Whats this Number about?

Recently I purchased a couple of 1980 XJ650's (in pieces of course) and both need restoring.
However, on one of the bikes, the engine number and compliance plate number are the same BUT the frame has the number N88 4912 P stamped where the frame number should be.

PPSR search has revealed no information and NEVDIS says it cant find any information.

I saw in this forum that it could be a NSW Police stolen/recovered indentifying number, but alas, at this time, they have no information either.

Any ideas?

 

somewhere on this Forum their used to be a full post on identifying frame and engine numbers , try a search i think it was a sticky so shouldnt be to hard to find.
if i come across it ill post another reply. welcome to the site, if youve got 2 bikes in bits you will find the information hear helpful at least you can build one and have a few spares

 

TECH TOPIC: Model ID and VIN's
search for this and hope fully this will help, it was written up by the supporting vendor Chacal. you might want to check out some of his other topics as sure it will help.

 

Thanks for your reply,
As yet I have been unable to find out why a 07/80 XJ650 with engine number 4K1 000776 and compliance plate number 4K1 000776 is different to stamped frame number N88 4912 P
I'll attach a couple of pics and maybe it can jog someones memory.
thanks in advance!
Lee

 

My profile pic is a 1983 XJ900RK with needs some TLC also.

 

That is an odd stamping, doesn't even look factory (not in a straight line). Do you have any history on the bike (previous owners, registrations,e tc.)?

 

as long as the plate is there it should not be an issue
maybe it was a replacment frame could that be a title number?

VIN INFO:
Your Full VIN Numer is JYA4K1001BA000776
World Manufacturer Identifier:
J = Japan, Y=Yamaha, A= Motorcycle

Vehicle Characteristic
4K100 = 1981 XJ650H Oceania

Check Digit:
1

Model Year:

B = 1981

Assembly Plant:

A = Iwata City Production Facility

Serial Number:

000776 is the Serial Number.

 

Thanks for the help guys,
as yet no joy with finding out more about the odd number and as there was no paperwork with the bikes, that makes it harder to track.
anyway, will sus it more keep you informed.
Maybe the UK style number plate holder could give me a clue.
When i punch in 4K1 000776 the net tells me its a XJ650 G model!
cheers all!