Originally Posted by wantboost
so did someone change the carb on me? How do i know the LSN is at flush on mine?
No one changed the carb on you.. Like I said before OFNA uses generic pics for their paper work.. 2 needle carbs are much easier to tune anyway.
How do you know it is at flush?? You back it out until it is flush with the linkage attachment. Linkage attachment is where you connect the servo to the carb.. You will need to back out the HSN too, which is where the fuel line attachs..
Once you get both backed out.. Set your idle gap to around 1mm (About the thickness of a credit card). Lean the bottom end out until the engine continues to idle with out dieing.. The idle will be low, but that is okay.. Now throw it on the track and run it around some, 4-5 laps at least.. Top end should be none existent.. Once you get 4-5 laps in bring it in and lean the top 1 hour.. Think of the hour hand on a clock, and how far it moves from 12-1 or 1-2, etc.. Then take another lap. Bring in and lean 1 more hour, and repeat this until the engine shows no lag in performance, ie revs nicelt from bottom to the top, and seems to run out of speed at teh end fo the straight. When you reach that point, richen the HSN 1 hour, and reset your Idle like I explained before.. 1mm gap, should not have moved, but the idle may be a bit high now rich to lower..
If there is anybody at the track, ask them for some help, and ask questions.. Good Luck..
PS: if you are doing trying to tune in the street, your engine will most likeley end up tuned very lean.. So, set a distance that you will use for your "Straight Away", and do not try to lean your engine to continue revving for half a city block.. I would say 100ft or 30meters would be about the max distance you want to go.. Keep adjustments small, and only one needle at a time.. Keep fuel tank around half full for best over all tune.