Boxing Frame neccesary?
Elder User
Joined: Sep 2004
Posts: 863
Likes: 2
From: Grain Valley Mo.
We had an inspection pit at work that was about 3 foot wide and about 20 foot long, and 6 foot deep. It was a short moving line. One guy would stand down there and check everything under the truck as they passed over. I saw a guy drive off into this pit with one front tire. That tire must have dropped 3 feet down into the pit, the other 3 tires were flat on the ground. Imagine the front bumper at normal height on one side, and touching the ground on the other. The frame twisted like a pretzel. I was sure the frame was destroyed as they pulled it out of the pit with a fork lift. To my utter amazement that frame "un-flexed" right back to normal and they drove it off, undamaged, of coarse there was sheetmetal and bumper damage but the frame was fine.....
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XFM......
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XFM......
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Joined: Oct 2004
Posts: 15,882
Likes: 88
From: Durham NC
Originally Posted by xfordman
We had an inspection pit at work that was about 3 foot wide and about 20 foot long, and 6 foot deep. It was a short moving line. One guy would stand down there and check everything under the truck as they passed over. I saw a guy drive off into this pit with one front tire. That tire must have dropped 3 feet down into the pit, the other 3 tires were flat on the ground. Imagine the front bumper at normal height on one side, and touching the ground on the other. The frame twisted like a pretzel. I was sure the frame was destroyed as they pulled it out of the pit with a fork lift. To my utter amazement that frame "un-flexed" right back to normal and they drove it off, undamaged, of coarse there was sheetmetal and bumper damage but the frame was fine.....
________________
XFM......
________________
XFM......
Senior User
Joined: Jan 2004
Posts: 354
Likes: 1
From: australia
hey guys, i would be interested to here kents comments, more to the point is he saying " u don't have to box the front/frame" or is it a case of the ifs will still work, just not as designed?
cya...gary
cya...gary
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Joined: Oct 2004
Posts: 15,882
Likes: 88
From: Durham NC
IMHO I don't see where the frame flexibility is a major issue with the operation of the IFS for street driving. It would only become a factor if you have a major torque monster engine or are going to do competitive drag or road racing.
Posting Guru
Joined: Feb 2002
Posts: 1,392
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From: Michigan
Originally Posted by xfordman
We had an inspection pit at work that was about 3 foot wide and about 20 foot long, and 6 foot deep. It was a short moving line. One guy would stand down there and check everything under the truck as they passed over. I saw a guy drive off into this pit with one front tire. That tire must have dropped 3 feet down into the pit, the other 3 tires were flat on the ground. Imagine the front bumper at normal height on one side, and touching the ground on the other. The frame twisted like a pretzel. I was sure the frame was destroyed as they pulled it out of the pit with a fork lift. To my utter amazement that frame "un-flexed" right back to normal and they drove it off, undamaged, of coarse there was sheetmetal and bumper damage but the frame was fine.....
________________
XFM......
________________
XFM......
Cargo Master
Joined: Apr 2005
Posts: 3,338
Likes: 167
From: Harpswell Maine
My conversation with Kent was short and I did not get into a lengthly discussion. I had explained to him what I planned to do, i.e. put a xj jag front end in a 49 ford F-1 in combination with a lowered 9 inch rear on leaves and I was thinking about just boxing the front (as opposed to full boxing). What had he done in the past and what did he recommend? He said that he had done a number of the early ford pickups but said I didn't need to box the front of the frame. I got the clear impression that he had done this before without boxing the frame. I was surprised at his response. I plan to hook up with him on a future trip to pick up on that point. I have thought about what he said and I agree with AX.
As I indicated in a previous post I have other reasons for boxing the front of my frame and that is what I will do. Right now I am trying to get the right amount of drop on the rear before I set up the front to maintain the xj crossmember dead parallel to the ground. Any help on anyones thought would be great-see the thread on rear axle flip.
As I indicated in a previous post I have other reasons for boxing the front of my frame and that is what I will do. Right now I am trying to get the right amount of drop on the rear before I set up the front to maintain the xj crossmember dead parallel to the ground. Any help on anyones thought would be great-see the thread on rear axle flip.
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