#1  
Old 07-19-2020, 01:39 PM
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Default I think I'm done with the foam air filters

I was inspecting the foam air filters yesterday and found them to be falling apart. They also don't do a great job of actually holding the oil on the filter element, it eventually drains down into the base and makes a mess (and yes, I only oil them lightly but evenly). Given the cost and questionable effectiveness of the foam filters I think I'm going to switch to GM paper filters and be done with it.

When we restored the car we went with the reproduction foams that do not have the AC logo. Are the reproductions with the AC logo any better? They cost more than twice as much.

I like the look of the foam filters, but if they don't work all that well and don't last the expense seems to not be worth it.

  #2  
Old 07-19-2020, 02:27 PM
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I gave up on the foam a long time ago.

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Old 07-19-2020, 03:13 PM
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I have always considered the foam filters show items only.

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Old 07-19-2020, 04:54 PM
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There a lot of fun after a back fire lol..

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Old 07-19-2020, 05:37 PM
bob d bob d is offline
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Thumbs up Foam Filters

When we rebuilt my tripower. I bought Napa Gold 2032 filters. They work great.

  #6  
Old 07-19-2020, 08:19 PM
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I agree with Kenth. You can still buy the AC replacement paper filters.

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Old 07-20-2020, 06:18 PM
mgarblik mgarblik is offline
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I love the look of the foam elements. I had no problem with the AC imprinted foams falling apart. But they don't trap dirt and work nearly as well as paper. If I was driving the car much, I would use paper.

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Old 07-21-2020, 11:52 AM
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The foam filters made by REM often come apart at the seam. I've had good success re-attaching the ends with 3M weatherstrip adhesive (black). You'd think after all these years, they'd use a better glue. I believe the same material is used for the ones marked with AC as the earlier ones. I have some made by Paul Rodkey that may use a different media.

There has always been controversy about the effectiveness/air flow ability of foam vs. paper. The OEM foam was much more dense than the repro product.

Since we drive our cars mostly to shows, we leave the foams in place at all times. I believe paper is more effective in removing dirt from the airstream, but someone else will have to chime in on airflow.
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  #9  
Old 07-22-2020, 11:43 PM
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Paper filters on the car now, they look good. Foams were getting worse than I was even aware.

  #10  
Old 08-02-2020, 05:28 AM
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The fact that most production cars use paper filters is reason enough for me to not use foam.
If there was any upside on foam it would get used in production,

Only usefull in short dirt track races , were you wash them after every race.

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Old 08-02-2020, 08:00 AM
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Quote:
Originally Posted by Rich-Tripower View Post
Paper filters on the car now, they look good. Foams were getting worse than I was even aware.
The 1st or 2nd design ? In what way ?

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Old 08-02-2020, 09:30 AM
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Quote:
Originally Posted by chrisp View Post
The 1st or 2nd design ? In what way ?
The foam was falling apart.

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Old 08-03-2020, 08:35 AM
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Quote:
Originally Posted by Rich-Tripower View Post
The foam was falling apart.
Must have been the 1st. maker REM that has the glue seam & no lip top & bottom to seal the screen , Is that the one ?

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Old 08-03-2020, 08:43 AM
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Nearly all the REM foams separate at the seam. There is no lip like the OEM foams, diameter is smaller, and the foam cells are much larger than OEM.

I believe there are no surviving OEM foams today. I had some NOS ones in boxes that crumbled when removed from the box.

I remember seeing a comparison of air flow between foam filters & paper showing paper better than foam in every way except appearance. Anyone else have info on this?

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  #15  
Old 08-03-2020, 10:32 AM
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Quote:
Originally Posted by chrisp View Post
Must have been the 1st. maker REM that has the glue seam & no lip top & bottom to seal the screen , Is that the one ?
Yes, the ones without the AC logo. The seams are fine, but foam itself is just coming apart.

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