Most "how I got my bike" stories are pretty formulaic for me. Find a bike, look at it, point out every thing that is wrong, offer less, meet in the middle.
However, there are some exceptions, this one is my favorite. I apologize that it's not SOHC related, but it is a Honda.
Back in high-school, when I was 15, our auto-shop had a handful of motorcycles sitting outside in a yard-area. These included 5-7 CB125s from the 90's(donated by a riding school), a 1975 XL250 which had been fairly parted out, and a 1977 XL350.
It was the last week of school for the year, my auto-shop teacher had mentally checked out, and the students were left to roam the shop freely. That's when I decided to wade through the sea of broken lawnmowers and dig out the XL350. It looked like it hadn't been touched in 5+ years. After getting it into the shop I started assaulting the poor old bike with starting fluid to see if it would cough. After 100 kicks or so it was showing some signs of life on starting fluid. It would give me the occasional back-fire, and the motor would catch for a second or two. With that rush of adrenaline and hope I decided it was a good idea to tear into the carb. Up until this point in my life the most complicated carburetor I had ever touched was from a lawn mower. I knew the theory of cleaning a carb, but not much more than that. I sprayed the #$%* out of every hole I could find on that big ole PD carb. Got it back on the bike, kicked it with all I had, still no dice.
It was after this first day I had a hair-brained scheme. I asked my auto-shop teacher the Monday of that last week of school: "If I can get this bike running, can I have it?". After a hardy chuckle, he said in a doubtful tone "Sure, if you can get that bike running by the end of the week, you can have it". I was ecstatic, this bike was the only thing I could think about. I skipped class to come in and fiddle with the bike more. My right leg was so sore by the end of the day I had a limp. I couldn't sleep at night, the chase of getting that bike to run had consumed me. What I lacked in knowledge, I made up for in sheer determination. I must have kicked that bike over at least 2,000 times that week, when my leg was too tired I recruited classmates to help me bump start it. Spraying starting fluid, turning screws on the carb, asking around for any information on what could be wrong.
Friday rolled around and the bike was still just coughing on starting fluid. I decided it was time to dig into the carb again, maybe I had missed something. I wrestled the carb out of the rubber boots once more, after opening up the bowl something immediately didn't look right. I had put the float back in upside down! A rush of optimism coursed though me. I had just a few hours until the year was over and I was going to give it my all. I got the carb back on, turned on the fuel tap, and started kicking feverishly. More coughs, this time without starting fluid, It started to catch, different throttle position, running for longer and longer each attempt. The bike finally fired to life and kept running; the smoke show was phenomenal. I didn't even bother to put the seat back on, I hopped on the bike and dropped it into first with a clunk. Took off and cruised around the driving range with the biggest, stupidest smile on my face. The bike wouldn't rev up past 4k rpm, and my ass hurt sitting on the frame rails, but I didn't care, I was on top of the world.
I anxiously awaited for my auto-shop teacher to return from lunch, I was worried the bike wouldn't stay running long enough for him to see it. But alas, it did, he pulled up, I emphatically showed him, he gave me a big grin and congratulated me. I asked if it had a title: it didn't. Any paperwork? : No.
School was over, I rode the bike home 4,000rpm at a time. Thankfully I didn't get pulled over, as I was 15, on a bike that hadn't be registered in 30 years, without any paperwork.
Some interesting points in retrospect:
-I had never cleaned out the tank, it was impressive I got it to run on whatever varnish was in there, mixed of course with whatever gas was laying around the shop.
-Later I figure out the rpm issue was due to the ignition timing being extremely re-tarted. I'm talking 15 degrees possibly more. I didn't have a clue what points or ignition timing was back then.
-Lucky for me this was a 77' model with the A/C ignition system. Had it been 76' or earlier that required a battery, I would have been screwed!
I still have the bike to this day, It's a bit worse for wear, but I'm sure it still fire right up if I gave it some gas. Ultimately I'd like to so some sort of engine swap on it, as the 350 single is an vibey mess of an engine imo. I must have learned 50% of all my mechanical knowledge on that bike, I will always be grateful to my shop teacher for that.