EDITED: (to be a bit shorter)
I love the Honda CB750K so much, that I have come out of my "Never going to ride again" period to owning another. I used to love riding, until one night, a guy in Kobe, Japan tried to grind me into the Jersey barrier of the highway with my 7 year old daughter on the back. He pulled in front of me and slammed the brakes, came from behind and tried to ram me, etc. I couldn't outrace him because my kid was on the back, but he wouldn't piss-off so I used another car to block him until I could get the next exit. Who knows what the hell that guy's problem was, but it's a good bet that he was drunk. I tried riding a bit after that, but it wasn't any fun anymore. That was in 2011.
In 2014, we came back to the States. I discovered that a CB750 I'd rescued way back in 2001, was left a friend's garage the entire 12 years I was in Japan. It was running awesome and clean when I left, but he'd tore apart the carbs, and the front brake, and they were sitting in a bucket. The seat was chopped to about 1" of foam, and the tank looked like it had been bathed in acid. The engine was basically dead. (Carbs had been off for a decade, so who knows what got in there)
That just didn't sit well with me at all. There was a K6 sitting there in his garage too, which had also been sitting for years. It had clearly been dropped and was missing some parts. So I bought the pair of them just to get them out of there.
Sadly, the K7 engine was beyond my help. My mission was to get one of them running, so I put the K6 enging in the K7 frame...and the carbs...pipes and by the time I was done throwing out crusty rubber, bent chrome, and rust there were only ELEVEN pieces of the K7 left. Mostly all that remains is the frame/swing-arm and wire harness. The K6 filled in most of the blanks, the rest had to be bought new.
This is my 15th motorcycle actually, and my 8th CB750. CB750 is a very forgiving bike for novices with a bit of time and confidence. I'm not a mechanic. I don't work on engines, and I'm not particularly good at tuning. But somehow, it comes together in the end. I've never let a CB750 down yet.