samatulich
SILVER Star
I am currently in the process of rebuilding two 2F Aisan Carburetors. One was stamped 5J27 (1975 October 27) and the other 6B3 (1976 February 3). The one built in October 1975 was the original carb for the 2F in the 1976 FJ40, never been rebuilt. The second one (February 1976) I purchased a few years ago. I was told that it had been rebuilt and desmogged.
Both carburetors were used on my 1976 FJ40. The original one ran until I had it replaced with the 6B3. At that point in time I had a dizzy, coil and ingnitor from a mid '80s 2F installed. The set up worked for a little over a month, then I could not get it to start and run. That was 2 years ago, I decided this past week to remove the carb and rebuild both of them at the same time.
They are both apart, soaking in carb dip or drying out.
Here are the specs from each carb with respect to the jets and Venturi:
Carb 5J27: Primary side: main jet (144); slow jet (65); Venturi (5*). Secondary side: main jet (230); slow jet (90); Venturi (3)
Carb 6B3: Primary side: main jet (103); slow jet (55); Venturi (1). Secondary side: main jet (230); slow jet (70); Venturi (5).
*this Venturi has been damaged due to a backfire, it is missing 1/3 of the ring(s) surrounding it. I would post a pic, but I am having trouble figuring that out right now.
Here are my questions:
1) Are these both considered to be 1976 2F carburetors?
2) Are the jets (main and slow) and venturies interchangeable? I am not sure if I could use the primary Venturi from my February carb with the jets from the October carb.
3) How should I consider rebuilding the carbs? Keep them the way they were, mix and match jets with venturies or purchase new jets (Mikuni) and drill them out to a specific size.
I have been searching the forums and read that for a 1976 Aisan carb a main jet sized 150 is perfect. When I get this '40 back on the road, I would like it to be desmogged and driven from sea level (I live in Olympia WA) up to 8,000' (looking to drive it up in the Sierras around the Sierra Buttes).
I will continue to use the search function and read up on this topic, so far it has been helpful and informative.
Lastly, thanks Pin Head for your videos, very easy to follow and really has helped me understand more about this carbs.
Thanks for your help.
Sam
Both carburetors were used on my 1976 FJ40. The original one ran until I had it replaced with the 6B3. At that point in time I had a dizzy, coil and ingnitor from a mid '80s 2F installed. The set up worked for a little over a month, then I could not get it to start and run. That was 2 years ago, I decided this past week to remove the carb and rebuild both of them at the same time.
They are both apart, soaking in carb dip or drying out.
Here are the specs from each carb with respect to the jets and Venturi:
Carb 5J27: Primary side: main jet (144); slow jet (65); Venturi (5*). Secondary side: main jet (230); slow jet (90); Venturi (3)
Carb 6B3: Primary side: main jet (103); slow jet (55); Venturi (1). Secondary side: main jet (230); slow jet (70); Venturi (5).
*this Venturi has been damaged due to a backfire, it is missing 1/3 of the ring(s) surrounding it. I would post a pic, but I am having trouble figuring that out right now.
Here are my questions:
1) Are these both considered to be 1976 2F carburetors?
2) Are the jets (main and slow) and venturies interchangeable? I am not sure if I could use the primary Venturi from my February carb with the jets from the October carb.
3) How should I consider rebuilding the carbs? Keep them the way they were, mix and match jets with venturies or purchase new jets (Mikuni) and drill them out to a specific size.
I have been searching the forums and read that for a 1976 Aisan carb a main jet sized 150 is perfect. When I get this '40 back on the road, I would like it to be desmogged and driven from sea level (I live in Olympia WA) up to 8,000' (looking to drive it up in the Sierras around the Sierra Buttes).
I will continue to use the search function and read up on this topic, so far it has been helpful and informative.
Lastly, thanks Pin Head for your videos, very easy to follow and really has helped me understand more about this carbs.
Thanks for your help.
Sam