Plugging firewall holes?
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Fleet Mechanic
Joined: Jul 2004
Posts: 1,988
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From: Travelers Rest SC
Plugging firewall holes?
Having deleted the factory A/C, I now have several holes in the firewall to plug. There's a large fitting at the top in the center that the refrigerant lines went through. I can make a solid insert to plug that. There are also two 1-1/4" diameter holes down low where the heater hoses went through. Their location is different than the non-A/C holes, which had rubber plugs in them. Too bad they're not big enough to plug the old holes. Any ideas on where to get a rubber plug/grommet to fill those holes? I'd rather not weld then up, at least not now. I'm looking for something more permanent and attractive than duct tape.
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Fleet Mechanic
Joined: Jul 2004
Posts: 1,988
Likes: 14
From: Travelers Rest SC
There's very little left of it, other than the huge housing from the cab. No compressor, no lines, no controls, and what's left of the in-cab part doesn't look functional.
Cross-Country
Joined: Apr 2017
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Laughing Gas
Joined: Feb 2016
Posts: 1,052
Likes: 102
From: The Hotel California
FLgargoyle i had the same problem with my 67 Mustang. it was a factory ac car, but i don,t have any ac parts. i went to my local hardware store and i went to the plumbing section. they have solid rubber plugs that have a bolt and nut that goes thru the center of them. find one close to the size of the hole you want to fill and tighten the bolt/nut. some auto parts store might also have the same thing.
Laughing Gas
Joined: Nov 2001
Posts: 1,062
Likes: 78
From: Edmonton, Alberta
I'm assuming you want to plug them without doing any welding??
After carefully measuring the inside diameter of the holes, find yourself a good industrial supply and ask them for Blind Grommets.............
If you have no success finding them locally, you can probably order them online, but may end up with more than you need.
James
After carefully measuring the inside diameter of the holes, find yourself a good industrial supply and ask them for Blind Grommets.............
If you have no success finding them locally, you can probably order them online, but may end up with more than you need.
James
Logistics Pro
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From: Antelope Valley ,CA
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Logistics Pro
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From: Lind, WA- Eastern WA
Thanks for sharing that info "Mikes 68 F100". I tried to rep you for it, But I got the msg that I have to spread it around more, before I can rep you again.
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Fleet Mechanic
Joined: May 2001
Posts: 1,396
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From: Cupertino
How about two circular discs of plywood, one inside and one out, with a bolt through the center to clamp.
Toothless Jake fix.
Toothless Jake fix.
Last edited by CougarJohn; Sep 21, 2018 at 09:10 PM. Reason: typo
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
How about a rubber plug? Kinda like one of the ones below. Part number 389114-S is still available
from Ford. They don't list the hole size. But at 1 3/4" O.D. I think that might work. I don't have one in stock here to measure.
from Ford. They don't list the hole size. But at 1 3/4" O.D. I think that might work. I don't have one in stock here to measure.
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