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Old 04-17-2016, 12:11 PM
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Chassis CRACK!

OK guys I would like to know if this is common? Changing over to summer tires today and found a rusty mark giving away the location of a chassis crack. It is only on the outside of the chassis....the location is right behind the chassis cross tube in the passenger side front wheelarch. As luck will have it I will have a visit tomorrow from a guy who welds oilfield pipes in Norway. I will have him look at it and advise me (he will probably weld it for me)....Now should I stick a gusset over it as well? or just weld up the has not opened up at all. No idea how or why it has happened? I do some pretty fast wheeling over gravel, forestry tracks, but nothing you could call extreme, no rock crawling etc. (I have had the Jeep just over a year....there is no sign of accident damage now nor when I inspected it...there is no fresh paint covering the crack just manufacturers paint It did go into the shop for a cam belt a few months ago (2011 model CRD sport) some jerk jacking it up in the wrong place maybe??? but why?

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Old 04-17-2016, 12:59 PM   #2
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I would say before you weld it you need to find the cause and then attack it from there. It very well could just be a flaw in the paint. Please update as to what you find.

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Old 04-17-2016, 05:44 PM   #3
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Let's see a picture of this....I've never seen this on a Jk.

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Old 04-17-2016, 05:49 PM   #4
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if it actually is a crack, stop drill it.
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Old 04-17-2016, 07:55 PM   #5

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Originally Posted by Tweak View Post
if it actually is a crack, stop drill it.
^^^You really need to make sure that it is a crack, because this is not normal..

If it is a crack, then drill a small hole just larger than the crack on each end. This will stop the crack from progressing!

Gloving, or Fish Plating, should only be performed by a experienced frame repair shop. Because these frames have to articulate and if repaired to ridged, then they will just crack again!!!
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Old 04-18-2016, 04:03 AM
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Thanks Tweak and old dogger, so long since I had to deal with a crack like this that I had forgotten about stop drilling. The fish plate I was thinking of would only be just big enough to cover the crack. Had to in Eastern Poland there are cars that are held together with angle iron welded along the bottom!!! I will clean the crack and see what it looks like...from the rust is is a crack and not just a paint crack! I can see how it might happen...some fool in the shop puts a jack or lift arm under the (I don,t know what you call it, but the metal frame that looks like it is there to protect the steering bars). Thing is there is no paint taken off that or marks on it as there would be with a jack. This jeep was so damn clean when I inspected it. This Jeep had no history of off road before owner little old lady..(seriously she was a lady doctor in her 30s into hiking...used the jeep to get further up the mountain trails...she definitely did nothing extreme in it)
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Old 04-18-2016, 12:49 PM
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Stop drilled.....then welded along the length of the crack. Will continue to monitor this summer, maybe will then fit a fish plate?? depends on if the crack starts again. Didn,t bother to grind out the crack (This metal is not that thick)....So if it starts again will fish plate it.

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