rusty bottom...

[guruerror]

Originally Posted by Bimmer9938

What you did was just cover up the rust, it will continue to spread under the under coating. You need POR 30 paint, it converts the rust to a paint. I've been slowly doing sections as needed. It's expensive, but it's final. It dries shiny but unless you spray a UV protectant on it will fade to flat black which matches the factory undercoating nearly perfect. Wear gloves cause nothing takes it off your hand, it will be on for your hands for days otherwise.

http://www.por15.com/POR-15/productinfo/1GB/

Interesting...

I've been using Duplicolor Rust Fix followed by their Aerosol Bed Armor. Their 'Bed Armor' product is a slightly rubberized version of spray on liner. It's not quite as gummy as the straight-up undercoating...the combo seems to work well and may not be as expensive as some other proposed solutions.

[s_c5519]

We also did the POR15 to one of our old H2's. Lot's of people in the Jeep forums recommeded it as Jeeps are notorious for undercarriage rust.

It's a multi step process with the degreaser, acid wash, then paint... We used it straight out of the can with various brushes. Lot of work and a long time to do, but results were great. It doesn't look like factory though in the end, its not as smooth, and the color is different...

[tyler1bo]

I've been researching POR 15 and undercoating for days and it looks amazing after its done..but really seems like a ton of work. Of you guys that have painted, did you disassemble or avoid anything specifically? Can I mess something up mechanically by painting it?

[s_c5519]

The wife masked off certain areas, and used a grumbacher artists fan brush for the majority of the work. It has a thin and flexible bristle so you can be accurate with it and get into hard to reach spots... Yes a TON of work!!

Originally Posted by tyler1bo

I've been researching POR 15 and undercoating for days and it looks amazing after its done..but really seems like a ton of work. Of you guys that have painted, did you disassemble or avoid anything specifically? Can I mess something up mechanically by painting it?

[tyler1bo]

Just did a touch up on my rear axle and driveshaft with Krylon dual primer/paint gloss black spray. All I did was clean the area with soap and rag, sand with wire brush, and spray. Actually covered both areas with one can. I'll conjure up some pics later, but all in all it looks much better than it did!

[VegasGuy]

I agree with the others. It's best to power wash the undercarriage to remove the road salt and dirt followed by a "paint" that converts rust into a primer coating. THEN cover with a coating of your choice. I have used the shaker can version of this stuff on patio furniture and it works very well.

[[__--MUD--__]]

Thats just non cancerous surface rust from exposed metal.

All undercarriage should be done in satin black. Gloss will turn dull looking after a while from road debris.

Kmart - Dutch boy Acrylic Enamel - Satin Black. Has to be from there...something different in there ****. Easy touchup. Seen alot of frames painted w that, looks good and its cheap.

This is exactly what started my entire project...if your like me, where do you stop. I should of just yanked the entire cab off the truck from the begenning.