Frame Rust Prevention.

3rzrunner

Member
Hi guys, I just thought I would do a review/write up on a really cool frame rust preventer I just used on my 4runner's chassis.
First off
-My Runners frame was EXTREMELY rust free :) just some surface rust on the welds.
-Second the exterior surfaces of the chassis have been sanded, primed and painted with brush-on oil based tremclad. (to prevent further rust in the many years this truck will run for.)

So I thought I have just rust proofed the exterior of the chassis what about the interior? So I did some research and found this product.

The product is called "EASTWOOD INTERNAL FRAME COATING"
It has

•Tough phenolic resin penetrates, converts and encapsulates the rust on the internal surface
•Zinc phosphate seals it to prevent future corrosion
•24"-long tube with conical nozzle reaches in to spray coating in a radial pattern for complete coverage

here is a link to their website.
Eastwood Internal Frame Coating

I used 3 cans in total to do the whole frames interior so 3x$17.99
They also have a really cool exterior frame coating but I had already tremcladed so I didn't order it.

OK. Enough with the blabber on with the pictures!

hope you enjoy!
 

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Good find.
Little bit of chemistry here. Zinc phosphate Zn3(PO4)2 is used to do the cathodic protection. Zinc or magnesium is what's used in ship hauls against corrosion. Zinc is more prone to oxidize then iron, therefore, zinc gets oxidize (corrosion) before the iron. This way the frame stays intact!
 
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Good find.
Little bit of chemistry here. Zinc phosphate Zn3(PO4)2 is used to do the cathodic protection. Zinc or magnesium is what's used in ship hauls against corrosion. Zinc is more prone to oxidize then iron, therefore, zinc gets oxidize (corrosion) before the iron. This way the frame stays intact!

So this product will convert rust inside the frame to (?)


And you can spray on any rust ? Does it matter how bad the rust is ? Hard to know how much rust inside the frame

I'm interested in this.
 
I agree with the OP. This is a great product. Easy, even fun, to apply. My truck was up north in the rust belt for 15 years before I bought it. It did not have any frame rot but definitely had moderate surface rust on the frame. I used the Eastwood internal coating to get inside the frame and applied several coats of their rust converter to the outside of the frame. Obviously time will tell, but it seems to be holding up well. And the frame went from looking terrible to looking really good.
 
I used this product on my rust-free internal frame rails and applied POR to the exterior. I think I used three cans to do the entire frame-including the tubular cross pieces. I put it in thick.

Product was easy to use.
 
Per the website:

Tough phenolic resin penetrates, converts and encapsulates the rust on the internal surface
Zinc phosphate seals it to prevent future corrosion
24"-long tube with conical nozzle reaches in to spray coating in a radial pattern for complete coverage
Aerosol covers 10 sq. ft., qt. covers 50 sq. ft.
Fully cures in 24 hours
 
But can you use this product on rust it's self ? If you have internal rust ?
The key is surface rust. If you have penetrations your best bet is to repair the damage, treat it with POR and then coat it with the Eastwood.

And remember, you will need to apply it periodically down the road as this is what rusts off in place of your frame.
 
The key is surface rust. If you have penetrations your best bet is to repair the damage, treat it with POR and then coat it with the Eastwood.

And remember, you will need to apply it periodically down the road as this is what rusts off in place of your frame.

I know for sure I don't have penetration , if you mean like bad rot! My frame looks very clean. I took care of very very minor surface rust only on few spots. There is some rust I can see on th back of the frame where the hitch area mounts, you can kinda peak inside and see little bit. It's hard to tell how bad or if it's bad inside. But I have a feeling like it's clean. I tried feeling around with my fingers through the holes to try and feel any rust peeling.



I'm just curious what this little flat bar looking thing is sticking up out of my frame. That looks rusted ! Lol on both sides. it does not look like part of frame !!! Under the flat bar it looks good on the frame.


Someone's said it's for the hitch where it screws in.

You say use por15 Inside the frame then use the Eastwood product on top ?

Can you just get away with Eastwood by applying on rust ?

Yea I see it converts rust, so I'm guessing it's meant to be sprayed on rust !!!?
 
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I notice you are in BC as well. Where did you buy this stuff?

Hi Brandon, Yes I am in North Van, I ordered this stuff directly from east wood because I went to most every car undercoating place, detailing shop, parts store and NOBODY had it. But they didn't charge that much for S+H anyways so might as well order it right from them!

I Think I have seen your truck around Van a few times as well!
 
You say use por15 Inside the frame then use the Eastwood product on top ?

Can you just get away with Eastwood by applying on rust ?

Yea I see it converts rust, so I'm guessing it's meant to be sprayed on rust !!!?
If it's just surface rust then you should be fine with the Eastwood spray. Don't be afraid to get under there and remove as much of the rust as you can with a Dremel or sand paper before spraying the frame either.

I was referring to if the rust was bad and needed to be repaired to use POR15. Then use the Eastwood on the interior as a preventative.

The problem with rust is once it gets in there it's near impossible to get out no matter how pro-active you are about it.
 
If it's just surface rust then you should be fine with the Eastwood spray. Don't be afraid to get under there and remove as much of the rust as you can with a Dremel or sand paper before spraying the frame either.

I was referring to if the rust was bad and needed to be repaired to use POR15. Then use the Eastwood on the interior as a preventative.

The problem with rust is once it gets in there it's near impossible to get out no matter how pro-active you are about it.

Here in my thread you can see how my frame is
http://www.toyota-4runner.org/3rd-gen-t4rs/170655-koltlt-97-sr5-build-thread.html


I took care of the surface rust on the outer part of the frame. There was little amount.

Now I'm interested into taking care of the inside. But it's impossible to remove any rust inside manually. So this Eastwood product has my attention !!

You see that flat rusted bar looking poking out of my frame from the back ? What is that ? It DOES NOT seem to be part of the frame. Someone on here said it's for the hitch or something. But anyways, the inside looks and feels good as far as the eye can see and as good as the fingers can feel.


Think I can just go ahead and buy this product and cover the inside ? Even if it's little rust ?
 
Here in my thread you can see how my frame is
http://www.toyota-4runner.org/3rd-gen-t4rs/170655-koltlt-97-sr5-build-thread.html


I took care of the surface rust on the outer part of the frame. There was little amount.

Now I'm interested into taking care of the inside. But it's impossible to remove any rust inside manually. So this Eastwood product has my attention !!

You see that flat rusted bar looking poking out of my frame from the back ? What is that ? It DOES NOT seem to be part of the frame. Someone on here said it's for the hitch or something. But anyways, the inside looks and feels good as far as the eye can see and as good as the fingers can feel.


Think I can just go ahead and buy this product and cover the inside ? Even if it's little rust ?

Your frame looks sweet after the rust prevention!
I think its perfectly fine to put this stuff on any level of rust but the less the better, because it is an epoxy resin that seals and hardens like a rock.
 
Here in my thread you can see how my frame is
http://www.toyota-4runner.org/3rd-gen-t4rs/170655-koltlt-97-sr5-build-thread.html

You see that flat rusted bar looking poking out of my frame from the back ? What is that ? It DOES NOT seem to be part of the frame. Someone on here said it's for the hitch or something.


Think I can just go ahead and buy this product and cover the inside ? Even if it's little rust ?

the rusted flat bar your speaking of is just that, a flat bar that has nuts welded to it. those nuts are the nuts that have bolts running through them that hold your hitch on to the frame.

there would be no way to remove those nuts if you were to ever pull your hitch, so thats why they are welded to that flat stock.
 

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