I have a deluxe bullet avl with about 700 miles on it. I just installed a classic pipe and silencer and K&N cone shaped air filter. I decided to try jetting the stock CV carb. After trying every combination of jets that I had, and needle settings I finally found one that seems like a good compromise.
The factory needle setting (middle notch) was hands down winner. For main jet I ended up with the biggest one that I had, which was a 125 (factory is 110). With the main at 125 and the pilot at factory (15), idle was great, acceleration was OK, full throttle was great, but plug was white with ash and new pipe was turning blue. I stepped up to 17.5 pilot and idle is OK with adjustment screw turned as lean as possible, initial acceleration has a tiny hesitation at first then very quickly smooths out, wide open is as much power as I'd want and it seems to want to get up to 70 and stay there. There is gurgling and popping on rapid deceleration - which I like the sound of as long as I'm not doing any damage to engine. Plug is chocolate brown color, relatively dry.
It seems like it's a little too rich at the bottom, good in the middle, and outstanding at the top. Since there are no changable slides for this carb, I'm guessing that this is as good as I'll get it ?? I love the sound now - it really has a resonant, thumpy, growl with some nice deceleration crackling, gurgling, and popping thrown in. I guess I'll stick with this combo for a while, unless anybody has some good tuning ideas, and maybe consider a trad brit carb down the road. I'm assuming that the gurgling and popping in the pipe is gas that didn't burn in the engine? Am I throwing out an unacceptable carbon footprint or doing the engine any harm
Does changing intake and exhaust effect ignition timing? If so, how would you adjust timing on solid state ignition? Thanks for all the tips and enthusiasm, I'm a very happy RE owner/rider at the moment!!
Mike;D?