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Old 04-20-2019, 09:12 AM   #1
Arty
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Default Body & Frame Connection

I have a 31 coupe that I purchased partially completed. All the body blocks and connections are aligned, except for one. The mount at the front of the door only hits one of the frame mount holes. It seems the body block is bolted to the body correctly, but the two bolts do not align with the frame mount. Hopefully the pictures will better explain the issue.


Any help appreciated.
Attached Images
File Type: jpg Frame body mount 1.jpg (32.3 KB, 175 views)
File Type: jpg Fraem body mount 2.jpg (58.6 KB, 181 views)
File Type: jpg Frame body mount.jpg (63.1 KB, 164 views)
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Old 04-20-2019, 09:40 AM   #2
duke36
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Default Re: Body & Frame Connection

other side comparison?
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Old 04-20-2019, 09:49 AM   #3
rocket1
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Default Re: Body & Frame Connection

It seems the distance between the bolts would be correct for the frame mount,I guess you don't have the old one,possibly someone on the barn could check out their car to help solve the problem.
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Old 04-20-2019, 10:25 AM   #4
Bob C
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Default Re: Body & Frame Connection

That is the way it should be for your car. From the Standards "The #3 body bolt attached at the front hole of the cowl support bracket and the #2 body bolt attached only through the running board shield".


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Old 04-20-2019, 10:39 AM   #5
Steve Plucker
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Default Re: Body & Frame Connection

Arty,

Here is the problem...You either have the wrong frame for your body OR the wrong body for your frame!

(You have a later frame than you do for your body)

Please look at this article and refer to Fig. 18.

http://plucks329s.org/pdf/frame/Evol..._Assembly2.pdf

Either get the right frame for your project OR move the front body mount forward so BOTH carriage bolts, left and right, match the assembly of the carriage bolt holes in the bracket. I would think you need BOTH carriage bolts to mate to the bracket properly to get good body/frame alignment and stabilization.

Although during the transsion period, you might get something like this that you have as stated by Bob C above.
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Last edited by Steve Plucker; 04-20-2019 at 02:54 PM.
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Old 04-20-2019, 02:24 PM   #6
Dennis Pereira
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Default Re: Body & Frame Connection

This is more of a question than an answer . But I think your body needs to move back one hole ?
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Old 04-20-2019, 03:45 PM   #7
Fwilkinson
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Default Re: Body & Frame Connection

I Have a 1931 roadster and a 1931 coupe. Both of them have the exact same blocks and body bolts as yours. The one hole on the frame is not used on the coupe or roadster body mounting. Both of my cars were never separated from the frame when I bought them.
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Old 04-20-2019, 09:39 PM   #8
Bill Cilker
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Default Re: Body & Frame Connection

According to the Restoration Guidelines, the cowl body bracket was moved back 2-3/8" on all frames in November 1930 to accommodate the Victoria and Slant window bodies. That is why you can only get one bolt in. Your frame is correct for all 1931 vehicles.
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Old 04-21-2019, 07:58 AM   #9
Steve Plucker
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Default Re: Body & Frame Connection

So guys, educate me here...are you saying that all 1931 Model A bodies fit on all 1931 frames/chassis as Arty's above with no exceptions?

Thanks.

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Old 04-21-2019, 12:08 PM   #10
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Default Re: Body & Frame Connection

I currently have the body off my late '31 coupe. You can see from the pictures that the wood block sat squarely on the frame bracket with both holes matching up with the holes in the bracket.
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File Type: jpg MPT_8985 (Custom).jpg (102.1 KB, 76 views)
File Type: jpg MPT_8986 (Custom).jpg (104.0 KB, 61 views)

Last edited by MickeyT; 04-22-2019 at 06:04 AM.
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Old 04-22-2019, 09:58 AM   #11
Burgamot
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Default Re: Body & Frame Connection

I am working on a late 31 fordor and having the same problem. When i was taking body off the frame i noticed only one bole in the cowl bracket had a bolt. when i had the body off i checked all the bolt hole locations against dimentions for a 30-31 tudor they matched up except for the two holes in the cowl. only one lined up. everything else did fit. what i did was to weld a angle iron ahead if the bracket. appears steve and bill were correct that the late frames were made for other bodies.did i do the right thing in adding another attach point or left it alone? (I tried to attach a photo of what i did but with my limited computer skill could not do it)
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Old 04-22-2019, 10:15 AM   #12
duke36
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Default Re: Body & Frame Connection

The Jan/Feb 1998 issue of the Restorer Magazine had drawings for body blocks locations, etc. (I don't have the coupe info, only the 4 doors.)
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Old 05-07-2019, 07:40 AM   #13
Arty
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Default Re: Body & Frame Connection

A late thank you, but much appreciated feedback from The Barn. I plan to removed the existing bracket and rivet it back to the frame 2 3/4" forward.

Much appreciated - Arty
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Old 05-07-2019, 10:43 AM   #14
Bob C
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Default Re: Body & Frame Connection

Why would you move the bracket when it is in the correct location now, see
posts 4,7 and 8.


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