Yamaha and Mercury have stopped producing direct-injection 2-stroke outboards (Tohatsu still builds a few), but the latest-generation 4-strokes weigh the same as 2-strokes and offer the latest digital advances.
When did they stop making 2-stroke outboards?
In 2004, the Environmental Protection Agency (EPA) put an end to the 2-strokes dominance by enacting stricter limits on pollutants, and then in 2007, making the restrictions even stricter. It became evident that it would be necessary for the 2-stroke outboards to be re-engineered to become quieter and cleaner running.
Does anyone make 2-stroke outboards?
The two stroke outboards are lightweight and compact yet deliver high power output. The engine structure is relatively simple and maintenance is exceedingly easy. Although we have lineup of four strokes, we also offer an extensive two stroke lineup to meet diverse global needs.
Are 2-stroke outboard motors banned?
Two-stroke engines are not “banned” for use on all waterways in California, nor is there any plan to do so. … There are no salt-water or river restrictions in California on high-emission two-stroke engines, excluding personal watercraft (vessels such as Jet Skis) bans in some areas.
When did Mercury stop making 2-stroke outboards?
Mercury actually quit building all of its traditional two-strokes, from 2.5 hp to 200 hp, following the 2005 model year.
Why are 2-stroke engines banned?
Answer: Two-strokes left the market because they could not meet steadily-tightening EPA standards for vehicle exhaust emissions. … A four-stroke engine has a separate piston stroke for each of the four functions necessary to a spark-ignition engine: intake, compression, power, and exhaust.
How many hours does a 2-stroke outboard last?
A typical two-stroke or four-stroke outboard engine should provide 1,500 hours of run time. Based on the average use of 200 hours per year, this will last 7-8 years. However, changing your oil every 50 hours of operation and regularly flushing the engine can see your outboard engine last 10 to 20 years.
Which is better 2-stroke or 4 stroke?
Because 2-stroke engines are designed to run at a higher RPM, they also tend to wear out faster; a 4-stroke engine is generally more durable. That being said, 2-stroke engines are more powerful. Two-stroke engines are a much simpler design, making them easier to fix. They do not have valves, but rather ports.
Are 2-stroke faster than 4 stroke outboards?
Two-strokes tend to weigh less but can accelerate faster. Four-strokes tend to be quieter and have more torque than two-stroke outboards.
Why are 2 strokes so fast?
Two-stroke engine bikes are lighter and faster bikes that have an intense kick to the motor. This makes it easier to throw around your bike with the faster punch per cc. … Two-strokes also require more frequent shifting, but riders can get a faster top speed with more power.
Are 2 stroke engines reliable?
Two-stroke petrol engines are shockingly reliable, for exactly the reasons you point out. Simpler, with fewer moving parts than their rival 4-strokes. Two-stroke technology is the engine of choice for many applications, particularly where performance and reliability in a small package is important.
Can you still buy 2 stroke outboards in USA?
Two-stroke outboards are not banned
The newer generation of two-stroke outboard engines are equipped with direct fuel injection technology which reduces the engines’ emission level to meet the requirement of the Outboard Emissions Law. Only carburettor-based outboard motors will be banned starting July 1, 2019.
Are Yamaha 2 stroke outboards good?
With unmatched performance, legendary reliability, incredible power, industry-leading innovation and unique customer satisfaction Yamaha outboards are outstanding.
Does Mercury still sell 2 stroke engines?
Its official MERCURY NO LONGER MANUFACTURES 2 STROKE OUTBOARDS…………….. We will never look back “as long as we are able to afford the new stuff”. This progression has happened with motorcycles “200 hp in stock form and running sub 9 sec.
What was the last year Mercury made a 2 stroke?
Mercury just confirmed they are exiting the traditional two stroke (carbureted/EFI) outboard market at the end of 2005 model year. They will accept final orders through march 11 2005 to be shipped no later than May 27 2005.
Does Mercury make a 2 stroke outboard motor?
Mercury’s proven TwoStroke engines deliver easy starting, gutsy performance, and great all-round reliability. Across the range you’ll find an array of features that help keep your boating experiences more enjoyable and trouble-free.