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03-23-2017, 08:09 PM | #1 |
Senior Member
Join Date: Jul 2010
Location: west coast Fla..
Posts: 311
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Double Venturi Zenith
I have rebuilt a few double venture Zeniths and I have one in process now that has a steel choke lever that has a D stamped on it and it has a steel throttle lever that has D on the back with an F inside, the throttle lever is molded the same as the brass and also the choke lever, never saw these before. It has the cap jet the has the orfiest on the under side. ... JD
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03-23-2017, 08:20 PM | #2 |
Senior Member
Join Date: May 2010
Posts: 335
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Re: Double Venturi Zenith
Yes, those forged steel levers are pretty rare. The levers were nickel plated. Does your upper casting have a "Z" on the front or a raised "Z" on the back of the upper casting? I restored one and sold it to Dean Drenzik, owner of Model A serial number 495.
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03-23-2017, 08:30 PM | #3 |
Senior Member
Join Date: Jul 2010
Location: west coast Fla..
Posts: 311
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Re: Double Venturi Zenith
Has a "Z" stamped on the front top half and is a Zenith. Has the original pin to hold venturi. Just Zenith ,not 1 or 2. Venturi will have to be replace, have new one....JD
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03-26-2017, 01:55 PM | #4 |
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Join Date: Jun 2010
Location: San Diego, CA
Posts: 1,487
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Re: Double Venturi Zenith
Here are a couple of pictures of what you are discussing. This choke lever is forged steel and does have manufacturer's marking on the front. The throttle leaver is also forged steel. Both are nickel plated. This is on a md-December 27. The carburetor is the first generation Zenith with the raised "Z" on the throat in the engine side. The lower bowl is single pinned on the engine side for the double venture and is engraved Zenith on the bowl.
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03-26-2017, 03:31 PM | #5 |
Senior Member
Join Date: Jul 2010
Location: west coast Fla..
Posts: 311
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Re: Double Venturi Zenith
My levers look the same with the same markings except the choke lever extends out with the small hole on end like the later ones. Nickle plated steel.
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03-26-2017, 05:16 PM | #6 |
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Join Date: May 2010
Location: Quincy, CA.
Posts: 1,708
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Re: Double Venturi Zenith
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On this Zenith, there is no removable secondary well, the compensating jet is a #18 (.036),the cap jet has the orfice at the bottom of the jet. I have found nickel plating on Holley carbs on the brass throttle and choke levers but not on Zenith carbs ? Ron Last edited by Ron in Quincy; 03-26-2017 at 10:36 PM. Reason: Additional information |
03-28-2017, 02:55 PM | #7 |
Senior Member
Join Date: Jul 2010
Location: west coast Fla..
Posts: 311
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Re: Double Venturi Zenith
Got it rebuilt, runs sweet and this one's my new keeper. Didn't have much wear, even the throttle shaft was tight, nice casting.When I got it was crusty but cleaned up nice.posted pic
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