CK5
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Dun dun dun ...

View attachment 342565 View attachment 342564 So I just got a chance to climb under my rig after a trip to FORDYCE creek here in CA only to find I had cracked the frame where I did my four link conversion super bummed . Anyone else have this issue ... ?

any good fix ideas ?
Is the the inner link bracket on the other side of the frame, at the same location? Is there a cross member for the inner link at that location? Is it possible cross member could it be bent in the middle?
 
Is the the inner link bracket on the other side of the frame, at the same location? Is there a cross member for the inner link at that location? Is it possible cross member could it be bent in the middle?
Yes same place , there’s no cross member other than the stock one in the back .
 
As I sit here and think about it I may have caused this , hard to explain but I’ll try , basically where the link brackets are welded I welded a plate on the back side of the frame and the brackets to box them , but when doing so I believe it fatigued the metal and caused the crack with all the flex,torque and so on.
 
I have a frame from an 86 but getting it to you would be the hard part
 
Don’t forget to consider force from the front. It may have failed there because the link stopped it.

Also, if the frame is bowed inward, what did it do to that body mount?

leaning this way too....found a lot of this working on 18 wheelers and trailers...the more you tried to stop something from flexing, the stresses would just transfer to the point just beyond where all the stiffening was done.
that becomes the new flex point and boom.

think of it this way......if you are trying to dissipate flex stresses, would you do it over a longer or shorter piece of material?
 
leaning this way too....found a lot of this working on 18 wheelers and trailers...the more you tried to stop something from flexing, the stresses would just transfer to the point just beyond where all the stiffening was done.
that becomes the new flex point and boom.

think of it this way......if you are trying to dissipate flex stresses, would you do it over a longer or shorter piece of material?
Longer of course so you saying bulk the whole frame not just in the affected area correct?
 
Longer of course so you saying bulk the whole frame not just in the affected area correct?

yup,,,,after determining what caused the flex or torque in the first place...can't have one portion of the frame flexy and another one stiff ....

either it needs to flex (twist ) end to end....
or be a solid platform---frame, cage, crossmembers.. and let the suspension and links do their job.

have you looked to see if you have any loose rivits or bolts on the front crossmembers?
 
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