Temperature and humidity combine as factors. With 100% humidity you can have icing at 60 degrees.
I’ve been reading the single carb builds as people share them. I haven’t done one, so I can’t say, but I think there are a lot of factors and many variables. I have noticed one thing stood out as seeming to give a higher chance at success, it’s the ones who’ve used a larger plenum (vw type 4 I think) and although it is made for a 2bbl, they add a two-into-one adapter between the carb and vw plenum.
There is one guy who also successfully put on a four barrel sticking up thru the false tank with a roots blower looking scoop on it.
To me, what stands out on those as opposed to the log style is the fuel has a decent drop down before going to each cylinder. I don’t know if that’s a factor in their success or not, just an observation.
Another one that stands out as really different is using just one inch ID pipes for the runners. I have watched videos of it and it sure seems to scoot. Big runners may help at wot, but who rides at wot?
Whatever I suggest here should be given ample time for a moderator to delicately correct. I apologize in advance.
77 WING, 1200 engine with 77 heads, cams, gl1100 foot pegs, Magna V65 front end, 764A carbs, [-gone Suzuki M109 monoshock--, replaced with gl1100 shocks] gl 1200 swing arm, gl1500 final drive, wheel and rear brakes Valkyrie seat, Meanstreak tank, Sportster pipes, Power Arc ignition off crank.
77 Wing. black
83 Wing, in pieces
"Continuing education is important even if the subject matter is fairly useless (as in this case)."---Greg Foresi