r/cb750

Hello everyone, I have an 80 CB750C Custom with a little over 5,000 on it, it’s my first bike project, with that being said I’ve run into a snag with what I think is the carbs but I’m not 100% sure at this point. As for preliminary tests, I have checked for good solid spark from each coil to plug, did a dirty test for compression as I don’t have a proper compression gauge to fit the engine yet, fresh carb rebuild with a K&L kit for each carb (the jets were the only replacement brass since there was prior damage to the old ones unfortunately) and I just polished the float valve seats and bores, and also before and after tried to replace float needles and floats, all of which made very minimal if any difference in it’s behavior, between test fires I make sure the plugs are clean. Beyond all that I’m getting an intermittent exhaust backfire and it doesn’t even sputter or try to start up otherwise. Any help would be greatly appreciated.

I have a 1980 Honda CB750K. Was wondering if anyone has tried to 3D print the stator cover, clutch cover, etc. I did some research and it seems like it can be done with the right materials.