engine # ID???

I have to find out what year my engine is.
KHI-KZ750EE118134 can anyone help?

I checked on Zedder.com, but the engine numbers for KZ750 don't go as high as yours.
Don't know what that means, maybe your engine was manufactured as a replacement, and wasn't installed on a bike at the factory.
Best I could do.
Here's the link for Zedder:

zedder.com/msg1.htm

I just checked a GPz750 motor, I think it's a 83-84, and the number is KZ750EE171016, so I'm guessing 82-83 for yours, based on the number.

i was gonna guess 81;)

trippivot:

I have a late production 1982 (March 1982) and it is KZ750EE081XXX...so between steell and this info, I'm guessing 1983/4