becoming a carb expert

[mercury65]

well not realy but i do want to be realy good with them. my bike is done 4 now however im still reading and still learning i have now learnd that the pilot system in the keihin carbs is bigger then the stock carbs, and the main jet does flow at idel. if it dident the motor would fall on its face every time you came of idel or gave it gas, unless u had a accel pump, the stock carbs flow more through the main at idel then the keihin's. witch is why most do the pilot last on a stock carbs, the pilot system on stock carbs is a very small, that why i never had to change them. when you trun the idel screw up the slide goes up. the pilot is just a way to make air/fuel at idel more simple and acurate, a bike could run without a pilot system but it would make the needle way to complex.

 

stock carbs idel off the main with the pilot for fine tuning the idel and off idel.

keihin carbs idel off the pilot.

not exact but its a easy way to under stand the main diff in the two. and yes the stock carbs do idel off the pilot im not saying they dont

 

so if i have got it wrong some one please let me know THANKS