Re: Carter AFB's
[Re: johnfin]
#1561349
01/10/14 11:27 AM
01/10/14 11:27 AM
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Joined: Jan 2003
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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.
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Re: Carter AFB's
[Re: johnfin]
#1561350
01/10/14 03:51 PM
01/10/14 03:51 PM
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Posts: 15,842 Omaha Ne
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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).
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Re: Carter AFB's
[Re: johnfin]
#1561354
01/10/14 06:11 PM
01/10/14 06:11 PM
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Posts: 9,436 Blair County,PA
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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.
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Re: Carter AFB's
[Re: perfmachst]
#1561356
01/10/14 06:38 PM
01/10/14 06:38 PM
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Joined: Sep 2007
Posts: 14,889 up yours
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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.
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Re: Carter AFB's
[Re: perfmachst]
#1561357
01/10/14 06:40 PM
01/10/14 06:40 PM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
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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)
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Re: Carter AFB's
[Re: perfmachst]
#1561359
01/11/14 01:43 AM
01/11/14 01:43 AM
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Posts: 9,436 Blair County,PA
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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.
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Re: Carter AFB's
[Re: Cab_Burge]
#1561365
01/11/14 02:47 PM
01/11/14 02:47 PM
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Posts: 6,906 IL, Aurora
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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
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Re: Carter AFB's
[Re: 383man]
#1561366
01/11/14 03:51 PM
01/11/14 03:51 PM
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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
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