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07-27-2016, 07:37 PM | #1 |
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Modern Fuel filters for the Model A
I have a late 1931 Zenith carburetor with sidebowl on my A400 convertible sedan (indented firewall)
I need a good fuel filter - I have a metal mesh filter just behind the firewall shut off valve, and another metal mesh filter within the sidebowl. I had to disassemble and clean the carburetor after just 250 miles due to rust particles. How can I get modern 40 micron filter technology into this setup ? The external inline filters look like a kludge. Is there an internal 40 micron filter that I could use ? Something in the sidebowl would be the easiest to install. |
07-27-2016, 08:06 PM | #2 |
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Re: Modern Fuel filters for the Model A
i would fix the source of the problem first....
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07-27-2016, 09:09 PM | #3 |
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Re: Modern Fuel filters for the Model A
Gravity messes things up sometimes.
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07-27-2016, 09:43 PM | #4 |
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Re: Modern Fuel filters for the Model A
Flush the tank a few times. Be sure to shake real good before and while draining.
Make sure the screen is good on the side bowl. Run it. You did not say you are having problems running. The A carb is designed to handle dirt that gets past the filter and is easy to clean. If the dirt is not a super bad problem it will likely clear itself by running it a bunch. I would expect that the amount of dirt being trapped quickly lessons as you drive it. When dealing with the A sometimes it is best to keep things simple and work with its design. |
07-27-2016, 10:01 PM | #5 |
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Re: Modern Fuel filters for the Model A
Put a pencil filter at the top of your tank outlet.
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07-27-2016, 10:07 PM | #6 |
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Re: Modern Fuel filters for the Model A
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07-28-2016, 12:08 AM | #7 |
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Re: Modern Fuel filters for the Model A
If you have a outside gas shutoff then the pencil filter won't work.youre best off to flush the tank
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07-28-2016, 12:35 AM | #8 |
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Re: Modern Fuel filters for the Model A
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07-28-2016, 02:20 AM | #9 |
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Re: Modern Fuel filters for the Model A
Maybe try dropping a magnet into the tank and positioning it near the outlet. It will catch any rust particles. I do the same in the coolant overflow tank. If possible, it's best to see to it that they can be removed at a later date for cleaning.
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07-28-2016, 04:40 AM | #10 |
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Re: Modern Fuel filters for the Model A
Through all my drama I had with a rusty tank till I fixed it I never had to clean the carb out. Only got 5 or 10 miles till cleaning filters and dirty leg but never the carb.
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07-28-2016, 04:50 AM | #11 |
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Re: Modern Fuel filters for the Model A
NAPA part # 3039
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07-28-2016, 06:30 AM | #12 |
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Re: Modern Fuel filters for the Model A
Put a pencil filter at the top of your tank outlet.
x2 I then buy the inexpensive plastic filters, like 10 at a time and change them out, right before going into the carb. as Kevin says, in time you will be running clean whiskey! |
07-28-2016, 07:24 AM | #13 | |
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Re: Modern Fuel filters for the Model A
Quote:
Keep in mind that rust itself (ferrous oxide) will not be attracted to a magnet, but rustY metal will. I find mine catches all but the tiniest bits of fine rust and the glass bowl catches the rest. Ken
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07-28-2016, 10:52 AM | #14 |
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Re: Modern Fuel filters for the Model A
How? Does it go in horizontally? I thought the idea was for it to stand up vertically, so the crud is stopped on say the bottom 1/3, and the rest of the screen flows clean gas. If it's horizontal, I would think you have more of a chance to plug it up. I guess I just assumed,because of the different angles it wouldn't work.
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07-28-2016, 11:42 AM | #15 |
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Re: Modern Fuel filters for the Model A
I hope you are keeping those plastic filters safely away from your exhaust manifold.
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07-28-2016, 02:57 PM | #16 | |
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Re: Modern Fuel filters for the Model A
Quote:
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07-28-2016, 03:12 PM | #17 |
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Re: Modern Fuel filters for the Model A
I have flushed my tank twice in the last 7/8 years,and added a dirty leg with an inverted pea trap 5 years ago. I've cleaned the leg a couple of times(not much in it), and haven't had any issues since. The little in line filter I used wouldn't work under heavy demand. I do drive my car all year round.
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07-28-2016, 07:34 PM | #18 |
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Re: Modern Fuel filters for the Model A
Even though the filter in the valve would be almost horizontal, it still does a good job. You need to flush the tank to first get all the loose crud out, then the filter will take care of any left overs that break loose. Just flush by using a hose from the drain into a cloth covered bucket, and keep flushing until no ,more junk catches on the cloth.
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07-28-2016, 10:10 PM | #19 |
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Re: Modern Fuel filters for the Model A
I use this on my SW Indented tank 68C with great results. It is available at the vendors for late 1931's for around $35.
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03-27-2022, 12:36 PM | #20 |
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Re: Modern Fuel filters for the Model A
Hello Bruce....I realize this is an old thread, but I've just purchased a 68C and am sorting through how to filter the gas....the glass filter bowl in your posting does not seem to have a fuel shutoff but seems to fit in the location of the shut off valve at the indented firewall.
Can you elaborate on how you cut off fuel? Or can anyone else on the forum with a late 31 (indented firewall) model A provide details on filtering of fuel? The car I just obtained has a large inline filter (see photo)...I'd like to replace with something that looks like it fits in better...at same time I swap out the Tillotson carb for a proper Zenith side bowl one. Last edited by clifforddward; 03-27-2022 at 03:29 PM. Reason: adding comment about incorrect carburetor |
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