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Old 03-30-2019, 04:05 PM   #1 (permalink)
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Frame patching

Not sure if this is newb tech or more GCC tech worthy.

Getting ready to patch the frame on the wheeling rig Ranger, it sees a decent amount of road time so I'm trying to do my best and looking for criticism. Plan is to trim out the bad, and weld 1/4" plate patches over the outside.

The spot around the leaf spring hanger is getting a 30" long patch to help spread out the load. Both sides already have patches on the inside of the rail from several years ago. Driver side got the old metal cut out when it was patched, passenger side wasn't. So it will be double layered, in and out.

The plan where I need a little direction is where the original shock mounts were. The frame bulges around the rivet holes. On the driver side there's a lot of meat around them to cut them out and use a large patch around the hole. The passenger doesn't have as much room around the bulges. I'm thinking grind the bulges flush with the rest of the frame and plate over it. Thoughts?


1st pic is the passenger leaf spring hanger, 2nd is the passenger shock mount holes, if you look at the lower left, you can see where the frame bumps in over the axle, that's the clearance that I'm concerned with. 3rd is of the driver side shock mounts.


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Last edited by posford; 03-30-2019 at 04:09 PM. Reason: Huge pics
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Old 03-30-2019, 04:46 PM   #2 (permalink)
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Id plate over and where the rivets are Id hole saw holes and plug weld the bump out to the new plate. Id also fish mouth the plates.
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Old 04-01-2019, 08:56 AM   #3 (permalink)
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Id plate over and where the rivets are Id hole saw holes and plug weld the bump out to the new plate. Id also fish mouth the plates.
All of this. I always add a few holes and plug weld anyway when playing a frame.
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Old 04-01-2019, 12:08 PM   #4 (permalink)
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Id plate over and where the rivets are Id hole saw holes and plug weld the bump out to the new plate. Id also fish mouth the plates.
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All of this. I always add a few holes and plug weld anyway when playing a frame.
Ok that's pretty much where I was at. Thanks
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Old 04-02-2019, 04:07 AM   #5 (permalink)
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If you need some perfectly pitted metal so you can say "well clearly it's been passing inspection for many years with that patch there" I have some F250 frame that I've been saving specifically for this kind of thing.

Also, my Ranger has the same holes just below the shock mounts. There's no good reason for that to rust out since nothing collects there. I suspect that it's a weak point that just shows up after 10yr of pounding from the shock so you should probably consider making your patch have a footprint that goes further to that side than just the bare minimum to cover the hole.

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Old 04-02-2019, 09:55 AM   #6 (permalink)
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plate it and speed holes for more weld surface. if you do inside and out side make them different lengths so it spreads the strength out.
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Old 04-02-2019, 10:13 AM   #7 (permalink)
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If you need some perfectly pitted metal so you can say "well clearly it's been passing inspection for many years with that patch there" I have some F250 frame that I've been saving specifically for this kind of thing.

Also, my Ranger has the same holes just below the shock mounts. There's no good reason for that to rust out since nothing collects there. I suspect that it's a weak point that just shows up after 10yr of pounding from the shock so you should probably consider making your patch have a footprint that goes further to that side than just the bare minimum to cover the hole.
Thanks but I'll pass, got a half sheet of 1/4" plate, not worried about the sticker, that's the easy part

Looks like the shock mount collects mud and shit? At least they did. They're cut off now.

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plate it and speed holes for more weld surface. if you do inside and out side make them different lengths so it spreads the strength out.
Attachment 2925498
Hard to have weld surface when there's no metal underneath I'm trying to hide the junk frame while strengthening it
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Old 04-02-2019, 10:19 AM   #8 (permalink)
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Thanks but I'll pass, got a half sheet of 1/4" plate, not worried about the sticker, that's the easy part

Looks like the shock mount collects mud and shit? At least they did. They're cut off now.
I'm talking about the hole outside the perimeter of the mounts. Mine has literally the same hole. No good reason for it to be there unless the mount is making the frame web flex.
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Old 04-02-2019, 10:21 AM   #9 (permalink)
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I'm talking about the hole outside the perimeter of the mounts. Mine has literally the same hole. No good reason for it to be there unless the mount is making the frame web flex.
Yeah true, went back and looked That is pretty fucked up
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