Zenith carb confusion

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12notes

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For the 1/2 VW engine, Great Plains sells the Zenith model 11, and Hummel Engines (Scott Cassler) sells the Zenith 13922. I can't find a lot of information about the model 11, and can't find anything at all about the 13922. Are these different part numbers for the same carb? If not, are there any pros/cons to the two, or are they similar enough not to make a difference?

I would be putting it on a Global 35hp engine.
 

Pops

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The model numbers for the Zenith carbs are very confusing. I believe the Zenith carb we use on different cc's of VW engines are the 68 Series of Zenith Carbs. This is what I found on another site about Zenith Carbs used on VW's, but didn't include the 1/2 VW.
1835 cc--- Use Model 1819
1915 cc--- Use Model 1819
2180 cc --- Use Model 2122
2276 cc --- Use Model 2122

On my 1835 cc VW, I use model 1819 and worked great. This might help someone, but sorry it will not help you on the Global 35 Hp engine.
https://www.gravelymanuals.com/pdf/Zenith_68_Series.pdf

https://norfar.com/products/zenith-13922-carburetor
 

Vigilant1

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For the 1/2 VW engine, Great Plains sells the Zenith model 11, and Hummel Engines (Scott Cassler) sells the Zenith 13922. I can't find a lot of information about the model 11, and can't find anything at all about the 13922. Are these different part numbers for the same carb? If not, are there any pros/cons to the two, or are they similar enough not to make a difference?
I can't answer your question, but here's another possible lead. It is a bit of overlap with what Pops already provided. This is what Steve Bennett wrote to a customer several years ago:
. . . Yes, it is confusing! You should see Zenith's master Catalog - for something really confusing. In general terms, a 12566 up through a 13922 are of the same body style and are put in what Zenith calls Model 68 series carbs. Part number 14992 up through 14998's are in Model number 267 series. . .
Also, Steve said that Great Plains uses their own part number to refer to the Zenith carbs.

From his text above, the "13922" appears to be a Zenith Model 68 series carb.

You could talk to Scott Cassler or the folks at Great Plains and they could probably tell you the difference. Scott is probably familiar with the Zenith carbs in the GP catalog, and will know if his is the same or not--and he could tell you why he sells what he does.
 

N8053H

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Call Scott and speak with him. He solders the middle of one of the jets closed for the 1/2 vw. Speak with Scott and he can explain this for you. Or do what I did and send him your carb. For a small fee he will not only do this but check your carb over and correct any issues.

As for these numbers, Scott can explain this for you. I believe one number is a model number and one a serial number for that model. Meaning they are the same carb. But ask Scott.
 

12notes

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I asked when I noticed the different part numbers after placing a bid for a new-in-box Great Plains model 11 carb on Ebay. I probably should have done that in a different order. Anyway, I won the auction at $200, I'm guessing it will work just fine.

I'll be calling Scott in a few weeks to order some items for the engine, and I'll be ordering a spinner from Great Plains soon, too, I'll ask then.

Thanks!
 

12notes

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The Great Plains Zenith model 11 I bought has "13922" stamped on the side, so they are indeed the same carburetor. Whether Great Plains makes any modifications before calling it a "Model 11" is a question I do not have an answer to yet, but will update when I find out.
 
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