Topic: Original CB750KO seen in Nagoya, Japan

[Ted Nomura]

Technicaly I dont think there WAS a K0. I think the designation was created to differentiate between the 69 and 70 models.

I agree. Even the dealer fiche designates it as K0, but that might be to differentiate it from the other models re: parts. Otherwise, the conversation might go something like;

Owner - "I'm looking for a widget for a CB750."
Dealer - "OK, which one?"
Owner - "I just told you, a CB750."  

Actually the American Honda fiche is incorrect. They never bothered to fix it because none of the real CB750K0s believed to have made it to America. Accurate serial numbers are listed in Mr. John Wyatt's Original CB750 book. I don't have it on hand because I'm tying this from a local library.

[Bob Wessner]

Actually the American Honda fiche is incorrect. They never bothered to fix it

Sorry to hear it was what amounts to a clerical error, thought Honda actually had a reason for ID'ing the fiche that way.

[Ted Nomura]

I'm sure Big Ben will be along soon with his comments.

You rang?

No worries, twostrokecrazy. Stinger is proud of his wife's beauty (and of her bike) and doesn't mind others noticing it.
But Yuka's is a K1 made up to look like a K0, or, I suppose, a "CB750". Maybe K0 is an American designation, but everyone in Japan uses it to describe the sandcast CB750 preceding the K1. Even if "k0" isn't official, if everyone knows what it means, I'll probably keep using it.

This is my buddy N's K0CB750:

The true CB750K0s have serial numbers CB750 1044826-1044947 for the frame and CB750E 1044848-1045147 for the engine. Any CB750s before that is a 1969 or 1970 CB750, any after that with numbers starting with "1" is a CB750K1 model. American Honda misidentifies early CB750s as CB750K0s, which is incorrect. Honda was planning to designate the original CB750K0s, which has CB750K1 carburators, as CB750 Kai (meaning "improvement") or just CB750K but since they were already releasing the CB750K1 model, they let the 121 CB750Kais labeled as CB750K0s, which is in original Honda records.