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Thread: Best Supercub gas cap ?

  1. #1
    sohc427mt's Avatar
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    Best Supercub gas cap ?

    I am looking for the best gas cap I have 23 gal tanks. I had a motor out yesterday luckily got it on the ground with no problems Felt like a Fuel starving issue I knew I had Fuel tried the Fuel drain nothing , opened cap to look and big vacuumed the vents were not working. On annual rubbers were replaced and blocked ventilation. I want to replace my caps with the best venting caps. ??? I see some Cubs with the extended tubes ? Is that the way to go ? Any advice is appreciated.
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  2. #2

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    I use the these on my 150 now 160 hp Super Cub and have never had an issue, well other than the cost when I lost one.

    https://fadodge.com/fuel-cap-vented/
    Remember, These are the Good old Days!
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  3. #3
    sohc427mt's Avatar
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    Thanks my cub is also
    a 160 cub. I will check them out thank you

  4. #4
    mvivion's Avatar
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    Yes, those Atlee caps are the way to go. Some 180 hp STCs require the “snorkel” caps, but you don’t need them.

    MTV
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  5. #5

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    I think those snorkel caps are also required with the Cub Crafters fuel system STC.
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  6. #6
    mvivion's Avatar
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    Quote Originally Posted by bubb2 View Post
    I think those snorkel caps are also required with the Cub Crafters fuel system STC.
    Yes, for the header less fuel system.

    MTV
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  7. #7
    Penguin's Avatar
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    I bought the Atlee caps. Does anyone else have issues with the rubber from the gaskets chafing off into the vent holes when you twist the caps on? I sure do. A little fuel lube didn't seem to help.
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  8. #8
    sohc427mt's Avatar
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    I called f Atlee Dodge they recommend I buy the ones with the vent tubes , they said the pressure the tanks and vent well. So I bought a pair.

  9. #9

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    Spruce has Aeronca caps for under $20, both vented and non-vented. Look a lot more like original Piper caps than the ones from CC and Atlee.

    My j3 wing has a non-vented cap with a copper snorkel soldered in - been working fine for 22 years.
    Last edited by bob turner; 04-30-2021 at 10:33 AM.
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  10. #10

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    Quote Originally Posted by Penguin View Post
    I bought the Atlee caps. Does anyone else have issues with the rubber from the gaskets chafing off into the vent holes when you twist the caps on? I sure do. A little fuel lube didn't seem to help.
    Haven't had that issue and been running them for 10 years but the fuel lube sure helps because they are a tight fit.
    Remember, These are the Good old Days!
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  11. #11

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    Quote Originally Posted by Penguin View Post
    I bought the Atlee caps. Does anyone else have issues with the rubber from the gaskets chafing off into the vent holes when you twist the caps on? I sure do. A little fuel lube didn't seem to help.
    Carefully bend the ears to open them up a teensy bit. Mine were too Effing tight, too.
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