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Old 02-14-2018, 09:52 PM   #1
bucket-o-rust
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Default zenith carb

I have a zenith carb that for some reason does not have threads in the secondary well hole to screw the brass secondary well fitting into. Is that a normal carb or is it some kind of mistake?
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Old 02-14-2018, 10:22 PM   #2
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Default Re: zenith carb

Quote:
Originally Posted by bucket-o-rust View Post
I have a zenith carb that for some reason does not have threads in the secondary well hole to screw the brass secondary well fitting into. Is that a normal carb or is it some kind of mistake?
Normal..
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Old 02-14-2018, 10:31 PM   #3
Mike Peters
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Default Re: zenith carb

https://www.macsautoparts.com/ford_m...dary-well.html
Is this the secondary well pf which you are referring?
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Old 02-14-2018, 11:05 PM   #4
bucket-o-rust
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Default Re: zenith carb

Yes that is the part
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Old 02-14-2018, 11:44 PM   #5
Bill Cilker
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Default Re: zenith carb

You have an early 1928 carb.
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Old 02-14-2018, 11:48 PM   #6
Gary WA
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Default Re: zenith carb

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Double Venturi Holley Jun 27-Jun 28
Attached Images
File Type: jpg Db Venturi 1.jpg (75.3 KB, 10 views)
File Type: jpg db vent 2.jpg (87.8 KB, 14 views)
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Last edited by Gary WA; 02-15-2018 at 05:24 PM.
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Old 02-15-2018, 12:43 AM   #7
bucket-o-rust
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Default Re: zenith carb

I know nothing about the past on this carb. I came by it when I purchased a basket case model A . It has a single venturi in it now. Do I need a double venturi in it before it will work?
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Old 02-15-2018, 07:10 AM   #8
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Default Re: zenith carb

yur carb wil wrk juz fine with no secondary well and a single venturi . I have one running on my early ccpu engine.
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Old 02-15-2018, 08:18 AM   #9
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Default Re: zenith carb

Look in the intake end of the carb,with the choke open.Are the two jets inline,or offset from one another?If they are inline it is a true double venturi,and if they are offset then it is a single venturi.
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Old 02-15-2018, 10:35 AM   #10
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Default Re: zenith carb

Bill C. is correct, early '28 carb, single venturi. Mine is the same and it's the original.
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