 Front End Bracing |
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| 57lincolnman |
 Aug 17 2013, 08:41 PM
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#1
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Member  Group: Members Posts: 174 Joined: 14-September 10 From: Los Angeles Member No.: 12,175 Region Association: Southern California  |
My 75 has a dealer installed a/c unit. The lower pan in the front trunk was cut out years ago by the dealer. Has anyone tried to fabricate cross bracing to tighten the front end? I think the structural integrity of the unibody was compromised by this "dealer authorized" surgical procedure. Interested in your thoughts. Thanks.
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| 57lincolnman |
Aug 18 2013, 10:24 AM
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#2
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Member Group: Members Posts: 174 Joined: 14-September 10 From: Los Angeles Member No.: 12,175 Region Association: Southern California |
I have invested quite a bit to have working a/c, so I want to keep that. I've thought about welding in some "x" cross-bracing just above a/c unit to get some rigidity back. With a uni-body it seems to me that this floor pan acts as a diaphragm to resist some torsional forces between the box beams.
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| ChrisFoley |
Aug 18 2013, 04:44 PM
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#3
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I am Tangerine Racing Group: Members Posts: 8,006 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None 
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QUOTE(57lincolnman @ Aug 18 2013, 11:24 AM)  I have invested quite a bit to have working a/c, so I want to keep that. I've thought about welding in some "x" cross-bracing just above a/c unit to get some rigidity back. With a uni-body it seems to me that this floor pan acts as a diaphragm to resist some torsional forces between the box beams. THe biggest loads at the front mounts are twisting forces from stock rubber bushings or tight polygraphite bushings binding. There are no loads transfered from the torsion bars through the front mounts, and the side loading from cornering is much smaller at the front than at the rear. |
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Posts in this topic
57lincolnman Front End Bracing Aug 17 2013, 08:41 PM
messix if it's just the sheet metal behind the front ... Aug 17 2013, 08:50 PM
57lincolnman
if it's just the sheet metal behind the front... Aug 17 2013, 08:57 PM 57lincolnman
if it's just the sheet metal behind the front... Aug 17 2013, 08:59 PM
messix
if it's just the sheet metal behind the fron... Aug 17 2013, 09:22 PM SirAndy it should be ok.
I dis-agree ...
I think any cut... Aug 17 2013, 09:42 PM messix I think the only forces put on that section is hor... Aug 17 2013, 09:56 PM FourBlades Restoration Design just started making a perfect p... Aug 17 2013, 10:01 PM messix
Restoration Design just started making a perfect ... Aug 17 2013, 10:05 PM FourBlades
Restoration Design just started making a perfect... Aug 17 2013, 10:08 PM messix I just went out to put my '75 back in the gara... Aug 17 2013, 10:24 PM Racer Chris
...if it's just a street car I don't thin... Aug 18 2013, 07:38 AM 914Sixer Yes, 75-76 do have a little more structure to them... Aug 18 2013, 06:44 AM jimkelly comparision Aug 18 2013, 06:57 AM rhodyguy cracks can result that run towards the front contr... Aug 18 2013, 08:27 AM zambezi Heres what I did. Not sure if it added any struct... Aug 18 2013, 11:54 AM Larry Hubby If you've ever looked at the floor of the fron... Aug 18 2013, 06:01 PM sean_v8_914 if anyone has evidence of stresses in this area, p... Aug 18 2013, 07:58 PM Krieger When I started to take my 75, that had A/C, apart ... Aug 18 2013, 08:25 PM Racer Chris This car had the full trunk floor intact.
Cracks o... Aug 19 2013, 07:37 AM Eric_Shea :agree: I've seen pictures of a bad bushing li... Aug 19 2013, 08:56 AM sean_v8_914 right along th spot weld line Aug 19 2013, 10:27 AM |
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