what to do with unreachable surface rust?

[six-tee-nine]

As the subject says, what do you guys do with surface rust in places you cant reach.

Since my floor pans and my quarters are still excellent for instance I dont want to remove these panels just to blast the frame rails underneath. I know the inside of the frame rails is lightly oxydated due to no paint on the inside.
Same for the panel under the cowl, I know for sure it has a layer of surface rust on it but I cant reach under it without removing the upper cowl panel.

Ok an acid dip with e coat treatment would cure all my concerns but I'm not sure i want to go that route.

i think its more a thing to have peace of mind for the future when the whole car is repainted to not see a rust bubble one or two years after all the hard work is done....

[440]

Tough call as any acid left behind could seep out and cause a bubble later on down the road anyways. I'd just clean and treat it the best you can, its lasted over 40 years unprotected which would be safe to say it would likely last another 40 as long as it's only surface rust.

[Cooter]

Unless REALLY bad, I say screw it. You aren't restoring the car to last through the next 50 owners. You are restoring the car to last MAYBE another 10-15 years. Most is only surface rust anyway.

[Patronus]

I used some Eastwood products to treat inside the rockers of a Duster we just sold. Worked great, it had a long straw on it that shot out product in all directions coating the inside.

[Ryan]

The inside of the frame rails do actually have a coating on them from the factory. The cars were dipped about half way up. When I pulled my floors up my front rails had more dirt than anything in there yet not a sign of rust.

[six-tee-nine]

I used some Eastwood products to treat inside the rockers of a Duster we just sold. Worked great, it had a long straw on it that shot out product in all directions coating the inside.

I'm familiar with that stuff its kinda waxy oil that stiffens up after a while.  I would do that for sure to all insides of the rails and other cavity's

[71green go]

Although the underneath of my car is painted body color I will be oil spraying inside every frame rail on the car and every crevice....probably once a year or so

[RallyeMike]

Rust actually forms somewhat of a barrier that protects from more corrosion. Keep they car dry and the inside frame rails and under cowl will outlive for the next couple of generations.

[1973rallye]

We have a product (Canada) that is called RUST CHECK. I have had it applied yearly to every vehicle I have owned since 1991. I even applied it to a rusty 89 plymouth sundance after some hail damage paint repair. The engine gave out before the body. When I donated the car to a charity they wondered why I was giving them such a clean looking car. This stuff seeps into all the cracks and crevices. If applied commercially your car will drip for a week as it gets everywhere. For a ground up restoration/trailer car I would not go that route as it does attract dust. Assuming you want it to just spray into your frame rails I would highly recommend it. I have done so on my restored 73 and will be doing the same on my recently purchased 73. I also sprayed it inside the drain holes under the doors as it will penetrate the pinch welds. This stuff repels water and prevents rust from taking hold or getting any worse. I live in a city that seems increase salt use on the roads yearly and I swear by it. It is available in spray cans at the retail level for do it yourself applications. (Canadian Tire)

Here is the link if you want to read up on it.

http://www.rustcheck.com/

[Dino]

I used some Eastwood products to treat inside the rockers of a Duster we just sold. Worked great, it had a long straw on it that shot out product in all directions coating the inside.

I'm familiar with that stuff its kinda waxy oil that stiffens up after a while.  I would do that for sure to all insides of the rails and other cavity's

We have a product (Canada) that is called RUST CHECK. I have had it applied yearly to every vehicle I have owned since 1991. I even applied it to a rusty 89 plymouth sundance after some hail damage paint repair. The engine gave out before the body. When I donated the car to a charity they wondered why I was giving them such a clean looking car. This stuff seeps into all the cracks and crevices. If applied commercially your car will drip for a week as it gets everywhere. For a ground up restoration/trailer car I would not go that route as it does attract dust. Assuming you want it to just spray into your frame rails I would highly recommend it. I have done so on my restored 73 and will be doing the same on my recently purchased 73. I also sprayed it inside the drain holes under the doors as it will penetrate the pinch welds. This stuff repels water and prevents rust from taking hold or getting any worse. I live in a city that seems increase salt use on the roads yearly and I swear by it. It is available in spray cans at the retail level for do it yourself applications. (Canadian Tire)

Here is the link if you want to read up on it.

http://www.rustcheck.com/

Similar products and the best thing for any car. 

[71green go]

We have a product (Canada) that is called RUST CHECK. I have had it applied yearly to every vehicle I have owned since 1991. I even applied it to a rusty 89 plymouth sundance after some hail damage paint repair. The engine gave out before the body. When I donated the car to a charity they wondered why I was giving them such a clean looking car. This stuff seeps into all the cracks and crevices. If applied commercially your car will drip for a week as it gets everywhere. For a ground up restoration/trailer car I would not go that route as it does attract dust. Assuming you want it to just spray into your frame rails I would highly recommend it. I have done so on my restored 73 and will be doing the same on my recently purchased 73. I also sprayed it inside the drain holes under the doors as it will penetrate the pinch welds. This stuff repels water and prevents rust from taking hold or getting any worse. I live in a city that seems increase salt use on the roads yearly and I swear by it. It is available in spray cans at the retail level for do it yourself applications. (Canadian Tire)

Here is the link if you want to read up on it.

http://www.rustcheck.com/

Thats exactly what I will use on my car...great stuff

[Charger-Bodie]

We use a product called WK seal out. Creeps into places really well.

[Wollfen]

Have a look at this product and description, i have been seriously considering it for my car since it is specifically designed for doing what you want, anybody else used this stuff?
http://www.eastwood.com/internal-frame-coating-w-spray-nozzle.html

[Patronus]

Yeah, that's the stuff. Dries green, super thin so it runs into crevices. The one can did both rockers with leftovers..

[Troy]

Have a look at this product and description, i have been seriously considering it for my car since it is specifically designed for doing what you want, anybody else used this stuff?
http://www.eastwood.com/internal-frame-coating-w-spray-nozzle.html

I have several cans based on previous recommendations but I haven't used any yet. The first rails that I use them on will be accessible though so I'll be able to see how it goes.

Troy

[C928BRAN]

When i changed my pans, i coated all of my rails, inside, with por-15 rust encapsulater. best stuff since sliced bread. will never ever come off

[FJMG]

We have a product (Canada) that is called RUST CHECK. I have had it applied yearly to every vehicle I have owned since 1991. I even applied it to a rusty 89 plymouth sundance after some hail damage paint repair. The engine gave out before the body. When I donated the car to a charity they wondered why I was giving them such a clean looking car. This stuff seeps into all the cracks and crevices. If applied commercially your car will drip for a week as it gets everywhere. For a ground up restoration/trailer car I would not go that route as it does attract dust. Assuming you want it to just spray into your frame rails I would highly recommend it. I have done so on my restored 73 and will be doing the same on my recently purchased 73. I also sprayed it inside the drain holes under the doors as it will penetrate the pinch welds. This stuff repels water and prevents rust from taking hold or getting any worse. I live in a city that seems increase salt use on the roads yearly and I swear by it. It is available in spray cans at the retail level for do it yourself applications. (Canadian Tire)


I do not know about applying yourself but I would never have it commercially applied. There's a commercial distributor/applicator nearby and my mother took her brand new 2004 car to them right after she bought it since she usually keeps her cars a long time. In 2010 we noticed paint bubbling in a couple of spots and took it back since they advertise lifetime rust protection if you have them apply it regularly. Well in the multiple page lawyer speak document there is some keywords; they only protect against "rust through from the back". So until we can poke a finger through the exterior of the car they consider the product working.
Needless to say she never returned.
I am happy this product is working for you but I think it has more to do with your diligence in applying it not to mention your cleaning and preparation BEFORE using it.


Here is the link if you want to read up on it.

http://www.rustcheck.com/

[1973rallye]

We have a product (Canada) that is called RUST CHECK. I have had it applied yearly to every vehicle I have owned since 1991. I even applied it to a rusty 89 plymouth sundance after some hail damage paint repair. The engine gave out before the body. When I donated the car to a charity they wondered why I was giving them such a clean looking car. This stuff seeps into all the cracks and crevices. If applied commercially your car will drip for a week as it gets everywhere. For a ground up restoration/trailer car I would not go that route as it does attract dust. Assuming you want it to just spray into your frame rails I would highly recommend it. I have done so on my restored 73 and will be doing the same on my recently purchased 73. I also sprayed it inside the drain holes under the doors as it will penetrate the pinch welds. This stuff repels water and prevents rust from taking hold or getting any worse. I live in a city that seems increase salt use on the roads yearly and I swear by it. It is available in spray cans at the retail level for do it yourself applications. (Canadian Tire)



I do not know about applying yourself but I would never have it commercially applied. There's a commercial distributor/applicator nearby and my mother took her brand new 2004 car to them right after she bought it since she usually keeps her cars a long time. In 2010 we noticed paint bubbling in a couple of spots and took it back since they advertise lifetime rust protection if you have them apply it regularly. Well in the multiple page lawyer speak document there is some keywords; they only protect against "rust through from the back". So until we can poke a finger through the exterior of the car they consider the product working.
Needless to say she never returned.
I am happy this product is working for you but I think it has more to do with your diligence in applying it not to mention your cleaning and preparation BEFORE using it.


Here is the link if you want to read up on it.

http://www.rustcheck.com/

The key word as you pointed out is "diligence"  You are correct that they will only cover if it rust through from the back side on new or nearly new vehicles. My interest was in retarding or preventing rust. You still MUST take reasonable care in keeping your vehicle clean as you pointed out. There is no one stop solution, but the stuff works as good as anything out there in my opinion. Its a $150 per year well spent and like my other vehicles my Tacoma is now on the program. As for the frame rails in the charger, they will never see a salty spray so they should look as good for at least another 40 years.

[randy73]

I used some Eastwood products to treat inside the rockers of a Duster we just sold. Worked great, it had a long straw on it that shot out product in all directions coating the inside.

Rust Encapsulator is what I used.