Re: Carter AVS block off plate for idle compensator
[Re: Moparmaniacc]
#3095652
11/20/22 12:17 AM
11/20/22 12:17 AM
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Joined: Mar 2003
Posts: 18,678 Fresno, CA
Jim_Lusk
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I've never really known what that piece was for. It was not on all AVS carbs, but I have always put it back on and never had bad performance from an AVS. I'd have to go look at a carb, but my impression was that that was to release pressure from the intake on deceleration (this was just a guess).
Last edited by Jim_Lusk; 11/20/22 12:18 AM.
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Re: Carter AVS block off plate for idle compensator
[Re: Moparmaniacc]
#3095677
11/20/22 06:48 AM
11/20/22 06:48 AM
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Joined: Feb 2003
Posts: 2,810 Sobieski Wi
bee1971
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master
Joined: Feb 2003
Posts: 2,810
Sobieski Wi
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Simple
Make a new gasket using the original as an template
With the new gasket , DONT drill or punch out the large center hole
Re install idle compensator using your new gasket Vacuum is now sealed off
Last edited by bee1971; 11/20/22 06:51 AM.
1971 Dodge Charger Superbee 2011 Ram Sport 1500 Quad Cab Deep Water Blue Loaded Siberian Huskies
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Re: Carter AVS block off plate for idle compensator
[Re: bee1971]
#3095679
11/20/22 07:01 AM
11/20/22 07:01 AM
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Joined: Feb 2003
Posts: 2,810 Sobieski Wi
bee1971
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master
Joined: Feb 2003
Posts: 2,810
Sobieski Wi
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Idle Compensator
The Idle Compensator is generally used on vehicles with air conditioning. When a vehicle comes to a stop and the engine is hot, the carburetor tends to richen up and even percolate (boil). The compensator has a bimetal piece of metal that when the temperature gets hot, the bimetal curls up and causes the idle compensator to open. This allows extra air into the intake, below the throttle valve.
1971 Dodge Charger Superbee 2011 Ram Sport 1500 Quad Cab Deep Water Blue Loaded Siberian Huskies
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Re: Carter AVS block off plate for idle compensator
[Re: bee1971]
#3095685
11/20/22 07:37 AM
11/20/22 07:37 AM
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Joined: Feb 2003
Posts: 10,201 Someplace you aren't
SomeCarGuy
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What trouble are you having? I’d not be making a change like that just because an article said to. Did it say what issue it would correct and are you having that issue?
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Re: Carter AVS block off plate for idle compensator
[Re: Moparmaniacc]
#3095925
11/21/22 02:43 AM
11/21/22 02:43 AM
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Joined: Aug 2003
Posts: 43,129 Bend,OR USA
Cab_Burge
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I Win
Joined: Aug 2003
Posts: 43,129
Bend,OR USA
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I've seen many magazine writers fed a line of baloney sauce by supposed "experts" testing the writers knowledge and gullibility to see if they will print bad or misinformation. Me thinks that article was one of them I've had a bunch of 1968 to 1971 Mopars, both BB and SB that had that type of carb and never had any issue with that device, I've never block them off or heard of any other Mopar SS and Stock class racer say to do that, including John Bauman, Mopars main carb guru back in the mid 1970s I did make sure they seated properly against the main body
Last edited by Cab_Burge; 11/21/22 02:44 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Carter AVS block off plate for idle compensator
[Re: lewtot184]
#3095991
11/21/22 11:55 AM
11/21/22 11:55 AM
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Joined: Feb 2003
Posts: 10,201 Someplace you aren't
SomeCarGuy
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I Live Here
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An insulator is a must for these or really any carb for sure. I’m not seeing what benefit blocking the compensator brings to the table. It’s already blocked unless enough heat is built up to open it. I suppose it could create turbulence and decrease airflow, but who would’ve done a test to see if it was even measurable? I haven’t taken an avs apart in years or looked down in one that had that part in that time. I don’t think it overhangs the bore so still not seeing a way it would hurt flow. My car has the correct number avs and has factory ac. I’ll have to look down it and see if it has one.
I want my fair share
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