racin69z Posted January 26, 2025 Report Posted January 26, 2025 I am having trouble on my pilot jetting. I seem to be running way larger than people with similar builds, and I can't figure out why. It's a stock stroke, 64.5 bore, diy aggressive play/trail/dune port (192-127 timing, slightly wider transfers and exhaust, opened intake windows a bit), v force 4 reeds, fmf fattys power core silencers, cool head with .020 domes, .038 squish(tighter than I hoped but that's where it landed) stock carbs, k&n pod filters. Float level is 21mm from gasket surface to the bottom of float with the carb upside down. Right now I'm at 320 main 45 pilot it idles best with this 45 pilot with the air screw all the way closed which seems to me it's too small which makes no sense. The air jet is a 1.6 which i assume is stock. Going to go up on the main as it's a little lean. Thinking I either need to go down on air jet or up more on pilot which seems crazy. Any thoughts? Quote
racin69z Posted January 26, 2025 Author Report Posted January 26, 2025 I've got the carbs off and I'm checking them out. All the fuel and air passages are open and flow carb cleaner. I found a hole that goes straight in to the vacuum side of the carb. I'm sure that would be a large air leak and would explain the stupid large jet. I'm a bit new to banshees and this bike was a box of parts when I got it. Going to do a web search on it. Here is a pic of the hole with my finger touching it. Quote
racin69z Posted January 26, 2025 Author Report Posted January 26, 2025 Well that was it. Tapped those holes cleaned out the trash and put bolts in there. Idles like a champ with a 32.5. I couldn't find any 30a or I would have tried those. I have no idea what that was supposed to be hooked up to. Partszilla shows a hose that looks to be 340mm long going somewhere. Going to look in my service manual. The entire last year I fought this idle. I never could get it to idle stable at low rpm. Now it will. Quote
Jereme6655 Posted January 27, 2025 Report Posted January 27, 2025 Choke tube. There should be a tube running between the two carbs as one carb only truly has a choke circuit. 1 Quote
racin69z Posted January 27, 2025 Author Report Posted January 27, 2025 I'll be damn thanks a lot Quote
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