What is more fuel efficient 2-stroke or 4-stroke?

2-strokes are more fuel efficient than 4-strokes when run at or just above idle, and again above three-quarter throttle, because the fuel is being monitored so precisely. 4-stroke has a distinct fuel economy advantage at middle rpm (2,500 rpm to 5,000 rpm), he says.

How many hours will a 2-stroke outboard last?

1,500 hours
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.

Why is a 4 stroke better than a 2-stroke?

“Typically, 2-stroke engines rev up to higher speeds than 4-stroke engines, and this accounts for much of the higher power per pound,” Parish says. “Also, small 2-stroke engines use intake and exhaust ports instead of valves, thus saving the weight and cost of a valve train.

How long does a 2-stroke engine last?

A 2-stroke piston can last over a hundred hours if the bike was casually ridden and properly maintained, but an aggressive motocross racer can wear out a top-end in less than 20 hours of ride time.

Is it bad to run an outboard engine at full throttle?

Does this mean an engine should never run at wide-open throttle (WOT)? Absolutely not. Modern engines are designed to handle WOT. Also, during break-in going to WOT, as prescribed by the owner’s manual, is necessary to properly seat the pistons’ rings.

Is 2 cycle outboard more powerful than 4 stroke?

Added Power: Two-stroke outboards fire for each revolution of the engine instead of every other revolution as in four-stroke engines. This makes two-stroke outboards more powerful than the four-stroke variety. More Robust: A two-stroke engine works in different orientations. This factor makes it a more robust engine than the four-stroke engine.

What is better 2 stroke or 4 stroke?

Efficiency: The thermal and engine efficiency of 2 stroke engine is much better than that of a 4 stroke engine. Power: Most of the 2 stroke engines are now large stroke engines that produce more power. Hence they have high power to weight ration as compared to 4 stroke engine.

What is the diffrence between a 2 stroke engine and a 4 stroke?

Four-stroke engines allow each stroke to happen independently. A two-stroke engine requires the four processes to occur in a downward and upward stroke, which gives the two-stroke its name. Another difference is that two-stroke engines don’t need valves because intake and exhaust are part of the compression and combustion of the piston.

What has more power 2 or 4 stroke?

A common belief is that a fourstroke outboard has more power than the two-stroke variety. Hence a four-stroke outboard should be the preferred choice. To begin with, this is a misconception as the reverse is true. Secondly, several factors decide which of the two types of outboards will be suitable.