DO NOT LET IT CURE. Once cured, you would need to use their tie coat primer to bite into it then you would have to top coat the primer. Save your time and money and just put your topcoat on like another coat of POR15

 

So topcoat when it is still a little tacky then?

And how much will I need to do just the frame?

 

Yes, And I hop you are spraying.

a gallon of each

 

Everyone has been telling me POR-15 goes a long way. So I didn't think I would need quite that much, glad I asked.

And I was planning on brushing it on.

 

Better to have too much and not need it than be short and looking for it. Buy the 4 quart special.

Also, Iy are going to HATE brushing it on a truck frame. It is going to take FOREVER(like a whole weekend) and will not be as good as a job as spraying it

 

I should have mentioned I am probably only doing everything behind the cab when I get the bed off for body work, not the entire frame.

I'll think about spraying it on if I can. I have access to an air compressor, though not sure if it is enough to run a spray gun(never used one before). It's a 5.5HP Emglo that we use for construction.

If I can spray it on, how much do I need to thin it?

 

RENT a compressor and buy a harbor freight POS throw away spray gun. POR says not to thin it more than 10%. I typically thin it 2-3%

Also don't forget a good respirator.

I would do the WHOLE frame and underside of the truck while you are doing the rear of the frame

 

+2 for spraying it.
I've brushed 1 frame already and it was a pain to know what was covered already after the first coat went on.
That was the deciding factor for spraying mine. That and how quick spraying is. I had 2 coats of Chassis Saver and 2 coats of top coat on in a day. Brushing took a weekend.
Both cases the frames were stripped.

 

Found out some more about my compressor, it's an 8 gallon and it says it's 12 CFM at 100 PSI. If this one can't handle it, then what should I be looking for if I rent one?

 

You will be fine with that. Most spray gun are 5cfm or less at 30psi

 

That's good to know, so then all I need is a cheap spray gun and a respirator.

 

And lots of tape and plastic to mask of the truck.
Make SURE you tape EVERY body panel seam

 

I have plenty plastic and old tarps laying around. And Ill make sure I cover everything but what is getting painted.

Thanks for all the help.

I need to set a day over at the body shop to get the bed off, and then I will make a new thread when I get started.