Early 28 Carb?

[chrs1961815]

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?

[F.M.]

Originally Posted by chrs1961815

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..

[Gary Karr]

The bowl is actually the second generation Zenith with dowel pins on both front and back. It was used from February through July 1928.

[chrs1961815]

So the tops and bottoms match and it is a double venturi?

[Gary WA]

Yes

[chrs1961815]

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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.

[Gary WA]

Have some from Berts,Denver excellant quality.www.modelastore.com

[redmodelt]

The double venturi carbs used a different throttle butter fly so don't mix them up.

[Tom Wesenberg]

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