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Old 11-26-2013, 02:16 PM   #1
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Getting rust out of the frame

Hi all. I have a 99 TJ and I need some help/advice on a minor frame issue. As you all know the frames start to rust from the inside so I want to get in there and remove some larger pieces that have flaked off and coat with POR 15.

My thought was to cut out the lower section of the frame, coat with POR 15, and have a welder sew it back together. I brought to a welder and he said there's plenty of life left in the frame and I should leave it alone...but I can't! The body, interior, and motor are all solid...and so is the frame for the most part.

Any suggestions would be greatly appreciated!

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Old 11-26-2013, 04:23 PM   #2
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Just my opinion, but If your welder says it's ok, you might be overreacting. I can't see going to the trouble of cutting the frame open & then having to pay him to weld it back up. If it's not bad enough to require a patch, I wouldn't mess with it.

How about something like this? You could drill a hole in the frame near the spot you're worried about & give it a good dose of this stuff. I've never used it, but others have & said it works great.

Internal Frame Coating w/Spray Nozzle | Eastwood

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Old 11-26-2013, 08:23 PM   #3
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On mine i have a magnet tied to a stiff piece of wire that i slide down inside the frame thru the larger holes and pull the rust out that way. I have had to do this a few times. I had some larger pieces that wouldn't fit thru the holes but i could stick my finger inside the frame and break them into smaller pieces.
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Old 11-27-2013, 04:30 AM   #4
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Quote:
Originally Posted by rockytj View Post
On mine i have a magnet tied to a stiff piece of wire that i slide down inside the frame thru the larger holes and pull the rust out that way. I have had to do this a few times. I had some larger pieces that wouldn't fit thru the holes but i could stick my finger inside the frame and break them into smaller pieces.
Thanks RockyTJ. Have you treated the inside of the frame?
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Old 11-27-2013, 12:17 PM   #5
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I used Eastwood's Internal Frame Coating.
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Old 12-06-2013, 07:59 PM   #6
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I used Eastwood's Internal Frame Coating.
I ordered some Eastwoods and planned on coating the inside of my 99 frame. While reaching around inside I was able to peel chunks off. Not sure if it's it spraying or if I need to visit a welder.
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Old 12-06-2013, 08:03 PM   #7
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is it wise to drill small holes on the under side of the frame to help drainage?
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Old 12-06-2013, 08:11 PM   #8
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is it wise to drill small holes on the under side of the frame to help drainage?
I'm not comfortable with drilling holes in the frame. Besides, they'd have to be big holes to get the pieces out.
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Old 12-06-2013, 09:11 PM   #9
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Quote:
Originally Posted by Philmycrackin View Post
is it wise to drill small holes on the under side of the frame to help drainage?
Drainage holes should have been done by the factory but they didn't. A few holes for water drainage is not going to do anything but help. Do it after using eastwoods in the frame and then spray the holes again so rust doesn't start.
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Old 12-07-2013, 04:04 AM   #10
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Drainage holes should have been done by the factory but they didn't. A few holes for water drainage is not going to do anything but help. Do it after using eastwoods in the frame and then spray the holes again so rust doesn't start.
What good will Eastwoods do if there are loose chunks like these that I can't reach and pull out? I know it's made to apply over rust but this is more than surface rust. Thanks.
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Old 12-08-2013, 03:50 PM   #11
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Do the hammer test on your frame if you're worried about your frame, and/or post pics...If I were doing this I'd probably use Penetrol with the same kind of nozzle the Eastwood kit comes with. Penetrol would likely seep through or around any debris to get to the frame (try to clean it out first anyway), but the Eastwood stuff probably will too. It's colorless, but looks like rubber cement when it's dry. Obligatory web link - The Flood Company Australia » Anti Corrosion Products » penetrol-anti_rust
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Old 12-08-2013, 04:02 PM   #12
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Do the hammer test on your frame if you're worried about your frame, and/or post pics...If I were doing this I'd probably use Penetrol with the same kind of nozzle the Eastwood kit comes with. Penetrol would likely seep through or around any debris to get to the frame (try to clean it out first anyway), but the Eastwood stuff probably will too. It's colorless, but looks like rubber cement when it's dry. Obligatory web link - The Flood Company Australia » Anti Corrosion Products » penetrol-anti_rust
Thanks for the response. I've never heard of the hammer test. Tell me more! Thanks.
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Old 12-09-2013, 08:57 PM   #13
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The hammer test I was referring to is where you take a ball peen hammer and smack the frame with it. Don't go nuts, you don't want to dent it. Normally, it'll bounce right off, and make a ringing noise. If your frame is weak, it'll sound flat or you'll put a hole in it. How rusted is your Jeep elsewhere? Your pictures make it look like it's in very good shape - touch up the bracket weld areas with some corrosion paint or Penetrol, and brush the hard lines (brakes, fuel, evap, etc.) with Penetrol. Fluid Film is another good product to have around – I use it on the mirror stems, door and hood hinges, bolt heads/threads, battery connections, and anywhere I don't want to risk coating permanently. They make a frame spraying attachment for their product as well. Good luck with the Eastwoods, be sure to update this thread with your experience.
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Old 01-02-2014, 09:00 PM   #14
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The hammer test I was referring to is where you take a ball peen hammer and smack the frame with it. Don't go nuts, you don't want to dent it. Normally, it'll bounce right off, and make a ringing noise. If your frame is weak, it'll sound flat or you'll put a hole in it. How rusted is your Jeep elsewhere? Your pictures make it look like it's in very good shape - touch up the bracket weld areas with some corrosion paint or Penetrol, and brush the hard lines (brakes, fuel, evap, etc.) with Penetrol. Fluid Film is another good product to have around – I use it on the mirror stems, door and hood hinges, bolt heads/threads, battery connections, and anywhere I don't want to risk coating permanently. They make a frame spraying attachment for their product as well. Good luck with the Eastwoods, be sure to update this thread with your experience.
Finally have some time to pick back up on this project. Attached are a couple of photos. You can see the rust starting to poke through where the control arm mount is welded to the frame. There is no way I can get all the rust chunks out so I'm not sure if Eastwoods will do me much good.
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Old 01-06-2014, 05:25 PM   #15
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I drilled one inch holes in the bottom of my frame. I used a pressure washer and got alot of rust debris out that way. Also an air gun and alot of patience. I am taking the body off the frame this spring and going through it from front to back. There are a couple of areas that need addressing.
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Old 01-06-2014, 07:21 PM   #16
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I made some 9"-12" "tools"out of coat hangers by bending them to fit my needs.If the rust piece was too big I would break it up with needle nose plyers etc .Some pcs I could pull out the drain holes I drilled.Some pcs I could vacumn out---- and yes some I even washed out.But I have spent hours this summers on a creeper cleaning out the rust.I have already had the skid plate area repaired.And of course I have coated the inside with Eastwood internal frame coating.May not prevent frame repair at some point in time but no question it has bought some good strength frame use.I'm keeping my eyes open foe a good used frame that I could at some point in time use as a replacement.That way I could take my time preparing it before use.I have a good dry storage place to keep it.Good Luck to all jeep frame "messes".

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