3/24/2024 0 Comments 2 stroke tuning chartOnce you reach WOT, the amount of gas is completely controlled by the main jet. The needle is tapered so when the it is 1/4 to 3/4 of the way out, the angle of taper is what determines how much gas can escape through your main jet. “Lowering the needle” by “raising” the clip up one position makes the the gas flow leaner in the low to mid throttle range. If you are having issues at 1/3 throttle, the best thing you can do is to adjust the needle setting. On a PHBG carb, the main jet starts functionality about 1/3 of the way through but doesn't become truly effective until 1/2 throttle. A la Harold from the performance forum ( Re: tuning a dellorto phbg 21mm racing type - Date Posted: 02-05-08 14:17).Finally, make sure to start with a fresh spark plug when tuning. PHBG's always seem to come level, but its good to check. A properly set float will be parallel to the base of the carb body when it is held upside down w/o the float bowl on. A high float level will cause it to run rich and a low level cause it to run lean. If the gasoline level is set too high or too low, properly jetting your bike will be impossible. Second, you need to insure the float level is properly set. Here are some resources for those of us new to the world of PHBG Tunings.įirst, you need to install a clean air filter. See also: PHBG tuning made easy (a step by step guide) First Things First 6.2 Little Nozzles and Black Rubber Caps.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |