A Motorcross Competitors Handy Suggestions To Understand When Choosing Motorcycle Engines
There has been incredible innovation and advancement when it comes to motorcycle engine design. The largest motorcycle produces including Yamaha, Honda, and Suzuki spent tons of money on R & D to produce the best performing engines for motorcycles.
The leading producers of cars will all say that the leading edge of engine innovation is with motorcycles instead of cars or airplanes. Many times the developments of the motorcycle engine winds up inside of cars. Better combustion is the key to all engine development. One of the newest innovations is the use of more than four valves per cylinder to create more flow area.
The change of the motorcycle engine from the traditional two valve models to four valve models was aimed to enhanced combustion.
When Honda first introduced the four valve engine back in the 1960s it allowed for the use of narrow valve angles and combustion chambers which where shallow which was able to provide good combustion when paired with a spark plug.
As early as the 1980s Yamaha was looking beyond the four valve engine for methods of using new head and valve configurations to improve combustion. They even went so far as to experiment with seven valves per cylinder designs. This design featured four intake valves and three exhaust valves.
Using five valves per cylinder allowed them to achieve the level of performance they desired. This design allows for an extra intake valve giving more air flow at low to medium valve lifts.
This is right where most engines spend the majority of their operating time. One of the biggest and most advanced manufacturers of motorcycle engines in North America these days is Honda.
They have fairly recently constructed a large state of the art plant which produces more than 500,000 high tech engines each year. At this new plant they are able to combine the most advanced techniques in manufacturing with leading edge engine design to produce a premium product.
Tags: domestic motorcycle engines, motorcycle engines
