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  •  » Source for rubber plug to fill a/c firewall opening?

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    4/29/2016 7:10 AM  #1

    LondonSteve
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    From: London, Ontario, Canada
    Registered: 4/01/2013
    Posts: 136

    Source for rubber plug to fill a/c firewall opening?

    I have a 67 Mustang that was originally an a/c car. I am building it non a/c with the regular heater box and heater hoses going through the two separate small holes in the firewall for this purpose.

    I am left with the large oblong punch out in the firewall that was for the a/c hoses. Does anybody make a rubber grommet to fill this hole? I can't find a listing for it anywhere. Thanks

     

    4/29/2016 7:20 AM  #2

    Bullet Bob
    Senior 24-7 FYI Addict

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    From: Montrose, Colorado
    Registered: 4/01/2013
    Posts: 4,900

    Re: Source for rubber plug to fill a/c firewall opening?

    No plug that I've heard of...I welded mine closed.  Butt (TS&T), you might be able to use the original grommet and two-piece clamp but add a piece of sheet metal that blanks off the grommet.  That way the grommet will seal against the firewall and the sheet metal blank will seal against the grommet....if this makes any sense.

    BB

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    4/29/2016 8:33 AM  #3

    LondonSteve
    FYI Addict

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    From: London, Ontario, Canada
    Registered: 4/01/2013
    Posts: 136

    Re: Source for rubber plug to fill a/c firewall opening?

    Makes sense, but I don't have any of the original a/c parts, the main reason I am going non a/c.

       •Thread Starter
     

    4/29/2016 9:44 AM  #4

    almcgee
    I FYI 24-7

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    From: Fairview, Texas
    Registered: 6/01/2013
    Posts: 783

    Re: Source for rubber plug to fill a/c firewall opening?

    YOU CAN BUY THE A/C GROMMET AND METAL PARTS AT MOST ANY CLASSIC MUSTANG SUPPLIER.

    Mustang Steve Bash in Gruene, Texas September29-30, 2023
     

    4/29/2016 12:10 PM  #5

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,626

    Re: Source for rubber plug to fill a/c firewall opening?

    When you go back to a heater only you end up with the blower motor sticking through the bulk of the hole where the AC stuff went.  You might be able to cut/modify an AC grommet to cover the hole.  Its a clamshell metal deal with a rubber insert.  You could probably just replace the insert with some 1/4" thick rubber. 

    BTW, if you need any heater only stuff for a '67 I've got everything.  I converted my car to factory in dash AC many years ago, but kept the heater parts because they were still good and thought they might do someone some good one day. 

     

     

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