technology, the electronically controlled fuel injection system was more precisely managed, resulting in excellent performance and good fuel efficiency.
The 1999-released Z200N 2-stroke V6 outboard motor had a High Pressure Direct Injection (HPDI) system, which was another ground-breaking innovation. This was the first high-pressure, airless direct-injection fuel injection system for a 2-stroke engine in the world (#5). The fuel is injected at 7341,028 psi, or 5070 atmospheres, which atomizes the fuel droplets to just a few tens of microns. In comparison to conventional systems, where the fuel is injected into the intake pipe, this encourages much finer atomization, resulting in extremely efficient burning with a lighter fuel charge. Since the injection is timed to occur as the exhaust port completely closes, there is almost none of the “2-stroke engines frequently suffer from blowback, so eliminating this leads to significant benefits in fuel economy and exhaust pollutants. Yamaha’s electronically-controlled fuel injection systems have developed in response to client requests in this way.
*1: To estimate the combustion conditions, an oxygen sensor measures the amount of oxygen still present in the exhaust. The fuel distribution is then electrically controlled and optimized using that information (air-fuel ratio). As a result, there is an increase in power output, a decrease in fuel consumption, fewer emissions, and better exhaust gas catalysis.
*2: The oxygen sensor and the “O” in OX66 are “The format X denotes a V-engine. Each of the six cylinders has its own fuel injector, as indicated by the two sixes.
*3: Sanshin Industries Co., Ltd. was founded in 1960 as a division of Yamaha Motor that produced marine engines. Its primary activity was the creation and production of engines under the Yamaha brand. The business was renamed Yamaha Marine Co., Ltd. in 2003, and it merged with Yamaha Motor Co., Ltd. in 2008.
Is an outboard with fuel injection better?
In addition to maintaining good fuel efficiency, the Electronic Fuel Injection technology is reasonably environmentally benign due to minimal emissions. beating its carbureted competitors in terms of operating costs by a wide margin.
We must pay particular attention to the outboards’ size and weight because those factors are important.
In any fishing setting, engines like Mercury Marine FourStroke ProKicker outboards give tournament-grade trolling performance. They are made to be strong and have superior control when moving bigger, heavier boats at lower trolling rates.
When did Honda begin producing 4-stroke outboard motors?
First Honda four-stroke outboard motor released in 1964. 1967 saw the debut of the first Honda outboard in America. Customers could choose from a full range of four-stroke Honda models for the first time in 1985. 1990 The IMTEC Innovation Award goes to our BF45.
Honda 9.9 outboard motor has fuel injection.
An automatically controlled start-up fuel enrichment mechanism is included with Honda 9.9 HP outboard motors. It guarantees your engine has the best possible air-fuel ratio. As a result, choke operation tasks are removed. The engine start-up process is substantially simplified as a result.
This outboard is lightweight and rounded for easy transportation. The BF9.9 is a convenient transport option for fishing boats and inflatables up to 1012 feet long. A high output charging system is included with all electric start variants. At 3,000 RPM, it is intended to deliver 12 Amps.
An ignition system that is preset to start the engine lessens the effort needed to pull it started. The forward-mounted shift lever gives you better control and comfort when shifting. The quick-twist throttle friction adjuster is the last component. By adjusting the throttle tension, you can lessen driver fatigue.
Are fuel-injected 4-stroke outboards commonplace?
The lubrication system of a four-stroke engine is similar to that of an automobile, complete with an oil pan and filter. Along with the cylinder heads, a four-stroke engine also consists of valves, springs, shims, keepers, valve lifters, camshafts, timing gears, belts, a crankcase, and other parts. The majority of four-stroke engines have advanced computer fuel injection and engine management systems. Low emissions, excellent fuel efficiency, and strong performance over the power spectrum are all made possible by this. The majority of four-stroke engines are fuel-injected rather than direct-injected, however some of the lower horsepower models are carbureted. The advanced multi-port systems (MPI) used in automobiles and motorcycles are the inspiration for four-stroke fuel injection. Fuel injected Four-Stroke engines have a very quick throttle response due to the placement of one injector per cylinder strategically close to the intake valve.
What kind of outboard motors have fuel injection?
Outboard Motors with Fuel Injection
- Tohatsu 20 HP MFS20ES in 2023. twenty horsepower Weight: 95.0 lbs.
- Tohatsu 20 HP MFS20EEFS in 2022. twenty horsepower Weight: 104 lbs.
- 15 horsepower Tohatsu 15 HP MFS15ES, 2022
- 15 horsepower Tohatsu MFS15EEFS from 2022.
- 20 HP MFS20EEFTS from Tohatsu in 2023.
- Tohatsu 9.9 HP MFS9. 9ES in 2022.
The Birth of BLAST
A market dominated by 2-stroke engines welcomed Honda’s first outboard engine in 1960.
Although 2-stroke engines are lightweight, have a simple design, and have the advantage of having a high output from a small displacement, 4-stroke engines have better environmental performance and fuel efficiency.
Honda has constantly created eco-friendly 4-stroke outboard engines since its inventor wanted to avoid contaminating the water we ride on.
The objective was to create a 4-stroke engine with acceleration comparable to a 2-stroke while preserving fuel efficiency and environmental performance in order to experience Honda’s distinctive delight of sailing. The solution was BLAST, a special ignition timing and air/fuel ratio system developed by Honda and originally installed on the BF90 in 2006. It is now a standard feature on the BF40-BF250 models*.
BLAST Mechanism and Advantages
The boat’s bow will be elevated (bow up) if there is insufficient power (torque) when accelerating from a stop, making the ride uncomfortable and preventing the boat from planing, which is the most fuel-efficient state.
2-stroke engines accelerate more quickly from a stop than 4-stroke engines because they are lighter and have more power (torque). With a 4-stroke engine, BLAST sought to achieve the same acceleration.
By regulating the air-fuel ratio and spark-advance control, BLAST increases torque for full-throttle acceleration while deciding ignition timing close to knocking restrictions.
BLAST improves acceleration from a stop and hastens the boat’s transition to the fuel-efficient planing mode.
In a 4-stroke outboard engine, BLAST achieves both the pleasure of sailing and greater fuel economy and environmental performance.