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Carter AFB's #1561348 01/10/14 11:01 AM 01/10/14 11:01 AM
Joined: Dec 2007 Posts: 246 gainsville, usa J johnfin OP enthusiast
johnfin OP enthusiast J Joined: Dec 2007 Posts: 246 gainsville, usa	Do all Carter AFB's have the auxiliary airvalves? I have a bunch of AFB's and none of them seem to have that part.

Re: Carter AFB's [Re: johnfin] #1561349 01/10/14 11:27 AM 01/10/14 11:27 AM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Quote: Do all Carter AFB's have the auxiliary airvalves? I have a bunch of AFB's and none of them seem to have that part. Depends on the application.

Re: Carter AFB's [Re: johnfin] #1561350 01/10/14 03:51 PM 01/10/14 03:51 PM
Joined: Jan 2003 Posts: 15,304 Omaha Ne T TJP I Live Here
TJP I Live Here T Joined: Jan 2003 Posts: 15,304 Omaha Ne	Are you referring to the secondary air valve???? If so The AFB's used an internal counterweighted door above the secondary butterflies. it can be adjusted by adding or removing weight which is a PITA The AVS's used an adjustable air door on the air horn ( top of the carb). www.tandmautomotive-omaha.com

Re: Carter AFB's [Re: TJP] #1561351 01/10/14 04:36 PM 01/10/14 04:36 PM
Joined: Dec 2007 Posts: 246 gainsville, usa J johnfin OP enthusiast
johnfin OP enthusiast J Joined: Dec 2007 Posts: 246 gainsville, usa	I have a dozen of these carbs, AFB's, and none have the weighted valves above the secondaries. The secondaries are spring loaded, downdraft opens them on full throttle and forced closed by a lever when throttle is released.

Re: Carter AFB's [Re: johnfin] #1561352 01/10/14 05:02 PM 01/10/14 05:02 PM
Joined: Jan 2003 Posts: 25,747 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,747 Rio Linda, CA	Quote: The secondaries are spring loaded, downdraft opens them on full throttle and forced closed by a lever when throttle is released. Huh? The secondaries are opened mechanically by a link rod from the primaries, the only spring involved is the one in the primaries to prevent the secondaries from opening when the choke is closed. The use of the weighted air flapper in the secondaries is yes/no; some had it, some didn't. The INTERNET, the MISinformation superhighway

Re: Carter AFB's [Re: John_Kunkel] #1561353 01/10/14 06:03 PM 01/10/14 06:03 PM
Joined: Dec 2007 Posts: 246 gainsville, usa J johnfin OP enthusiast
johnfin OP enthusiast J Joined: Dec 2007 Posts: 246 gainsville, usa	The ones I have use a spring on the secondaries, its on the passenger side and its a light spring. I think its suppose to keep the secondaries closed when the primaries are a little open. I have to look at mine again but the other night I opened the primaries full and the secondaries did not open.

Re: Carter AFB's [Re: johnfin] #1561354 01/10/14 06:11 PM 01/10/14 06:11 PM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Quote: I have a dozen of these carbs, AFB's, and none have the weighted valves above the secondaries. The secondaries are spring loaded, downdraft opens them on full throttle and forced closed by a lever when throttle is released. If you have a dozen AFB's,can't imagine you have none with any of these. 7992711-P1100618.JPG (134 downloads)

Re: Carter AFB's [Re: 62maxwgn] #1561355 01/10/14 06:32 PM 01/10/14 06:32 PM
Joined: Sep 2010 Posts: 170 renton , washington P perfmachst member
perfmachst member P Joined: Sep 2010 Posts: 170 renton , washington	hi, the early AFB carbs didn't have weighted air valves above secondary bores. asfar as I remember, those were used up till 1966. the 235 /273 had weighted valves starting in 1965. the 383 had none. lot of it depended on engine combo. AFB came out in 1960 ?? so you have early AFB carbs.

Re: Carter AFB's [Re: perfmachst] #1561356 01/10/14 06:38 PM 01/10/14 06:38 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	The AFB in my 64 300 did not have the valve under discussion. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Carter AFB's [Re: perfmachst] #1561357 01/10/14 06:40 PM 01/10/14 06:40 PM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	Quote: hi, the early AFB carbs didn't have weighted air valves above secondary bores. asfar as I remember, those were used up till 1966. the 235 /273 had weighted valves starting in 1965. the 383 had none. lot of it depended on engine combo. AFB came out in 1960 ?? so you have early AFB carbs. Not so Pontiac, Ford and Mopar and other GM motors used Carter AFB, Aluminum Four Barrel starting in 1958, that had the weights on them Some of the smaller C.I. AFB carbs. did not have the weighted air valves under the rear secondary venturi boosters, but some did :shruggy :Most of the bigger C.I. motor carbs. had them stock The Carter Air Valve Secondary, AVS carbs, had the spring loaded door above the secondarys starting in 1968, maybe also the 1967 HP 440 motors, on the HP Mopar motors. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Carter AFB's [Re: johnfin] #1561358 01/10/14 07:09 PM 01/10/14 07:09 PM
Joined: Jan 2003 Posts: 25,747 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,747 Rio Linda, CA	Quote: The ones I have use a spring on the secondaries, its on the passenger side and its a light spring. I think its suppose to keep the secondaries closed when the primaries are a little open. Correct, but the secondaries are still opened mechanically but only after the primaries are open a ways. Quote: I have to look at mine again but the other night I opened the primaries full and the secondaries did not open. That's because the choke was closed; when the choke is closed the secondaries won't open. The INTERNET, the MISinformation superhighway

Re: Carter AFB's [Re: perfmachst] #1561359 01/11/14 01:43 AM 01/11/14 01:43 AM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Quote: hi, the early AFB carbs didn't have weighted air valves above secondary bores. asfar as I remember, those were used up till 1966. the 235 /273 had weighted valves starting in 1965. the 383 had none. lot of it depended on engine combo. AFB came out in 1960 ?? so you have early AFB carbs. As far as Chrysler,the weighted air valve started with the dual quad motors in the 58 Fury/D500/Adventurer and 300D and continued through all inline 2x4 systems including the Hemi and various single fours depending on application.

Re: Carter AFB's [Re: Cab_Burge] #1561360 01/11/14 05:03 AM 01/11/14 05:03 AM
Joined: Sep 2010 Posts: 170 renton , washington P perfmachst member
perfmachst member P Joined: Sep 2010 Posts: 170 renton , washington	hi, I wasn't quoting gospel or trying to misinform!!! as i said, as I remember . I wasn't privy to all cars back then!! sounds like your the expert , next time ,I won't make any comments!!

Re: Carter AFB's [Re: perfmachst] #1561361 01/11/14 05:25 AM 01/11/14 05:25 AM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	Quote: hi, I wasn't quoting gospel or trying to misinform!!! as i said, as I remember . I wasn't privy to all cars back then!! sounds like your the expert , next time ,I won't make any comments!! I'm not a expert in anything other than causing hate and discontent when I set my mind to that My post was offered to correct a internet myth before it got spread by those not in the know Bottom line, intent on your part is not the point, the results are Last edited by Cab_Burge; 01/11/14 05:34 AM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Carter AFB's [Re: Cab_Burge] #1561362 01/11/14 05:32 AM 01/11/14 05:32 AM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	My 1964 race hemi carb has it 7993416-Parts(99).jpg (205 downloads)

Re: Carter AFB's [Re: ademon] #1561363 01/11/14 05:37 AM 01/11/14 05:37 AM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	Quote: My 1964 race hemi carb has it If those are the OEM Carters they are some rare pieces I had heard that the first race hemi came with Carters but I've never seen any of those 1964 race motors with them Same thing on the NASCAR 410 HP Race hemi with the single four barrels Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Carter AFB's [Re: Cab_Burge] #1561364 01/11/14 10:09 AM 01/11/14 10:09 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Learn something every day on Moparts. All the AFB's I have worked on over the years had the weighted air valve and I thought all AFB's had it. Ron

Re: Carter AFB's [Re: Cab_Burge] #1561365 01/11/14 02:47 PM 01/11/14 02:47 PM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	Quote: Quote: My 1964 race hemi carb has it If those are the OEM Carters they are some rare pieces I had heard that the first race hemi came with Carters but I've never seen any of those 1964 race motors with them Same thing on the NASCAR 410 HP Race hemi with the single four barrels yes it's a 3861 AFB it doesn't have the numbers stamped on it which I've been told means it was on one of the 70 cars that left the factory. Only have the one

Re: Carter AFB's [Re: 383man] #1561366 01/11/14 03:51 PM 01/11/14 03:51 PM
Joined: Jan 2003 Posts: 15,304 Omaha Ne T TJP I Live Here
TJP I Live Here T Joined: Jan 2003 Posts: 15,304 Omaha Ne	Quote: Learn something every day on Moparts. All the AFB's I have worked on over the years had the weighted air valve and I thought all AFB's had it. Ron I'm not doubting what is being said here but without the air valve I would think there would be a substantial bog when the secondary's were winged open as there was no secondary pump shot www.tandmautomotive-omaha.com

Re: Carter AFB's [Re: TJP] #1561367 01/11/14 03:57 PM 01/11/14 03:57 PM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Still depends on the application.

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