yamama stamp on the engine

[courtsdaddy]

Pat,

The guy I bought my parts bike from had several different years of the 1200 motor.  Some of the motors didn't have a stamp and the rest did!  He asked me if I knew why? So what better place than here to ask that!  Didn't think anything like a different motor or anything like that, but I can tell you that if from 86 to the end of the production some have it and some do not there is a reason.

If you look in the member pics here on this site you will see several of the motors do not have anything other than the number.  ? Just had me curious.

Also I was trying to help him it out with this because going forward he will contact me or this site to sell the parts to us instead of the junk yard.

[Travis398]

Can anyone tell me why some of the Fj1200 motors have a stamp next to the VIN and some do not?

I know I know I know
The 1100's didn't get the tuning forks, the 1200's did. 

[weymouth399]

Where did you get your info from? 
Do you know Someone who's in the know? 
Who could have such knowledge?
Are you sure?
boy

[Travis398]

well actually I did ask someone, but he wasn't in the know.

in fact he had no clue about the stamp.

but after looking at my motors and a few of his, it was the logical assumption.

and no I may not be 100 percent sure but it does seem to be the pattern.