I understand that every bike has different requirements for carb jetting, but I feel this is super weird. Let me know your thoughts.
I just finished a build and now I'm trying to get the carbs in line. I changed to UNI air filters and a 4 into 1 exhaust. I expected a significant increase in air flow, but my pilot jet seems to like it the best at the stock 35 jet 1 1/2 turns out. When reaching around 4000 rpms it bogs down. I heard major exhaust popping, but NOT on decel. I currently have a 140 main jet. I've gone up to a 160. I thought for sure it was lean, but it seems like even with the mods, it might want a 118-120 main jet. Does this seem too lean considering the mods?
I've been battling a high idle hang, that seems to get worse the richer the mixture. Even though I'm running 35 pilot jet. I've checked for vacuum leaks a million times, rebuilt carbs to the T including the felt throttle shaft seals, new intake boots, completely tight, etc. Float height tested 10 times. Carbs have been vacuum synced three times. Throttle cables smooth as silk. No binding. When the pilot jet is at 1 1/2 turns out im able to stop the high idle by pushing the throttle closed, but when releasing the throttle you can tell the throttle shaft is returning perfectly back to the idle speed adjustment screw. When I make the pilot circuit richer (thinking its a lean high idle), it gets worse, and I'm not able to stop the high idle.
Almost seems like she wants to be at completely stock settings. Could this be the case. I find it weird considering the mods.
*straight from k8 supplement of shop manual
I just finished a build and now I'm trying to get the carbs in line. I changed to UNI air filters and a 4 into 1 exhaust. I expected a significant increase in air flow, but my pilot jet seems to like it the best at the stock 35 jet 1 1/2 turns out. When reaching around 4000 rpms it bogs down. I heard major exhaust popping, but NOT on decel. I currently have a 140 main jet. I've gone up to a 160. I thought for sure it was lean, but it seems like even with the mods, it might want a 118-120 main jet. Does this seem too lean considering the mods?
I've been battling a high idle hang, that seems to get worse the richer the mixture. Even though I'm running 35 pilot jet. I've checked for vacuum leaks a million times, rebuilt carbs to the T including the felt throttle shaft seals, new intake boots, completely tight, etc. Float height tested 10 times. Carbs have been vacuum synced three times. Throttle cables smooth as silk. No binding. When the pilot jet is at 1 1/2 turns out im able to stop the high idle by pushing the throttle closed, but when releasing the throttle you can tell the throttle shaft is returning perfectly back to the idle speed adjustment screw. When I make the pilot circuit richer (thinking its a lean high idle), it gets worse, and I'm not able to stop the high idle.
Almost seems like she wants to be at completely stock settings. Could this be the case. I find it weird considering the mods.
*straight from k8 supplement of shop manual