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Old 11-14-2011, 09:37 AM   #1
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POR 15 inside of my frame help

The other day I was giving my jeep some much needed attention and found chunks of rust inside the frame. Without doing a full frame off, what can I do to prevent this from rusting further? Is there a good way to POR 15 the inside of a frame without removing everything?

Thanks,
Spencer

P.S. i found lots of threads explaining how to POR 15 the outside of a frame but nothing on the inside.....
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Old 11-14-2011, 03:29 PM   #2
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Back 15 years ago I remember seeing a long tube that connects to a spray can. The end of the tube has a nozzle that fans the paint out to the sides, not the front like a normal nozzle. How it works is this. You stick the tube all the way in your frame rails. Then as you are spraying the paint you slowly pull the tube out. That way the rails get an even coating of paint on the inside.

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Old 11-14-2011, 03:37 PM   #3
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Quote:
Originally Posted by ipleadda2nd
Back 15 years ago I remember seeing a long tube that connects to a spray can. The end of the tube has a nozzle that fans the paint out to the sides, not the front like a normal nozzle. How it works is this. You stick the tube all the way in your frame rails. Then as you are spraying the paint you slowly pull the tube out. That way the rails get an even coating of paint on the inside.
It's the same concept they use for undercoating the inside of your frame. It works well.
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Old 11-14-2011, 04:29 PM   #4
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Eastwood has a frame sealer thats made for the inside of frames. I forgot what its called but it comes in a spray paint can and a 24" wand to really get it all in there. Im hoping to do it to mine before winter
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Old 11-14-2011, 05:47 PM   #5
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Quote:
Originally Posted by mike3770 View Post
Eastwood has a frame sealer thats made for the inside of frames. I forgot what its called but it comes in a spray paint can and a 24" wand to really get it all in there. Im hoping to do it to mine before winter
That's exactly what I was remembering. I thought it was from Eastwood.
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Old 11-14-2011, 06:19 PM   #6
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Internal Frame Coating w/Spray Nozzle

I did this to my '01 earlier this summer. Works great. I only used one can, if I had it to do over, I probably would have bought a second can. You need to tape over all of the holes in the frame or the coating will spray and drip out. I also found it on Eastwoods Ebay site for about five dollars cheaper than the actual Eastwood site.
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Old 11-14-2011, 06:43 PM   #7
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I used POR-15 on some rusted farm equipment. I found that without proper prep work as per the instructions, the POR-15 would not bond properly and chips off easily.

With proper prep work the stuff works great...as advertised!

If your going to spray POR-15...make sure you wear proper respirator, nasty stuff!
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Old 11-14-2011, 08:01 PM   #8
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I need to attack my frame inside & out. I noticed it has scaling rust and dirt inside the frame where you can stick your fingers in those round holes - I'm taking a hose to that and may use this Internal Frame Coating spray and/or Fluid Film to keep the rust at bay.
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Old 11-14-2011, 08:07 PM   #9
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When you have rust in the frame, there is just no way to get it out.
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Old 11-14-2011, 08:13 PM   #10
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POR 15 is great stuff, but have you ever considered just dumping some 85-140 gear oil down the inside of the rails? I know its not as nice as painting it but just an idea.
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Old 11-14-2011, 09:28 PM   #11
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Oil would most certainly work it just will work it's way out over time and trap dirt. Could get messy.
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Old 11-14-2011, 10:06 PM   #12
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Old timers would rub old oil on the frame. Yes, it traps dirt, but wipe that oily dirt away and you'd find nice shiney metal underneath. It works if you reapply every say 3000 miles or 3 months. I think the problem with the inside of the frame would be how to get the old gunk back out. Degreaser? I just heard about the Eastwood stuff a couple of weeks ago and while I don't have any rust issues, I'm going to treat before next winter anyway. I heard four cans is the way to go.
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Old 11-14-2011, 10:07 PM   #13
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Yea the stuff look interesting. I have some rust and would like to stop it.

Is this stuff sold only online?
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Old 11-15-2011, 07:08 AM   #14
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Internal Frame Coating w/Spray Nozzle

This is the link to the internal frame coating product by Eastwood. I have done my rusty 97 and it really cleans and seals things up nicely. One of the posters above said it was impossible to get the rust out of your frame and that is not true. Takes a bit of patience and work, but it is important like with all paints and coatings to have a clean and dry surface to start with. I used a telescoping magnet on a long flexible pole to remove all loose rust inside my frame before I sealed it. It is tedious, but I pulled pounds of rust scale out. I started on the ends with compressed air and blew debris to the middle. I held a shop vac in place over a frame hole and this caught a lot of scale as I was blowing with the air. Then I just worked the magnet. I was able to get both frame rails clean and then I used the Eastwood product. I used 2 cans per side. Be sure to tape over the holes in each section you are not inserting the spray nozzle into. Also have some rags handy and put some paper on the floor under your frame rail to catch drips. I applied it liberally. 2 days later I had a hard finish inside my frame.
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Old 11-15-2011, 07:11 AM   #15
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If you off road a lot it is easy to get sand and mud inside of the frame. It is important to wash that much out frequently and it attracts water and encourages rust. Once you have your frame clean and sealed, keep it clean!
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Old 11-15-2011, 08:35 AM   #16
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Thanks for all the replies. So a magnent and my blow gun and several hours. Is its smart to di 2 coats letting it dry completely between each. I just bought 2 cans is that enough?
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Old 11-16-2011, 08:12 AM   #17
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You need two cans per side to coat it properly. I put one thick coat on since a second coat would not be touching bare metal so I didn't think it would do any good.
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Old 10-17-2015, 02:57 PM   #18
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Cleaning out frame rust

I used this rubber tube with rare earth magnets inside it to clean out the rust. Then I went to a self service car wash and stuck the pressure washer into the frame holes and let it dry. Then 2 cans of Eastwood internal frame coating.
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Old 12-13-2015, 07:32 AM   #19
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Anybody try this 3M-1 Rust Fighter for use with a compressor and application wand and hose just for anti-rust treatment inside frames?

Reviewers say it is waxy substance which they say protects well, at least if used on newer frames. It would probably be less messy than oil.

I'm about to do the Eastwood spray mentioned above inside the frames of 3 TJs. Maybe the 3M product would be good to do after afterward for added assurance, assuming you never have to paint the inside again.

Regardless, the application method with compressor might work for Por-15, i.e., with a respirator etc.
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Old 12-13-2015, 08:19 AM   #20
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You should add some drain holes to your frame anyway. Cut some holes in there big enough to get a drill with some wire and chain on it to run in your frame rails to break up the rust and gunk and then hose it out real well. If you don't clean it out before you put a coating on its not going to do you much good.
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Old 12-13-2015, 10:25 AM   #21
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You could rig up a flue brush for a fireplace to help with knocking loose rust from inside frame. May not be the easiest but it works pretty good. They are usually about 6" diameter.
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Old 12-13-2015, 07:25 PM   #22
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Quote:
Originally Posted by WaterDR View Post
When you have rust in the frame, there is just no way to get it out.
Cut access holes, sandblast, weld up access holes, and paint. A better way than those spray wands, IMO, is to simply pour paint in and turn/tip the frame so it gets to all the corners. It wastes paint, but it's thorough.
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Old 12-13-2015, 07:43 PM   #23
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Quote:
Originally Posted by alegir View Post
I used this rubber tube with rare earth magnets inside it to clean out the rust. Then I went to a self service car wash and stuck the pressure washer into the frame holes and let it dry. Then 2 cans of Eastwood internal frame coating.
Brilliant idea using rare earth magnets. Thanks. I completely filled a quart-sized container with with the rust slivers and particle that I fished-out just from one size of the frame on my 2002 that had a couple frame-repairs!

I had somewhat larger rare-earth magnet that were rectangular and thin. One work better than 3 because I didn't cut any access holes. I duct-taped it to a 3 foot aluminum welding rod and bent the other end in small loop so it wouldn't poke my eye out.

Be sure to use enough duct tape or your magnet will make a permanent home in your frame.
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Old 12-13-2015, 08:18 PM   #24
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Eastwood Anti-Rust Aerosol with ext Nozzle Black
Item #26031Z -- I think that is what other referred to, above -- is also a wax-based substance.

It's definitely for inside rocker panels and frames, etc. but is that good over already rusted surfaces? Eastwood only mentions painted and bare metal that I can see.

While Eastwood says in their Q&A section that it can sprayed over rust to slow from spreading, they appear to recommend Eastwood Internal Frame Coating Black 14oz Aerosol — 15275Z for that. It also comes with the 24" tube.

Seems like it would be ideal to use that internal frame coating encapsulator and then the waxy stuff.
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Old 12-14-2015, 11:53 AM   #25
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Quote:
Originally Posted by WaterDR View Post
When you have rust in the frame, there is just no way to get it out.
It's quite an undertaking but a frame, removed from the body, can be rendered rust-free by giving it an electrolysis treatment.

Rust removal by electrolysis on a trailer frame

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