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Old 10-26-2010, 08:04 AM   #1
Jack '29 Sport Coupe
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Default Fuel Filter

I was over at my friend's house the other day and watched as he installed his carburator after cleaning out the mesh micro filter that disolved as a result of todays fuels. What a mess. He told me that he was going to put
in an inline filter instead. Soooooo, I opened the rumble lid on my coupe and
pulled out my spare filter and told him to try it instead----no need for clamps, no need for hoses to splice into the fuel line, no need to cut the line, etc., etc.... A lot of guys on the barn know the filter I'm talking about, but for you newbies it's the NAPA filter P/N 3039 that sits in the glass sediment bowl. Of course it doesn't work for you guys with the sediment bulb, lol. What I like about this filter is that once it is installed
there is about an inch of space between the bottom of the filter and the
glass bowl-----plenty of room to place a small magnet to pick up any rust
particles that the filter might miss. I use a 1/4" X 1: industrial magnet that
grabs onto the bottom of the filter on the metal rim. Pretty neat. My
friend is as "happy as a clam." JMHO

Jack
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Last edited by Jack '29 Sport Coupe; 10-26-2010 at 09:25 AM.
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Old 10-26-2010, 08:41 AM   #2
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Default Re: Fuel Filter

I had a lot of problems using a filter in the sediment bowl. Atleast a few years back it clogged up very fast. Chances are the tank is much cleaner now.

I have the screen installed in the sediment bowl and since we've been driving it i'm seeing far less in the bowl. At first I was emptying the bowl every trip. Now its rare.

But I do like the idea of a magnet in the bowl to catch rust! I'll be throwing one in immediately.
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Old 10-26-2010, 09:17 AM   #3
Jack '29 Sport Coupe
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Default Re: Fuel Filter

I think you'll like it. In short order you will probably see the magnet sport a new
patina-----rust/brown, lol.

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Old 10-26-2010, 09:31 AM   #4
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Default Re: Fuel Filter

NAPA 3039/with magnet on bottom
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Old 10-26-2010, 06:28 PM   #5
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Default Re: Fuel Filter

i just put the filter in mine also so i am still testing it. never had a problem with trash in my tank anyway but figured it cant hurt having it. i also left the screen on top of it also.
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Old 10-30-2010, 10:05 AM   #6
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Default Re: Fuel Filter

Jack : I assume the only thing that holds this filter in is the black flat part of the filter? I guess it acts as a gasket against the glass?

I'm looking into ordering two of them and more details if possible.
Also which side does the tank drain into. the center of the filter, or the outer edge?

I have been thinking of ordering a 1" round magnet from mcmaster and laying it in the bowl.
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Old 10-30-2010, 11:58 AM   #7
Jack '29 Sport Coupe
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Default Re: Fuel Filter

No, the filter has a lip on the edge and just sits on top of the sediment bowl and
the filter hangs inside just as pretty as you please. Check it out on google and you
will see a picture of the lip. Just google Napa filter 3039.

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Old 10-30-2010, 12:28 PM   #8
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Default Re: Fuel Filter



Looks like a spring in the bottom?
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Old 10-30-2010, 12:29 PM   #9
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Default Re: Fuel Filter

Doesn't the tank drain into the center of the filter, making the magnet useless?
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Old 10-30-2010, 12:38 PM   #10
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Default Re: Fuel Filter

Quote:
Originally Posted by IrishHills View Post


Looks like a spring in the bottom?

thats a different design filter than the one talked about here. this one has a large lip built into the top so the glass bulb holds it up no spring needed..
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Old 10-30-2010, 12:48 PM   #11
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Old 10-30-2010, 01:35 PM   #12
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Default Re: Fuel Filter

Mitch has it right. That other filter is a different critter. No spring required with the
3039. Mitch's picture shows the lip that I mentioned. Just pop it into the bowl and
the lip will seat onto the top of the bowl.

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Old 10-30-2010, 02:48 PM   #13
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Default Re: Fuel Filter

OK, I see.. thanks
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Old 10-30-2010, 03:08 PM   #14
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Default Re: Fuel Filter

The first pic Mitch put up looks like a WIX one,these are longer and wont fit in some V8 glass bowls. The napa 3039 does need a spring on the V8 bowls and the center hole has to be opened up a little to fit over the nub in the center of the V8 pump.ken ct. Use in all my glass bowl rebuilt pumps.
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Old 10-30-2010, 04:45 PM   #15
Jack '29 Sport Coupe
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Default Re: Fuel Filter

Ken, I know nothing about the V8 bowls, but the 3039 does NOT need a
spring on the "A" bowl.

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Old 10-30-2010, 04:50 PM   #16
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Default Re: Fuel Filter

Mr. Tube, in spite of the excellent filtering of the Napa 3039 filter, the magnet
DOES pick up some rust that manages to slip through---albeit very fine. Every couple
of months or so, I take the magnet out and wipe off the fine particles. Every bit of
a foreign item you can keep out of the carb is a good thing. JMHO

Jack
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Last edited by Jack '29 Sport Coupe; 10-30-2010 at 05:51 PM.
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Old 01-15-2012, 03:36 PM   #17
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Default Re: Fuel Filter

Sorry to bring up another old thread... but did not see this addressed in any of the many threads that spoke about the NAPA 3039 filter

I have a '31 with the glass sediment bowl...

I acquired the 3039 filter and, indeed, it does fit in the glass bowl, on the shoulder very nicely.

My question has to do with the flange on the filter.

Has the hole in the center for the fuel to enter - and a series of smaller holes around the edge - presumably for the fuel to pass thru on it's way to the outlet.

The question is both versions of the bowl gasket (cork or the neoprene) cover the series of smaller holes... how does the fuel make it to the outlet

Seems like the gasket would be blocking the flow...
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File Type: jpg DSC00150.JPG (26.5 KB, 57 views)
File Type: jpg DSC00152.JPG (28.9 KB, 62 views)
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Old 01-15-2012, 04:46 PM   #18
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Default Re: Fuel Filter

Just run with original brass filters if you are running the original carb.

The carb is designed to let crap run through it. To be honest, the original brass screens did a great job on my 30 fordor.

The tank would clog the outlet valve when the stuff settled out. So I put in a short piece of copper tubing in the valve to prevent stuff from getting in the valve. I put in a glass sediment bowl just so I could see what was coming out. I then just drove the car. I had to empty a lot of junk out of the bowl at first. Pretty quickly the amount of junk in the bowl became minimal. I monitored the original carb, got to love the single bolt tear down. Never found any stuff in the carb or in the carb filter.

Speaking of original filters, I am looking for a nice original glass bowl filter screen for my cabriolet.
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Old 01-15-2012, 04:53 PM   #19
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Default Re: Fuel Filter

I suggest that you not get too excited about how well your filter works until you've got a couple hundred miles on it and until you've driven the car on a hot day. Those things are very seductive--they look so slick. IMO, they work best for folks whose systems are so clean that they don't need one anyhow. Vapor block is another issue--I could watch the clear plastic in-line model fill up with vapor and shut the engine down.

Here's a photo of all the models I've tried, and removed, over the years. The best for me was the red fiberglass CG3, but the new models are not made with fiberglass any more.

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Old 01-16-2012, 11:24 PM   #20
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Default Re: Fuel Filter

I had a lot of trouble with the micro mesh filter that has the spring and what not. After about a week the gas had turned the plastic into rubber practically and the spring smushed it up until it blocked the fuel flow. I had to put a couple small hose clamps around it for it to keep it's shape until I got home. Since then I've been running the paper in-bowl filter and haven't had any trouble what so ever. A guy I know runs the same paper filter and changes it every other year and has never had any trouble either.
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