Honda brought out the DOHC in 1979, the 10th anniversary year of the CB750. There really weren't many changes made in 1979 (DOHC and CDI ignition -- nice, but not earth-shattering), which was commented on by reviewers, then, and since. I think Honda was focusing more on their Gold Wing line at that time, since they discovered people had a desire for dedicated, purpose-built bikes, around 1980 and forwards.
If you are interested in some fun reading, check your local library for books on the history of the various Japanese motorcycle manufacturers. There are books on Honda, Kawasaki, and Yamaha, that I have found. They're fun to skip around through (tons of photo's of sooo many bikes... nearly all in pristine/new condition --
be still, my thumping heart!). I learned a lot about Mr. Honda, and the whole motorcycle market in the 1950's to the 1980's. They were interesting times in the motorcycle world.
I've been impressed with the bikes produced by all three of the major Japanese makers, back in the 70's and 80's, and forwards. I really enjoyed seeing the technology progress through the decades, especially seeing how some companies were years ahead of their time. Some of their products made a huge splash in the sport/hobby, some died quietly, only to be resurrected years later (take a look at Kawasaki's 1300 Voyager, back in 1979, and forward -- had
digital systems in the early 80's!). I believe Kawasaki had an electronic cruise control (Voyager XII, circa 1987?) before Honda had one on their Gold Wing line (1989 or 1990?). Makes the long Winter nights pass more easily... Cheers!
1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII
Locked
The 78 was a SOHC.
