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Old 01-09-2021, 08:33 AM   #1
Gigantor
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Question Model A Beltline Variations?

Howdy - I did a search and nothing popped up, hoping you can shed some light on this.

I recently picked up a salvageable pair of Sport Coupe quarter panels to use as donor metal for my rough 30 Coupe rear quarters. As I was hammering out dents and fixing tears tonight, I kept looking at the beltline on my quarters and the beltline on my donor quarters and finally took a caliper to them to tell me what I already could see with the naked eye:

The Sport Coupe quarter panel beltline is 1/4" thicker than my Coupe belt line. The Sport Coupe belt line measures 1 inch. The coupe panels belt line measure .75" That's a HUGE difference.

Were tolerances that varied? Do I have the wrong year sport coupe quarters? Is this the difference between a Briggs and Murray body? What the hell is going on? Help!

p.s. I now need donor metal for my coupe with the correct belt line. Who wants to buy some sport coupe quarter panels? FML.
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Old 01-09-2021, 09:18 AM   #2
Mike Peters
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Default Re: Model A Beltline Variations?

Correct me if I'm wrong, but aren't '30 sport coupe doors the same as '30 coupe doors? If so, then the belt line should match at the juncture of the door and rear quarter panels??
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Old 01-09-2021, 09:55 AM   #3
Gigantor
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Default Re: Model A Beltline Variations?

It should match, I thought. But side by side the belt line on my car is 1/4" narrower than the belt line on these sport coupe fenders I have. I'll try to take a picture.
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Old 01-09-2021, 10:00 AM   #4
Oldbluoval
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Default Re: Model A Beltline Variations?

The doors are the same
So something else is wrong with all this
Sure you’re not mixing up 28-29 and 30-31?
Belt rails do have different shape so should be evident
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Old 01-09-2021, 11:43 AM   #5
jb-ob
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Default Re: Model A Beltline Variations?

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Just to muddy things further, 30-31 coupe & roadster fenders are considered the same, probably with the same tail lamp mounting holes.

When pin striping a roadster I can get my hand around & behind the tail lamp bracket. Not so with a coupe.

Your mileage may vary.
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