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Old 06-23-2019, 10:46 AM   #1
chrs1961815
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Default Early 28 Carb?

After restoring one carb I thought I would try another and started to disassemble another one I have that I thought was a double venturi. Somebody had worked on the carb because some things were not right. The bowl has the indented zenith on the front, no threads for the secondary well, and a brass GAV which point to early 28. But there is a vent hole in the lower bowl and some parts that do not belong. Furthermore, I am not sure if the top matches. Can somebody clear this up?
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Old 06-23-2019, 12:22 PM   #2
F.M.
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Default Re: Early 28 Carb?

Quote:
Originally Posted by chrs1961815 View Post
After restoring one carb I thought I would try another and started to disassemble another one I have that I thought was a double venturi. Somebody had worked on the carb because some things were not right. The bowl has the indented zenith on the front, no threads for the secondary well, and a brass GAV which point to early 28. But there is a vent hole in the lower bowl and some parts that do not belong. Furthermore, I am not sure if the top matches. Can somebody clear this up?
The top was used from 1928-Sept-1931 on Zenith Carbs. The Bottom was used from 1927-June-1928 on Zenith Carbs..
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Old 06-23-2019, 12:52 PM   #3
Gary Karr
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Default Re: Early 28 Carb?

The bowl is actually the second generation Zenith with dowel pins on both front and back. It was used from February through July 1928.
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Old 06-23-2019, 01:33 PM   #4
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Default Re: Early 28 Carb?

So the tops and bottoms match and it is a double venturi?
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Old 06-23-2019, 05:54 PM   #5
Gary WA
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Default Re: Early 28 Carb?

Yes
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Old 06-23-2019, 09:31 PM   #6
chrs1961815
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Default Re: Early 28 Carb?

How are the repro double venturis? A and L sells them and they are usually pretty spot on. I know a guy who rebuilds carbs and he literally has a bucket full of repro venturis that he says don't work.
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Old 06-24-2019, 09:52 AM   #7
Gary WA
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Default Re: Early 28 Carb?

Have some from Berts,Denver excellant quality.www.modelastore.com
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Old 06-24-2019, 11:07 AM   #8
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Default Re: Early 28 Carb?

The double venturi carbs used a different throttle butter fly so don't mix them up.
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Old 06-24-2019, 11:08 PM   #9
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Default Re: Early 28 Carb?

I bought a double venturi from A&L, and it looks great, but I haven't run the carb yet.
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