To challenge the 1983 period, Yamaha brought out the YZR 500(OW70). You start with a two-cycle, water-cooled, four-cylinder motor, the YZR500 ended up being built with an abundance of innovative mechanics. Its four cylinders were divided into an upper and lower group composed of two cylinders each. Crankshafts had been attached to each team, giving a unique V-shaped layout. With the upper team positioned at a 40 level angle therefore the reduced group set very nearly horizontally, it boasts a reduced center of gravity. The compactness for the motor was further improved by the neat keeping the carburetor between the two groups of cylinders. The motor had been equipped with Yamaha's exclusive energy valve system (YPVS) and generates over 140hp. Parting through the trusted double-cradle style, Yamaha broke new ground in aluminum framework design and paved just how the subsequent Deltabox framework. The asymmetrical shape of the frame links the pivot points associated with steering mind together with rear swing supply in order to make for a sturdy yet lightweight understructure. Tadahiko Taira and Keiji Kinoshita, both riding YZR motorcycles, challenged the each Japan Road Race and gave Japan a glimpse of these speed. Taira proceeded to take the 1983 Series Title and successfully defend it throughout the next two years. The pride and joy of Japanese motorcycle racing, Taira later proceeded the challenge the greatest in the World Grand Prix Championships.
