zenith 3 Will a zenith 3 top work on zenith 1 and zenith 2 bottoms?
and what are the markings on zenith 3 top. thanks, carl |
Re: zenith 3 Yes, & The Z or None..
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Re: zenith 3 Plan Zenith was made by Zenith
Zenith (Zenith Detroit) tops can be recognized by the Z marking located below the throttle shaft. The lower bodies are marked Zenith or Zenith-1. There are subtle differences in the dowel pins/bosses on the upper body and fittings. The Holley (Holley Carburetor Company) upper body has an H or is plain below the throttle shaft. The lower body is plain or marked Zenith-2 (after 1/1/1929). Again there are subtle differences in the fittings both by year and by manufacturer. Lastly, The Ford motor company produced 2 carburetors for the Model A in 1931. The upper body was either marked with a 3, or was plain. The lower bodies were marked Zenith-3. |
Re: zenith 3 The distinguishing characteristics of the 3 top is the thinner casting (be careful, this makes them easier to break) and the bracing cast under the ears. I think Henry was trying to take some weight off the sidebowl and compensate with a stronger brace.
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Re: zenith 3 Here is a picture of a ZENITH-3 side bowl I have. Note the thin casting of the mounting surface to intake manifold and the reinforcing rib below the back mounting bolt.
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Re: zenith 3 All of the Zenith 3 carbs are not side bowl type. I think the Zenith 3 was made by Ford as a replacement part and was never standard on a new model A.
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Re: zenith 3 Jim Mason used to have a site that had all the carbs from a collection a friend had. It was presented with how they looked and who made them.
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Re: zenith 3 Model A org use to have most original and aftermarket carbs pictured plus lots of info.
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Re: zenith 3 The first Zenith-3 carburetor had the gas inlet at the front like the Zenith1 and Zenith-2; the upper housing had the thin mounting flange and the reinforcing rib to the back.
With the indented firewall the Zenith-1 (Zenith Company), Zenith-2 (Holley Company) and Zenith-3 (Ford Motor Co.) changed the upper housing to accommodate the side bowl filter. It is my understanding that all 3 of the carburetors could have appeared on A's coming from Assembly. I do not believe the Zenith-3 was a replacement item ? Ron |
Re: zenith 3 Hi Ron,
The finish on your Zenith 3 looks correct. Do you know what type of finish was used and does it hold up to gas? Thank you, Jim Sinclair |
Re: zenith 3 Jim Sinclair,
The finish I use has a dull black finish; after it is dry I rub the finish with a piece of toweling and it takes on fine sheen; the heat from engine seems to set the paint; it seems to hold up quite well as long as there is no gas leaks. The paint brand: Engine Enamel by AERVOE INDUSTRIES INC. Gardnerville, Nevada 89410 ; Flat Black #512; you can get it in a 6 pack, runs about $5.27 a spray can. You can talk to Jeff Weaver, customer service, at 1-800-227-0196 . Ron Rude |
Re: zenith 3 Purdy Not Post production. The April 1931 engine picture in the standards has a Zenith 3
https://www.fordbarn.com/forum/showth...0353&highlight |
Re: zenith 3 Ron,
Thanks for your reply Jim |
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