Air filter

[ian Simpson]

Originally Posted by eagle

I have an original aftermarket AirMaze on mine and it does not adversely affect the performance. I drive on lots of gravel roads and any filtering is better than none.

me too

[klawockvet]

I drive on any kind of road and need an air filter. K@N are probably the best solution for long engine life. I'm using one and have had no problems in over 5K miles.

[BILL WILLIAMSON]

Originally Posted by Mitch//pa

hey Dad i tried that and a worm came out
whuts that meen

Thet means you need an air filter, dummy, & if the wurm came out uf the Groound Buffalo, jist eat I, it's PROTEIN! Play like "SURVIVOR MAN"
S.A. DAD

[Dodge]

You should air balance the carburetor if you run a filter, it will keep it from running rich.
Google it....

[BILL WILLIAMSON]

I saw a pic of a simple balance system, he ran a small copper tube from the bowl vent hole on the upper back of the carb, drilled a hole in the side of the air intake throat & secured it with J.B. Weld.
Bill W.

[H. L. Chauvin]

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Just one more air filter experience to share:

After 25 or so responses shared with honest opinions, which one (1) is correct?

Maybe, "All of the Above."

Like anything else in life, one can read volumes of different opinions; however, one never really knows until one tries it.

A. If one already has a malfunctioning carburetor, already running rich, adding an air filter could cause extensive carbon build up on plugs and around valves and cause less horse power and reduced gas mileage.

B. If one has a carburetor that is not running rich, and one gets 20 mpg with stop and go traffic, a 6" tall K & N High Boy will allow lots of "free" air into the carburetor, and will not reduce gas mileage. It can also filter detrimental sandy, dirty air, prolong engine life, & with the High Boy arrangement offered on E-bay, (for Model A and B carburetors), this filter will never get dangerously wet with dripping liquid fuel to create a fire hazard.

Value of written articles without experience?

Again, just one (1) opinion:

They might provide some limited insight on the subject; but, if one never danced with a beautiful girl, reading love stories will never tell you what it is like.

Hope this helps!

[1931 flamingo]

Ran one 4-5 years ago, til it fell off.............................
Have another now but haven't installed it yet.
Paul in CT

[Elcastor]

Here is what I did with mine.



I wanted one that looked good, and was not a fire hazard. Easily removed for show if I want to. I started with some of the Airmaze pieces.

[Mitch//pa]

i hope that motor is breathing lead free solder

[H. L. Chauvin]

Hi Elcastor,

I guess you are aware that the companies that make Model A engine rings are going to remove you from their Thanksgiving Card List.

I quit getting Thanksgiving Cards from ring manufacturers ever since the first time I mentioned that "tall" K & N Air Filters work great on a Model A.

Come to think about it ....... I didn't get one from K & N either.

[BILL WILLIAMSON]

Originally Posted by Elcastor

Here is what I did with mine.



I wanted one that looked good, and was not a fire hazard. Easily removed for show if I want to. I started with some of the Airmaze pieces.

In Argentina, they used to run a similar system, using, "maybe" a '46 Ford Oil Bath air cleaner.
They STILL have MUD races there! I "THINK" I'll move??
Bill W.

[BudP]

Part of the explanation for differing experiences with Zenith carburetors and air filters may have to do with the carburetor itself. Later model Zenith carburetors have a factory installed balance passage between the float chamber and the air horn (where an air filter may be installed). This design compensates for any increase in carburetor vacuum and maintains the correct air/fuel ratios. Earlier model Zenith carburetors did not have this air balance passage which means in effect earlier Zenith carburetors are NOT designed for use with an air cleaner.

[Brianfrench65]

Bud; what Zeniths have that?

I have a Zenith-2 with raised markings. I was told that it was the latest design Zenith, and would perform great.

I did purchase a hi-boy, as I live on a dirt road.

[Dollar Bill]

Silt, dust and sand are known abrasives, I can't imagine anyone running an engine without one.

Virtually every engine manufacturer since the Model A include some type of air filtering device. Surely, the multitude of engine designers can't be wrong.

As previously mentioned, the wire screen or paper element that is commonly found on the Air Maze reproduction air filters are better than nothing. The wire screen will only filter out the big chunks and the paper filter is undersized and does not have a very long service life. A better solution is the K&N 5.5" filter (P/N E9257) which flows slightly less air than an unfiltered carburetor.

It's your engine, run it anyway you want to.

[billwill]

Even your NOSE has air filters thats what hairs are.

[160B]

Originally Posted by Brianfrench65

......................I have a Zenith-2 with raised markings. I was told that it was the latest design Zenith, and would perform great..........................

Not sure what your source meant by latest design. You may want to share the below info with your source as the raised ZENITH carburetor, center photo, was used from February 1929 through April 1929.

RG&JS 1-15 Revised 2011





Left photo--
Zenith carburetor castings used from May
1929 through December 1929. Note the
full width rim bowl design, no boss on the
throat area, the boss under the GAV is
rounded to the side and there is no 3rd
brass plug in the boss. Bowl has cast
"Zenith-1 ".

Center photo---
Holley carburetor castings used from
February 1929 through April 1929. Note
the stepped bowl rim design, no "H" on
the throat area, the boss under the GAV
is rounded to the side and there is a 3rd
brass plug in the boss. Bowl has cast
"Zenith-2" in raised letters.


Right photo--
Zenith carburetor castings used from
January 1930 through April 1931. Note
the full width rim bowl design, no boss on
the throat area, the boss under the GAV
is reduced in size and rounded to the side
and there is no 3rd brass plug. Bowl has
cast "Zenith-1 ".