Powder coating will be tougher but POR15 can be touched up at home in the garage.

Also, the POR15 you will be able to run inside the frame rails. I don't believe you'll be able to powder coat the inside of a frame.

5 years ago we powder coated a frame for a build. It still looks great and has held up well. It was a YJ frame that doesn't rust like a CJ frame. We're also in SoCal so rust is not such a concern.

Dan

 

Chasis Saver

They say it's better the POR15, it's cheaper, and you get JF discount!
Monstaliner do-it-yourself roll-on truck bed liner

 

Chasis Saver

They say it's better the POR15, it's cheaper, and you get JF discount!
Monstaliner do-it-yourself roll-on truck bed liner

I've talked to some local paint shops and a paint dealership and they have all told me to stick to the POR and most of the shops carry both brands they told me if I was going to order it. POR would be better its been around longer and has a better reputation they said they have had customers come back after buying chassis saver and buy POR

 

I would powdercoat and save the POR15 for areas or rust repair. I'm appreciating the realtively rust free NW more and more though with the rain and 60 deg weather I'm missing the summer!!! Is it April still????

 

Don't listen to that crap, chassis saver is by far a much better product. See for yourself, go here and talk to jeep forum members who have used it or even better talk to magnet man!

http://www.jeepforum.com/forum/f43/introducing-monstaliner-uv-permanent-diy-roll-bed-liner-875162/

From that thread:

We are also the manufacturers of Chassis Saver™ Rust Preventive Truck & Auto Underbody Coating.
Chassis Saver is a high performance alternate to POR-15 at 45% lower cost.

From the chassis saver web site:

"Oh by the way I have bought a gallon of your Chassis Saver
before for my race car, and I have to say that stuff is
awesome. Very high quality product for a very good price.
Sure beats POR-15!!!" - L.M., Woretown, NJ

"I have waited before saying anything about your Chassis Saver
product until I had a chance to try both your product and the
competition. I am very satisfied with the finish and durability.
The restoration I completed 3 years ago looks as if it was done
a few months ago. Your product is by far the most durable and
provides excellent coverage. Chassis Saver is really
awesome paint, it beats the finish of POR-15 hands down."
- J.C., Colorado Springs, CO

BTW, if anybody used chassis saver and went back to por-15, they didn't follow the directions and definitely never talked to magnet man. Chassis saver is a much better product.:tea:

 

I have used both. POR-15 on the frame and Chassis Saver on the tub. For POR-15 I'd have to say that if you plan on a top coat to make sure it's done in the recommended time frame and not days after. Nothing seems to stick to it even when I used 320 grit paper. Chassis Saver top coats easily after the 320 grit paper was used. Otherwise I haven't seen too much of a difference with them, especially since the vehicle they were applied to doesn't move yet.

As far as powder coating goes. I would only bother with that if you don't go offroading. I was told by a powder coating place that it's tough to repair a good paint job, and why spend all the money just to scrape it off on the rocks.

 

I haven't used POR-15 but look into KBS coatings. I haven't used it yet but I have some in the garage and will be using it on my axles and frame soon.

 

POR will only be effective if the frame has no existing paint or primer AND has a surface coating of rust.

It is the rust (not loose rust or scale, surface rust) that lets POR do its thing. POR cures by exposure to moisture. It binds to the rusty metal because it pulls the moisture out of the metal. This, coupled with the impermeable hardening, prevents further rusting because the old water is away from the metal and the new water can't get in.

If you have paint on the frame POR is a waste of money because then it cannot do its thing. If the chassis is rust free, like sandblasted for instance, the POR will not be as effective (you would be better off letting it rust a bit first). ALso, POR is ineffective over any oil or grease.

For all of these reasons POR may or may not be correct for you. That is for you to decide.

Powder coating is also not the best for a Jeep. IMO. It is brittle. If the powder coating application is not perfect, you can get rust formed between the outer powder coat (which continues to look good) and the metal.

I do not have any experience with Chassis Saver, so cannot comment on that.

For an item as large as a frame, you might be best off with a durable primer and paint combo. It can be touched up. If you keep the frame clean (including the insides) it will not rust again.