Vin Decoder For Title

I have a 1980 xj650 non yics. The side neck shorty vin is 4H7-104221 same on the engine side stamp. I need help with the vin decoding. I can fix just about anything but math is not so strong.

From what I have read it should be something like JYA4H700?104221 right?

 

You're in luck, no math required here!

 

I need to figure out the check digit tho.

 

The shorty vin to full vin conversion includes the check digit!

 

TheCrazyGnat is owed a big favor from the Yamaha XJ world................praise be to him!

 

You did the hard part, I just stand on the shoulders of greatness! I'm glad to give a little back to the great community here that has provided me with so much help.

 

I may be remembering wrong, but in 1980 the short VIN was still the only VIN issued; long VIN didn't go into effect until '82.

 

According to Chacal's notes on the matter:
Before we get down to deciphering a VIN number, let's take a brief step back in time, and recognize that prior to 1981, there was no real set standard for how VIN numbers had to be assigned.....in other words, the VIN Numbers used (by any vehicle manufacturer) prior to 1981 was more-or-less an internal-use number, and could be conjured up in whatever way struck a manufacturer's fancy and served their internal needs.

Starting in the late 1970's, with the proliferation of manufacturers, vehicle production volumes, and international sales, a solution to the "VIN dilemma" was suggested by the International Standards Organization (outlined in ISO Standard #3779, for the ultra-curious), and this standard was adopted and required to be used by all manufacturers that sold vehicles into the USA by the National Highway Traffic Saftey Administration (NHTSA) as of 1981. This is when the familiar, still-used-today 17-position VIN number came into use, and similar structured VIN formats were also adopted by Canada, the European countries, and many other countries around the world.

Prior to 1981, manufacturers could use a VIN number length of their choice, and Yamaha was no exception in this regard. In fact, because of the difficulty encountered with implementing this required 1981 changeover, Yamaha (and some other manufacturers) were granted a 9-month "stay of execution" for their 1981 model-year offerings, where they could still use their older (shorter) version VIN numbers to identify their products.

Thus 1980, 1981, and perhaps even some very early production 1982 model-year bikes use a shorter VIN number that appears on the frame of the bike (more about this later), and may also include a printed paper decal that lists a different (longer) VIN number that is the "extended", 17-posiiton version of the original, shorter VIN number.

Although for the purposes of absolutely, positively identifying your bike for exactly what it "is", the differences between the shorty VIN and the longer VIN are minor---although since the full 17-position VIN number contains more information, it makes the deciphering process a bit less time-consuming, but rest assured that----armed with the proper information---even a "shorty VIN" can be just as accurately and fully de-coded.

So, yes, it is very possible that the shorty vin on the frame is the correct one for the purposes of the title. However, it can still be converted to a full 17 digit one and, along with the information we have on the serial number ranges, we can glean the manufacture and model year; in this case 1981. Unfortunately,I can't speak to whether or not the shorty vin would be, for titling purposes, the one that should be used. He should probably speak to his department of transportation for that information.