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07-24-2011, 08:54 PM
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#1
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Senior Member
Join Date: Sep 2009
Location: Fort Campbell
Posts: 118
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frame paint???
Well now I am ready to mount my box, what paint to use on the frame rails? Naturally POR-15 would be the first choice, but man that stuff is expensive. So what is the second choice?
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1994 International 4700 powered by a DT360 (5 years and still working on it)
1990 Ford Bronco II
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07-24-2011, 11:09 PM
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#2
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Senior Member
Join Date: Dec 2008
Posts: 105
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Re: Frame paint
How about either good old Rustoleum paint, which seems to hold up real well when the surface has been prepped right. Another idea is the brush-on or spray-on bedliner material. That stuff is indestructable and should last forever if applied properly.
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07-25-2011, 11:15 AM
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#3
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Senior Member
Join Date: Jan 2011
Posts: 527
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I would not suggest spay on bed liner or undercoating, as you will inevitably coat some things you don't mean to coat (like wiring, air lines, bolt threads, etc.) making your life miserable when you need to crawl under the truck and work on it. Stick to the rustoleum. Brush makes a nice heavy coat to keep the rust away, but the spray gun does a better job on the nooks and crannies. Toss a coin.
Way back in the day we used a primer call zinc chromate from 3M on our stake body beds and tank trucks when we would sandblast and recondition them to go onto a new chassis. Sprayed over the freshly blasted metal the stuff was virtually indestructible. I remember after years of service the paint topcoat would eventually chip off inside the wheel wells from rocks etc, but that primer coat would never chip off. It was a hideous ugly yellow-green (which you painted over anyway) but I am her to tell you it worked. I don't know if the stuff is still available, probably the epa got rid of it like everything else that actually worked good.
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07-25-2011, 03:30 PM
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#4
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Senior Member
Join Date: Dec 2008
Posts: 105
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Quote:
Originally Posted by hot rod
Way back in the day we used a primer call zinc chromate from 3M on our stake body beds and tank trucks when we would sandblast and recondition them to go onto a new chassis. Sprayed over the freshly blasted metal the stuff was virtually indestructible. I remember after years of service the paint topcoat would eventually chip off inside the wheel wells from rocks etc, but that primer coat would never chip off. It was a hideous ugly yellow-green (which you painted over anyway) but I am her to tell you it worked. I don't know if the stuff is still available, probably the epa got rid of it like everything else that actually worked good.
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I believe zinc chromate is still available. Just check with your local auto or commercial paint supplier. Like Rod says the stuff is great for inhibiting rust. We used it extensively in ship repair as well as auto body.
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07-25-2011, 04:12 PM
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#5
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Senior Member
Join Date: Feb 2006
Location: OKC, Ok.
Posts: 109
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I would agree, . .zinc chromate is fantastic, . . .however, . . .last I knew the EPA killed it, . .or made the manufacturers change the formula, . . probably not as good as the old stuff. Damn gov't screwed up toilets, light bulbs, gas (ethanol), and probably 27 other things that I can't think of right now!!!
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07-25-2011, 09:32 PM
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#6
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Senior Member
Join Date: Nov 2010
Location: Grafton
Posts: 285
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When I was in the airplane biz we used zinc chromate as a primer for corrosion resistance. All the aluminum got zinc chromated.
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Started looking for 379 Peterbilt TC, 24' to 30' box, bumper pull--but ended up w/1999 Liberty Coach conversion of 45' Prevost XLV bus. 1,000sf heated/AC'd race shop w/dump station, 50amp shore pwr where bus parks, 3 NASCAR/ARCA race cars & 26' Bravo trailer.
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07-25-2011, 10:38 PM
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#7
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Senior Member
Join Date: Mar 2008
Location: West Fargo ND
Posts: 300
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I used cold galvanize paint on things I don't want to rust, but don't care the finish. I painted angle irons on a 20' antique windmill out in our yard 10 years ago, looks like I painted it yesterday, comes in gallon cans or spray cans. On the RumRunner I used many quart cans of Krylon Rustoleum and disposable foam brushes.
same paint, no overspray.
-blizz
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2001 GMC 6500 Topkick, 22' box, dropped frame, designed to fit into a 9' garage door. 3126 CAT 6spd Man Lo-Pro 19.5's w/ 3.07 rear axle ratio
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