Air filter for Model A

[Y-Blockhead]

And the groove machined into the outside of the venturi routes the vent to the 3/16" hole to the carb throat. The "channel" from the float bowl does not go into the venturi, it goes around the outside of the venturi to the throat of the carb. I don't know how to better explain it.

 

[Werner]

Blockhead, I try it again. Please see picture. Sorry for my bad understanding.

 

[Werner]

I would like to ask if somebody can explain something to me about the milling between the float chamber and the venturi hole.

 

[Synchro909]

I would like to ask if somebody can explain something to me about the milling between the float chamber and the venturi hole.

I didn't get too worked up about doing this. I don't have a milling machine and there is no need for great precision. I used a die grinder there asnd on the lip under the venturi.

 

[Synchro909]

Would it work with one of these?

Katy, just back from yet another rally. Sorry for the delay replying.
I haven't seen either one of those air filters or one of those oil filter mounts on a car, let alone both at once. Your suggestion might work.
Has anybody tried it???

 

[Werner]

Hallo again,
I changed the Zenith-2 again on air-ballance today. From the float chamber directly above the choke flap shaft's front. Instead of brass, I used this time 1/5 inch copper tube, which can bend broken fracture-free and therefore build in one piece from hole to hole.

 

[Werner]

Now I have to ask again: I have just noticed today that there is in the upper carburetor housing an additional hole for venting. Above the hole in the under housing. (I do not understand the reason because 1 is enough.)

I think now that I have to close this hole too?

 

[Werner]

Addition:
Here in the book picture the channel is drawn. Unfortunately, he is not mentioned in the text.

 

[duke36]

The last thing that I would want is Gasoline drenched ABS plastic that close to my exhaust.

Darryl in Fairbanks

The ebay seller says it's 2 copper elbows.

 

[Synchro909]

Now I have to ask again: I have just noticed today that there is in the upper carburetor housing an additional hole for venting. Above the hole in the under housing. (I do not understand the reason because 1 is enough.)

I think now that I have to close this hole too?

That is not an original hole. I'd seal it too as you suggest.

 

[Tom Wesenberg]

If you modify the carb for an internal vent to the front of the choke, to use an air filter, then you also need to block off the original external vent.

 

[Y-Blockhead]

Why do you need to run the vent all the way to in front of the choke? My air balanced Zenith is vented to the carb throat just before the venturi. See photo in post #98.

 

[Synchro909]

Why do you need to run the vent all the way to in front of the choke? My air balanced Zenith is vented to the carb throat just before the venturi. See photo in post #98.

So long as the vent is between the air filter and the venturi, it doesn't matter. The pressure will be the same anywhere in that piece of the intake.

 

[Ed in Maine]

I think Charlie summed it up perfectly. Why not have your Model A run as Henry wanted it to during your life time! You don't need the air filter. Just my take, Ed

 

[SkimmerBob]

Hold filter firmly in hand...throw as far as possible...drive car

That’s funny!

 

[Werner]

Error. With the sealed hole the engine was not adjustable and too rich. The ventilation hole in the upper housing is necessary to get air into the channel for the idle needle!

Blockhead: Meanwhile, I have the hose line as shown by you in the area of ​​the choke flap. Thank you!

Synchro: Your comment is correct. Nevertheless I have now the tube pipe layed to a short distance before the choke flap achsle to get a shorter pipe.

Thanks to the helpers! Now my engine sucks in dust-free air and the carburetor does not mix too rich.

 

[Y-Blockhead]

So long as the vent is between the air filter and the venturi, it doesn't matter. The pressure will be the same anywhere in that piece of the intake.

Yes, you and I know that. I was asking Werner.

I think Charlie summed it up perfectly. Why not have your Model A run as Henry wanted it to during your life time! You don't need the air filter. Just my take, Ed

Please tell me why my air cleaner gets dirty. And I run engine pans.