What are these holes in the firewall for?

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RonGlowczewski
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What are these holes in the firewall for?

Post by RonGlowczewski » Sat Jan 28, 2023 2:48 pm

The firewall that came with my stripped chassis is a reproduction and I am looking to buy an original firewall. I have no idea what these 2 holes are for on the passenger side. Can anyone tell me? 1925 Roadster.
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23ford
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Re: What are these holes in the firewall for?

Post by 23ford » Sat Jan 28, 2023 3:10 pm

choke rod adjustment for carb


speedytinc
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Re: What are these holes in the firewall for?

Post by speedytinc » Sat Jan 28, 2023 3:33 pm

The 25's used the same choke/mixture single control rod as the improved T's. Before this the choke rod was much further up on the F/W attached to a riveted on bell crank. So, I can confirm what it is not, but not what it is. This looks like a job for Original Smith.

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Rich Eagle
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Re: What are these holes in the firewall for?

Post by Rich Eagle » Sat Jan 28, 2023 4:11 pm

Some of the photos here might help.
https://www.mtfca.com/discus/messages/7 ... 1506901129
When did I do that?

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Humblej
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Re: What are these holes in the firewall for?

Post by Humblej » Sat Jan 28, 2023 4:17 pm

Might vary by year, not Ford supplied holes as far as I know.
firewall.jpg
Last edited by Humblej on Sat Jan 28, 2023 4:20 pm, edited 1 time in total.


Dan Hatch
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Re: What are these holes in the firewall for?

Post by Dan Hatch » Sat Jan 28, 2023 4:20 pm

Late 25 or 26/27 TT.


speedytinc
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Re: What are these holes in the firewall for?

Post by speedytinc » Sat Jan 28, 2023 4:28 pm

Rich posted pictures that are instructive. I cant tell for sure, but, that hole could be for the single mixture/choke rod.
The firewall has the earlier separate choke bell crank & mixture holes also. Transition?
Humble J's looks to be a 24, early 25? style F/W with the separate controls.

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Oldav8tor
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Re: What are these holes in the firewall for?

Post by Oldav8tor » Sat Jan 28, 2023 6:08 pm

might someone have routed a speedometer cable thru one?
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su8pack1
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Re: What are these holes in the firewall for?

Post by su8pack1 » Sat Jan 28, 2023 8:45 pm

This is my 1925 roadster I picked up last fall. Engine # puts it the first few days of May 1925. From what I've read the late 25 to 26/27 used the choke rod without the bell crank similar to the later Model A setup. On mine I think someone tried to convert it to the newer setup as the bottom hole was enlarged and the choke rod has a section welded on and the end squared up to fit the u-joint setup (choke rod sleeve and wire were missing). I'm in the process of putting it back to the bell crank style. Just waiting on some parts now.
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RonGlowczewski
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Re: What are these holes in the firewall for?

Post by RonGlowczewski » Sun Jan 29, 2023 12:15 am

Thanks for the information!

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Humblej
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Re: What are these holes in the firewall for?

Post by Humblej » Tue Feb 07, 2023 9:29 pm

Update, and more mystery. I checked my unrestored 1924 roadster firewall and it has those 2 holes with nothing going thru them. My choke and mixture go thru other holes in the firewall and spedo cable goes thru the floorboard. The floorboard has a relief area to clear the holes.
firewall1.jpg
Last edited by Humblej on Thu Feb 09, 2023 7:14 pm, edited 1 time in total.


Original Smith
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Re: What are these holes in the firewall for?

Post by Original Smith » Wed Feb 08, 2023 10:34 am

The rust makes it difficult to identify. Does that firewall have four holes for the patent plate or two? Two is a 1925. Late 1925 firewalls have no bell crank for the carburetor, but the two holes for it are still there.

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