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Unread 11-30-2015, 11:02 PM   #1
szfofa
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Frame Stiffener Question Regarding Rust

Recently got an XJ and decided that I do want some frame stiffeners on there. Ive read a bit about how to prep to weld them on, but something I havent fully understood is how to prevent rust. I also read about weld primer paint but does that really work? wont welding make the weld primer burn off and purpose defeated? I know you can paint the actual stiffener after but I am talking about between the frame and stiffener. Does anyone have any experience?

Thanks in advance!

Also, anyone in greater Phoenix area interested in the project?

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Unread 12-01-2015, 12:18 PM   #2
PhulesAu
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Ok, I gotta ask.... Is rust a problem in Phoenix?
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Unread 12-01-2015, 12:28 PM   #3
szfofa
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No, rust is not a problem in Phoenix. That doesn't mean if I drive to a snowy region that it can't be problem. I am moving back to California soon and the 395 is a great part of the state. People think CA doesn't use salt but they are mistaken. http://www.dot.ca.gov/hq/paffairs/ne...el/14pr019.htm
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Unread 12-01-2015, 01:00 PM   #4
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Quote:
Originally Posted by szfofa View Post
Recently got an XJ and decided that I do want some frame stiffeners on there. Ive read a bit about how to prep to weld them on, but something I havent fully understood is how to prevent rust. I also read about weld primer paint but does that really work? wont welding make the weld primer burn off and purpose defeated? I know you can paint the actual stiffener after but I am talking about between the frame and stiffener. Does anyone have any experience?

Thanks in advance!

Also, anyone in greater Phoenix area interested in the project?
I live in the great midwest salt belt and love to play in the snow so fight a continual battle keeping the undercarriage rust at bay. After much contemplation of the exact same concerns I opted to forgo the stiffners until I came across a good plan.
I'm all ears.
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Unread 12-01-2015, 02:16 PM   #5
PhulesAu
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Do you have a link to what these stiffeners look like? Might be able to throw a useful idea out there.
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Unread 12-01-2015, 02:56 PM   #6
chris87xj
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There's several different versions and manufacturers, but here's a look IRO's Iron Rock Offroad and H. D. Offroad.
Basically it's a second skin to beef up the uni-rails and attached by dozens of spot welds. You can't really get a good angle to weld the entire top end. The resulting salt entrapment areas concern me as I'm already having floorboard rust issues everywhere my undercoating has been scratched through.

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Unread 12-01-2015, 03:35 PM   #7
szfofa
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Thanks for posting that up Chris.

I've also heard that you wouldn't want to weld the entire seam anyway because it weakens the rail too much.
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Unread 12-04-2015, 04:46 PM   #8
ChiliPalmer
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Add some seam sealer after it's fully welded then cover with bed liner.

http://www.eastwood.com/autobody/seam-sealer.html
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Unread 12-06-2015, 07:24 PM   #9
dbmetalworx
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Originally Posted by szfofa View Post
Thanks for posting that up Chris.

I've also heard that you wouldn't want to weld the entire seam anyway because it weakens the rail too much.
feel free to give me call monday. we're in buckeye.. we can get you dialed in.. 623-694-1280 dbmetalworx.com
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Unread 12-11-2015, 11:07 AM   #10
szfofa
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Thanks for the link to that seam sealer! looks like good stuff. I just discovered a t-case leak so looks like I need to handle that now first. Ill keep you in mind when I get the stiffeners, Thanks!
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