I’m a bit stumped on how to make the final jet changes on my 38DGAS carbs.
Here is the data: yellow indicates poor running condition
One set of jets is perfect, except for a very VERY narrow lean spot. Zero hesitation or traditional bog as you open the throttle. But if you very slowly open the throttle there is a super narrow lean spot just about flat ground cruise (eg a very slight rise in the road). See the yellow cells in the table. Best lean idle is 1.5 turns off the seat.
One step richer main jet and 1 leaner idle results in over rich under all but very light throttle but no lean spot. Best lean idle is 1.75 turns odd the seat.
I’m hoping richer idle jets (55 or 60) and the 145 mains will fix it. The 55 idles are one turn out. A 60 idle will likely be close to only 1/2 turn out for best idle. Sound right to you?
Here is the data: yellow indicates poor running condition
One set of jets is perfect, except for a very VERY narrow lean spot. Zero hesitation or traditional bog as you open the throttle. But if you very slowly open the throttle there is a super narrow lean spot just about flat ground cruise (eg a very slight rise in the road). See the yellow cells in the table. Best lean idle is 1.5 turns off the seat.
One step richer main jet and 1 leaner idle results in over rich under all but very light throttle but no lean spot. Best lean idle is 1.75 turns odd the seat.
I’m hoping richer idle jets (55 or 60) and the 145 mains will fix it. The 55 idles are one turn out. A 60 idle will likely be close to only 1/2 turn out for best idle. Sound right to you?