Rust prevention/neutralization inside an inaccessible area

[glovemeister]

Curious as to how best to neutralize/prevent further surface rust in areas such as behind door crash bars, inside roof braces etc. I know it should be removed, but given that the outside metal is mostly 100% perfect I'm not gonna fool with that.

I will get anything I can with various wire brushes or scrapers, but  behind these areas I wasn't sure about. My current plan is to utilize a spray nozzle type tip and soak the metal down inside and let the rust converter run where it wants. If I can't access it I plan to drill a few spots soak it down, and then weld the holes over. Good bad?

[Challenger in NC]

Curious as to how best to neutralize/prevent further surface rust in areas such as behind door crash bars, inside roof braces etc. I know it should be removed, but given that the outside metal is mostly 100% perfect I'm not gonna fool with that.

I will get anything I can with various wire brushes or scrapers, but  behind these areas I wasn't sure about. My current plan is to utilize a spray nozzle type tip and soak the metal down inside and let the rust converter run where it wants. If I can't access it I plan to drill a few spots soak it down, and then weld the holes over. Good bad?

Short of acid dipping the car, I would imagine that using the rust converter is one of the few things you can do. If you can use a small flexible hose or wand that will spray the neutralizer/converter 360 degrees inside these areas, this should help.

[glovemeister]

Short of acid dipping the car, I would imagine that using the rust converter is one of the few things you can do. If you can use a small flexible hose or wand that will spray the neutralizer/converter 360 degrees inside these areas, this should help.

Thanks bud! Figured it was my only option. Do you have a preferred converter?

[67vertman]

I have had good luck with this product....http://picklex.com/

like you I had rust in hard to reach places, I put this in a "pump" sprayer and coated those areas, two years and no return of the rust.

[BIGSHCLUNK]

I am often amused by people who proclaim totally rust free cars....  as of this day no one has accepted my sawzall challenge...   

[glovemeister]

I am often amused by people who proclaim totally rust free cars....  as of this day no one has accepted my sawzall challenge...   

if this a reference to me, the areas I am referencing are rust free on the outside as I've stripped it to bare metal. I got lucky compared to a lot of what I've seen and have typical stuff in some areas. I just see no reason to cut metal off just to get to back side combined with a young guy budget.

[BIGSHCLUNK]

No not at all. We all clean things up as best we can, but short of dipping theres always something lurking somewhere

[3D]

I have heard or a wax spray that can be used to stop the rust from spreading.
its an aerosol spray can with a 360 degree tip and a long flexible nozzle.

[Challenger in NC]

I have heard or a wax spray that can be used to stop the rust from spreading.
its an aerosol spray can with a 360 degree tip and a long flexible nozzle.

Eastwood carries this:

http://www.eastwood.com/internal-frame-coating-aerosol-black-14oz.html?fee=7&fep=50392&adpos=1o1&creative=61491489780&device=c&matchtype=&network=g&SRCCODE=GA220010&gclid=CLeR0NrPoMQCFQHMtAodJBAA5A

It's pricey but might be worth the piece of mind

[soundcontrol]

I used this to spray inside my subframe connectors after welding them, seems to work fine, at one point I will get one of those inspection cameras so I can see inside, how well it covered.

[Challenger in NC]

I used this to spray inside my subframe connectors after welding them, seems to work fine, at one point I will get one of those inspection cameras so I can see inside, how well it covered.

That's pretty cool, make up your own batch of treatment and spray it, cheaper than those aerosol cans.

[HP_Cuda]

I'll take your sawzall challenge if you place 200k USD in my hands before you start cutting!

 

I am often amused by people who proclaim totally rust free cars....  as of this day no one has accepted my sawzall challenge...   

[brads70]

I used this stuff
http://answers.canadiantire.ca/answers/9045/product/0477921P/rust-check-rust-check-coat-protect-questions-answers/questions.htm

and this one REALLY creeps even into spot welded panels , Just don't plan on doing any paint work for quite awhile....    Great for keeping mechanism's moving free too. 
http://answers.canadiantire.ca/answers/9045/product/0477907P/rust-check-rust-check-spray-questions-answers/questions.htm

[glovemeister]

Started looking around at rust converter/treatment options. Basically just got more questions than I started with haha.

Essentially, I read that Wurth, Ospho, and the Metal Prep/Ready by Por 15 are all good products. Various internet sites discuss either option.

I do see that all these products apparently had issues with paint/primer adhesion over the top, unless the panel was washed with solution still "wet".

So my thought it, pick any of them and use inside  inaccessible places as paint will not get there anyway. For any location that I can easily get a paint gun on such as hood outer skin, do not use them and instead use something like vinegar and water? Basically, was thinking in addition to using inside inaccessible places I could use one of these solutions for "surface rust protection" until I get it with the epoxy primer. Thoughts?

[V8Cowboy]

I would probably spray it with "Fertan". It converts the upper rust layer and dissolves it, which then can be brushed off. Over the new, rust stable layer you can use any preferred seal layer, like paint, wax, bitumen etc. For doors my favourite is "Fluid Film A", an oily, fatty substance for rust prevention used widely here for cars, ships etc.... any sill you can't access easily and is exposed to water and therefore rust. Good for doors, this stuff creeps in each and every corner. Bad for roof areas, guess you would have to wash your hair even more often, as it would drip down, especially when sunny.