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Boxing a frame

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Old Jul 12, 2007 | 09:00 PM
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Question Boxing a frame

Restoring a 51 F1, mustang II IFS , 460 engine.
Boxing the frame for front suspension, what are the thoughts on boxing the entire frame??
 
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Old Jul 12, 2007 | 09:12 PM
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if you use an IRS also, then it wouldn't be a bad idea. if using leafs in the rear, then I wouldn't. There's reasons why, but it's a lengthy discussion.
 
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Old Jul 13, 2007 | 10:38 AM
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Frame boxing...yes? no?

Havi,
Some of us in the midst of our builds on F1 trucks would probably benefit greatly from your thoughts on when to box, and when to not. Maybe a whole new thread on the subject would be worth the time?? Thanks...

Bob in Spokane
 
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Old Jul 13, 2007 | 01:56 PM
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Originally Posted by robertr
Havi,
Some of us in the midst of our builds on F1 trucks would probably benefit greatly from your thoughts on when to box, and when to not. Maybe a whole new thread on the subject would be worth the time?? Thanks...

Bob in Spokane
Bob,

In a few words, my understanding is that the original frame is designed to flex with the leaf spring setup. An IFS or IRS doesn't need the flex so stiffening the frame will make it work better. So basically, box an IFS/IRS frame but don't box a parallel leaf spring setup or straight axle.
 
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Old Jul 13, 2007 | 02:29 PM
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Originally Posted by 51fordfan
what are the thoughts on boxing the entire frame??
The effort does not justify the end result. Lots of welding and grinding and added weight without any real, tangible benefit. IMHO
 
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Old Jul 13, 2007 | 05:26 PM
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Vern summed it up pretty well. To add a bit, a 460 putting torque to the rear will cause a "twist" in force to the rear axle. With a solid axle on leafs, it could pull one tire off the ground or atleast break them loose and send the rear sideway a bit.....the flexy frame alleviates that by allowing the tires to stay in contact. A boxed frame will more than likely increase the chance of pulling a tire up and off the surface, or atleast on the outside edge of the tire. The IRS would keep the tire tread in full contact (even if it's only one tire, he he) thus increasing traction and a quicker launch. There's also axle wrap, and other things, but that's kinda the jist of it. BTW, I'm no expert on this per se, but "HOT ROD" magazine had some articles on this a short few years ago.
 
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Old Jul 14, 2007 | 09:19 PM
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here's the other side of the coin, based on my experience, just do it, end-to-end
 
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Old Jul 15, 2007 | 07:15 AM
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If you decide to box the front only, be sure to > the boxing plate where it ends. In other words, don't stop the plate vertical. That releaves the stress where the boxing ends. I hope that made sense. Rod....
 
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Old Jul 16, 2007 | 10:07 PM
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boxing a frame

Thanks for all the input, we've made quite a bit of progress over the weekend.
....Havi could you refer me to what issues (i have a few years of copies) would like to read the article.
will keep all posted on the progress
 
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Old Jul 16, 2007 | 10:36 PM
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Boy, IIRC it was 1998. I pulled the articles that interested me, and tossed the rest. I can look, but it may take a couple days...everything is boxed up for the move.
 
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