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Quarter Panel Stress Cracks---69 Coronet 500 conv. #952258
03/16/11 09:42 PM 03/16/11 09:42 PM
Joined: Feb 2008
Posts: 11
Tennessee
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Chatt69chgr Offline OP
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Chatt69chgr  Offline OP
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Tennessee
Has anyone ever heard of stress cracks in relation to the quarter panels on a 68-70 b-body convertible. If so, educate me on this subject.
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: Chatt69chgr] #952259
03/16/11 11:50 PM 03/16/11 11:50 PM
Joined: Aug 2003
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Northern Pa
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GLR Offline
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Well, I have restored a couple B-body convertibles and parted out a few. The stress cracks that I saw on the cars that I had were;
1. on the front/top edge of the quarter panel by the quarter window
2. the leaded seam between the dutchman panel to the where it attaches to the quarter panel.
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: GLR] #952260
03/17/11 01:17 AM 03/17/11 01:17 AM
Joined: Jan 2004
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Today? Who Knows?
1_WILD_RT Offline
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Quote:

Well, I have restored a couple B-body convertibles and parted out a few. The stress cracks that I saw on the cars that I had were;
1. on the front/top edge of the quarter panel by the quarter window
2. the leaded seam between the dutchman panel to the where it attaches to the quarter panel.



Mine had both of those...

"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: 1_WILD_RT] #952261
03/17/11 01:40 AM 03/17/11 01:40 AM
Joined: Mar 2010
Posts: 168
Iowa
TX9AAR Offline
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TX9AAR  Offline
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Iowa
My Coronet has the crack between the dutchman panel and quarters.
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: TX9AAR] #952262
03/17/11 02:03 AM 03/17/11 02:03 AM
Joined: Mar 2004
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Harlan, Iowa
69CoronetRT Offline
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right.....HERE!

6534152-Rear_Circle.jpg (91 downloads)
Seeking:

1969 St. Louis plant VINs, SPD, and VONs.
Over 2,000 thanks to you!
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: 69CoronetRT] #952263
03/17/11 01:34 PM 03/17/11 01:34 PM
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Posts: 11
Tennessee
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Chatt69chgr Offline OP
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Tennessee
Thanks for the replies folks. This was the info I was looking for.
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: Chatt69chgr] #952264
03/17/11 02:47 PM 03/17/11 02:47 PM
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471Magnum Offline
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If you've got a B-body convertible, you've probably got these cracks. Very common.

-Jim

I can fix it... my old man is a television repairman.
He's got the ultimate set of tools... I can fix it.

Currently Mopar-less
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: Chatt69chgr] #952265
03/17/11 02:52 PM 03/17/11 02:52 PM
Joined: Mar 2007
Posts: 3,278
West Coast, USA
jbc426 Offline
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My little '68 a-body has them too. US Cartool subframe connectors help lots.

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: jbc426] #952266
03/17/11 03:26 PM 03/17/11 03:26 PM
Joined: Jan 2003
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A collage of whims
topside Offline
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A collage of whims
They're not unusual to find on the hardtops, at the junction of the quarter panel and the lock pillar (door jamb) at the top.
I've also seen several bubbles/blisters at the top of the cowl on '68-'69 Bs near the A-pillar, that are apparently a reaction of lead filler under the paint.
There was also a problem with the rear shock crossmembers tearing away from the trunk floors on some cars, had a '68 like that.
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: topside] #952267
03/17/11 04:07 PM 03/17/11 04:07 PM
Joined: Jan 2003
Posts: 75,015
U.S.S.A.
JohnRR Offline
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Quote:


There was also a problem with the rear shock crossmembers tearing away from the trunk floors on some cars, had a '68 like that.



I've only ever seen or heard of that on cars that had air shocks , the shock crossmember was not designed to support the weight of the rear of the car 24/7.
Re: Quarter Panel Stress Cracks---69 Coronet 500 conv. [Re: JohnRR] #952268
03/17/11 05:45 PM 03/17/11 05:45 PM
Joined: Jul 2005
Posts: 1,499
Slidell, LA
Plum440 Offline
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Slidell, LA
Yeap. My dad's '69 GTX vert has them as well.

70 Challenger, 440, 4-speed, pLuM cRaZy
71 VW Super Beetle Convertible, Lemon Yellow
A couple of Jeeps…

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