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Thread: [SOLVED] What type of rad filler neck is this?

  1. #1
    Senior Member Frank818's Avatar
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    [SOLVED] What type of rad filler neck is this?

    I have Mike Everson's hard coolant lines with the rad inlet on the top right (passenger's side).

    There is that plastic black fill cap overflow coupler with 13240 written upside down.

    Does anyone know what type it is? American? European? Japanese?

    All I know is that that Behr cap fits.

    I'm trying to change the cap as it opens around 22psi (150kpa) and let's a lot of coolant flow into the rad's overflow tank, so the coolant that is in my VW overflow tank located higher is flowing there. If I open up the cap, it will spill cuz there is coolant at a higher level (my engine head sits quite higher too).

    I'm trying to know the hole size, probably around 1.5", and what type that coupler is. People selling fill caps often don't know their size, they just know "fits Japanese", "fits American"...

    Mike himself doesn't know the size.


    2017-08-12 13.46.51.jpg
    Last edited by Frank818; 08-25-2017 at 06:43 PM.
    Frank
    818 chassis #181 powered by a '93 VW VR6 Turbo GT3582R
    Go-karted Aug 5, 2016 - Then May 19+21, 2017
    Tracked May 27/July 26, 2017
    Build time before being driveable on Sep 27, 2019: over 6000h
    Build Completed Winter 2021

  2. #2
    Senior Member Frank818's Avatar
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    Ok the filler neck is American type, so normally the Moroso caps should fit in there. The whole list of them are available at Summit and ebay.
    Frank
    818 chassis #181 powered by a '93 VW VR6 Turbo GT3582R
    Go-karted Aug 5, 2016 - Then May 19+21, 2017
    Tracked May 27/July 26, 2017
    Build time before being driveable on Sep 27, 2019: over 6000h
    Build Completed Winter 2021

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