In-Tank Fuel Filter | FerrariChat
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In-Tank Fuel Filter

Discussion in '308/328' started by rwbolt1, Mar 26, 2025.

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  1. rwbolt1

    rwbolt1 Karting

    Sep 10, 2006
    215
    Boerne, TX
    Full Name:
    Rodney Bolt
    #1 rwbolt1, Mar 26, 2025
    Doing fuel related work today (pump, filter, crossover hoses, etc) and was surprised to see the in-tank fuel pre-filter seems to be in good shape even after 35 years. I prodded firmly on the mesh and cage and it doesn't seem to be brittle. Only the adhesive attaching it to the nozzle has disintegrated. If I'm not mistaken, these filters are no longer available. Should I continue using or replace using the "sock filter method"? If I do continue to use, what adhesive (to reattach to the fitting) is compatible with being immersed in fuel? Any advice from your experiences is appreciated.
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  2. Sergio Tavares

    Sergio Tavares Formula 3

    Nov 15, 2018
    1,308
    Full Name:
    Sergio Tavares
    #2 Sergio Tavares, Mar 26, 2025
    fuel resistant gasket seaaler, was permatex grey but now is permatex pea sop color
     
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  3. Imatk

    Imatk Formula Junior

    May 6, 2007
    768
    #3 Imatk, Mar 27, 2025
    Mine was disintegrated so I had no choice. I replaced it with a sock filter and have had no issues.
     
  4. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,801
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #4 Steve Magnusson, Mar 27, 2025
    I would say "none" if you rely on the adhesive to provide both mechanical strength and sealing. Using the best possible adhesive for the sealing is OK, but I'd add some sort of mechanical attachment (like drilling some small holes and using some metal wire to literally "tie" the strainer onto the metal tube) -- JMO.
     
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  5. ProvaMo

    ProvaMo Formula Junior

    Jun 29, 2004
    351
    Mid West
    Full Name:
    Paul John
    #5 ProvaMo, Mar 28, 2025
    The original sock on mine (1979 US/NA) was pretty disintegrated, a good fit for me was a new 1970's (+/-) GM sock (5/16 ID or ~8mm). I was concerned about retention, but when I installed the new sock (with the tank out) looking through the fuel level sensor hole, the far end of the sock nicely rested against an internal structure, acting as solid retention method (i.e. I didn't use an adhesive)
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  6. Imatk

    Imatk Formula Junior

    May 6, 2007
    768
    #6 Imatk, Mar 28, 2025
    I used something similar on mine, but I had to drill out the hole so it would fit onto the fitting. Then I zip tied it after.
     

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