Firewall Hole Plugs
Thread Starter
Racer
Joined: Mar 2008
Posts: 404
Likes: 46
From: Feenicks
Firewall Hole Plugs
I have an 80 C3 and going kinda nuts looking for a rubber plug for a hole in my firewall, the hole is 1 5/8 and its for the cruise control which i removed. I bought a grommet for a C1 that is listed as 1 5/8, but apparently that is the outer dimension of the plug itself. Whats hard is the generic plugs are for 1/16" steel hole, our fiberglass is 1/8, another riddle is some list the plug as the total diameter and some list as the diameter hole its designed to fit.
What did the factory do for non cruise cars? put a plug or just not drill the firewall? I wouldn't mind a grommet as I can use it to run wires or something, but as of now I have a 1 5/8 hole in my firewall with no simple way to plug it.
I checked McMaster Carr, Zip corvettes, Amazon, Ebay ... im outta gas on this. Any ideas ???
What did the factory do for non cruise cars? put a plug or just not drill the firewall? I wouldn't mind a grommet as I can use it to run wires or something, but as of now I have a 1 5/8 hole in my firewall with no simple way to plug it.
I checked McMaster Carr, Zip corvettes, Amazon, Ebay ... im outta gas on this. Any ideas ???
Racer
Joined: Aug 2005
Posts: 355
Likes: 18
From: Corona Ca
I'm hoping your location properly translates to "Phoenix".
If so, have you heard of these guys? Local to me in Corona, and I've used many of their other stores in Orange County.
They may have something you can use.
if you're not in that city, look for an "industrial hardware" shop.
Good luck,
Tom
McFadden-Dale Hardware
4647 South 32nd Street
Phoenix, AZ 85040
info@mcfaddendalehardware.com
Ph: (602) 304-9141
Fax: (602) 304-1145
If so, have you heard of these guys? Local to me in Corona, and I've used many of their other stores in Orange County.
They may have something you can use.
if you're not in that city, look for an "industrial hardware" shop.
Good luck,
Tom
McFadden-Dale Hardware
4647 South 32nd Street
Phoenix, AZ 85040
info@mcfaddendalehardware.com
Ph: (602) 304-9141
Fax: (602) 304-1145
Burning Brakes
Joined: Dec 2008
Posts: 971
Likes: 45
From: Middlesex NJ
Two 3/8" 1-3/4" or 2" fender washers, Black RTV between them, 1-1/2" washer between those washers in the hole of the firewall to keep it centered and a bolt and nylock nut to hold them all together.
Not the prettiest but it works.
Not the prettiest but it works.
Last edited by mysixtynine; Jun 6, 2020 at 08:56 AM.
Thread Starter
Racer
Joined: Mar 2008
Posts: 404
Likes: 46
From: Feenicks
I'm hoping your location properly translates to "Phoenix".
If so, have you heard of these guys? Local to me in Corona, and I've used many of their other stores in Orange County.
They may have something you can use.
if you're not in that city, look for an "industrial hardware" shop.
Good luck,
Tom
McFadden-Dale Hardware
4647 South 32nd Street
Phoenix, AZ 85040
info@mcfaddendalehardware.com
Ph: (602) 304-9141
Fax: (602) 304-1145
If so, have you heard of these guys? Local to me in Corona, and I've used many of their other stores in Orange County.
They may have something you can use.
if you're not in that city, look for an "industrial hardware" shop.
Good luck,
Tom
McFadden-Dale Hardware
4647 South 32nd Street
Phoenix, AZ 85040
info@mcfaddendalehardware.com
Ph: (602) 304-9141
Fax: (602) 304-1145
I thought of rigging something, but I’d like a factory looking grommet or plug. I bought some on eBay that may work, taking the slow boat from China ...
I am surprised 1-5/8 is so hard to find. Simple thing driving me bonkers ...
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Thread Starter
Racer
Joined: Mar 2008
Posts: 404
Likes: 46
From: Feenicks
Case Closed
While it took a long while, my wife actually found a perfect plug ... perhaps someday I’ll fiberglass over it, but she ordered a 41mm plug from eBay, took about a month from Hong Kong to get here but it’s a nice tight fit, looks factory and EPDM rubber, so it should survive ...