[pic heavy update]
So, my bike is finally running, and running pretty well at that! I took it home from work on Sunday and rode it 15 miles back to my place. It stalled once half an hour into the trip at idle but started right back up without any issues.
As for the fixes…got the diaphragms from JBM and they fit perfectly. The site is a little crazy as far as measuring goes. I checked mine and it didn't match what they were saying for the BS34's but I figured, fuck it, it's gotta be right (I also didn't have calipers, just a crappy ruler.) It ended up being spot on, thankfully. I had to crack off the old plastic clips with wire dykes in order to put the new ones on. All you have to do is follow their directions for matching up the holes in the slides to the engine side.
It took me 3 tries to get the correct main jets for these bad boys. The second go round I got the air jets instead of mains…ended up buying the 137.5 mains from MikesXS as well as 2 little kits with needle jets, o rings, springs, washer and blind plugs.
Getting the bike started up wasn't too tricky but I was pretty hungover working on it and initially forgot to connect the vacuum line from the tank to the right side carb
I ended up realizing it that night and came back to it with a fresh head the next day. I had a little trouble getting it to kick over and ended up putting it to prime several times while cranking and then it finally went (there was some air in the gas line from not connecting the vacuum line initially.)
For the carbs, I bench synced them before putting them on and set the idle mix screws at 3 turns out. Once I got the bike started the idle was way too high, so I adjusted the idle stop knob and cut the mix screw to 2 turns out….it took about 3 or 4 tries to get this all right, pulling the tank each time. Also oiled the UNI filters! @xchris
Once the bike was idling successfully and throttling up with no hesitation, I rode it around my work's parking lot for about 30 minutes with no issues. Once I did stop, I realized I had a decent oil leak coming from the bottom of the alternator cover.
I'll admit it, I got lazy when I swapped in the new starter motor and re-used the old gasket. The bottom allen bolt had punctured through the gasket and I probably lost 1/2 a quart from it sitting overnight. Luckily, I had a new gasket and slapped it on the following day and voila, oil leak fixed
I've had the bike out twice since I've got it running good and the only hang up I've noticed is that the idle won't drop right away when I really go hard (rev out) on it for a while. For instance, I'm in the city so I won't start out in first, just do a rolling stop in second and rev up to 5 or 6K to the next light or stop sign (block to block.) It will drop down if I let it sit for a minute but I'm not too concerned overall. I'll probably lube up the throttle cable, in case that what's hanging up.
I'll put some videos of her running in the next post