The V4 engine is a compact internal combustion engine with four cylinders in a V-type engine block. It is commonly used in motorcycles, outboard boat engines, and construction equipment. Both liquid-cooled and air-cooled versions are available, and it is known for its smooth operation and minimal space requirements.
A V4 engine is an internal combustion engine that uses four cylinders running in a V-type engine block. Typically found in smaller motorcycles and outboard boat engines, a V4 engine is made up of two sets of two pistons attached to a single crankshaft and firing on opposite cylinder banks. The V4 engine takes up less physical space than an inline or straight-four would require, and many V4 users find the V engine to run much smoother than the inline variety. Many cars are powered by a V8 or V6 engine, and the V4 engine works on the same principle, albeit on a smaller platform.
Both liquid-cooled and air-cooled versions of the V4 engine are available for use in a wide range of vehicles and machines. Motorcycles using the liquid-cooled style of V4 engines have been among the fastest and most reliable for decades. In 1983, the Honda V65 Magna with its V4 engine was the fastest production motorcycle ever made. The liquid-cooled V4 continues to be installed in newer motorcycle models from almost every motorcycle manufacturing company around the world.
Many outboard motor manufacturers have begun using the V4 engine as a platform to showcase their latest models. With four-stroke variants that have as much or more power than the vehicle that tows the boat into the water, these V4 outboards take up minimal room and displace an enormous amount of power. The V4 engine design produces less torque transmitted through the steering gear, which equates to easier boat handling. The smooth operation of the opposed four-cylinder engine allows the boat to run at very slow speeds without creating a great deal of vibration.
In air-cooled form, the V4 has been used on construction equipment in many guises. From generators to portable welders to roller balers, the Wisconsin air-cooled engine has been a construction mainstay. By using an air-cooled version of the V4 engine, the kit can be used continuously all day without fear of overheating in all kinds of weather. This can be beneficial to construction crews by reducing downtime due to overheating engines, as well as providing equipment that doesn’t freeze up in cold weather or require the added weight of a fluid-filled radiator. The V4 engine is often a good choice for equipment on the job site, as well as powering vehicles for relaxation and fun-filled hobbies.
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