Carter BBS Choke pull-off?

-
J

Jobbob

Active Member
Joined
Mar 3, 2021
Messages
30
Reaction score
27
Location
Senoia, GA
I just took delivery of a Carter BBS rebuild from Autoline. Instead of the dashpot choke pull-off it has an integral piston pull-off. Everything else is identical to all other BBS carbs except the body upper and lower pieces. I can’t find anything on the internet even acknowledging this design. Anybody out there familiar with this design?

F70ED967-FBB7-454C-84DF-BADBBB83F84B.jpeg


BFEBDC22-F94C-4047-BAF2-B62838E194DF.jpeg


386286C8-291B-46AB-8C89-1A38AC0960A3.jpeg
 
What's the main concern?
 
That's the '60-'63 setup; the external vacuum diaphragm arrived for '64 (across all Chrysler Corp carburetors, no matter whether made by Carter, Holley, or Bendix). The external diaphragm was adopted because the dirty gasoline at that time tended to gum up the previous pull-off piston, but today's gasoline isn't going to do that anywhere near as much or as fast; just give a Pssht of carburetor cleaner through the slot where the pull-off piston link goes into the carb wall (with the engine running) every once in awhile and you'll be fine. Use 1963 instructions for how to adjust the choke pull-off, if needed. Carburetor operation and repair manuals and links to training movies and carb repair/modification threads are posted here for free download.
 
slantsixdan said:
That's the '60-'63 setup; the external vacuum diaphragm arrived for '64 (across all Chrysler Corp carburetors, no matter whether made by Carter, Holley, or Bendix). The external diaphragm was adopted because the dirty gasoline at that time tended to gum up the previous pull-off piston, but today's gasoline isn't going to do that anywhere near as much or as fast; just give a Pssht of carburetor cleaner through the slot where the pull-off piston link goes into the carb wall (with the engine running) every once in awhile and you'll be fine. Use 1963 instructions for how to adjust the choke pull-off, if needed. Carburetor operation and repair manuals and links to training movies and carb repair/modification threads are posted here for free download.
Click to expand...
Thanks for the info. I was puzzled because I didn’t find anything on the internet. No pictures, no drawings, nothing.
 
Might be preferable if the pull-off piston uses an easily sourced seal like an O-ring. The external diaphragm pull-offs often fail, so have to replace the whole part, which may become "not avail" in the future. They often fail after some gomer keeps spraying them with carburetor-cleaner.
 
You must log in or register to reply here.
-

Back
Top