[bsmith123]

The problem with prepping without stripping down is getting it clean and sanded and it's hard to reach some places with the body on

I think if I wasn't going frame off i might use rustoleum stops rust or a similar spray product--gonna be a lot easier to reach everywhere plus if you do go frame off later it will be easier to remove than rust bullet or por15

clean it really well if you have it running then spray down the boxed part of the frame

clean it up some more at home with a brush and mineral spirits and a couple of scrapers to get rid of gunk and brush it with marine clean or simple green and hose clean

let it dry a day and blow out with air if you can, clean up the rust with a sm rust wheel and treat with naval jelly or acid

I let it dry than sand off the white residue from the acid and then blow it all out with air--finally wipe it down with acetone or rubbing alcohol and a rag.

then paint away.

Expect at least 10 times the work you imagined especially around the eng trans for grease. I like to work on a small area at a time and get it really good--then move on to the next.

how far you go is up to you, I am doing a frame off so I don't want to scrimp on prep or effort at this stage but you could just clean it really well and spray away, depends on how long you want it to last.


if you are planning a frame off later I would recommend steering clear of rustproofing--that's stuff is a pain to remove!

[shelfboy1]

we used por15 on a freinds jeep frame the frame was new .we cleaned prepped did it by the book and a year or less later its all coming off .called the factory and was told its for rusty stuff not brand new metal .the dealer never told us that and money was refunded but all that work is wasted.i am starting an fj40 so i dont know what im going to use good luck

[adamhagan]

I think I am going to cut out and replace rot/ and then prep really good for spraying with Zero rust. Thanks for all your suggestions.

[calsum2]

I coated my frame with por 15 five years ago and it held up perfectly. I have used it on many projects and have never had a issue. Prep is the key I love the stuff!