Yamaha Motorcycle Engine Serial Number Decoder

#Yamaha Motorcycle Engine Serial Number Decoder code
#Yamaha Motorcycle Engine Serial Number Decoder series

The 750 engine also received a plain bearing crankshaft and higher geared oil pump to increase oil pressure to the crank.

#Yamaha Motorcycle Engine Serial Number Decoder code

In the Americas the GS code continued to be used for both four and two valve per cylinder machines.

The new heads incorporated Suzuki's Twin Swirl Combustion Chamber (TSCC) technology and machines sporting the new technology were designated as GSX models in Japan, Europe, Africa, Australia, New Zealand, and many other markets, differentiating them from their two-valve per cylinder stable mates. In 1980 the first major upgrading of the 750cc and 1000cc machines with 16-valve (four valves per cylinder) heads with the valves being actuated though short forked rockers, and the enlargement of the litre bike to 1100cc (actually 1074cc). The original GS engine designs share common engine design elements of air-cooling, roller bearing crankshafts, two-valves per cylinder servicing a hemispherical combustion chambers with domed pistons and double overhead camshafts (DOHC) operating directly on shim and bucket tappets. In Europe, Yoshimura GS1000-powered Formula 1 bikes won the Formula TT World Championship ridden by Graeme Crosby in 19. The bike won the Australian Castrol Six Hour race in 1979. The good handling chassis and reliable, over-engineered engines made the four cylinder GS bikes ideal platforms for motorcycle road racing, with the GS1000 tuned by Pops Yoshimura winning the 1978 Daytona Superbike race, the 1978 Suzuka 8 Hours in Japan, and the AMA Superbike national championship in 19 with rider Wes Cooley.

The GS range was expanded in subsequent model years with a smaller 550cc four-cylinder GS550 and larger GS1000 added in 1977 with the range ultimately including 125cc single cylinder machines the GS125 and larger retro-styled machines such as the GS1200SS. The eight-valve design was later used on the GS500. The GS400 was initially bored out to 423В cc (GS425), and subsequently enlarged to power the four-valve GS450, and with an eight-valve TSCC head used on the GSX400. The new GS750 was lauded for its handling at the time of its release, which was a significant improvement over its Japanese contemporaries, the older Honda CB750, the shaft-driven Yamaha XS750, and the more powerful but wayward handling Kawasaki 900. The GS750 engine was fitted into a dual cradle frame with telescopic forks, twin rear shocks and a front disc brake. The GS750 engine was essentially patterned off the Kawasaki Z1-900, and became the design basis for all air-cooled Suzuki four-stroke fours until the release of the air-oil cooled GSX-R.

#Yamaha Motorcycle Engine Serial Number Decoder series

If the first letter of your VIN is J it means your Motorcycle was made in Japan, if the first number is 1 or 4 in means your motorcycle was made in the USA.The first of the GS Series was the four-cylinder GS750 released alongside the GS400 parallel twin in November 1976. The final numbers form a unique serial number for an individual bike. There is a checksum character to ensure the first are correct. The first nine characters of a Yamaha Motorcycle VIN are dependent on the model of the Motorcycle. If your Yamaha is pre 1981 it will have a 9-digit VIN, as of yet we have been unable to find a 9 digit VIN decoder.Дecode your Yamaha VIN by entering the number below: All modern Yamaha Motorcycle VIN are a standard 17 characters long. Try turning the handlebars all the way to the left or right, this should make the VIN plate more visible. It may not be immediately apparent as first glance. On most Yamaha Motorcycles the VIN is on a plate on the head stem of the motorcycle.