rust prevention - Ford Powerstroke Diesel Forum
94-98 7.3L Exterior Discussion Body and Accessories Talk

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post #1 of 4 Old 05-07-2013, 11:06 AM Thread Starter Fanatic
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rust prevention

I bought a rust free box out of Texas, and the guy i bought it from said if you drill 1/2' holes in the inner fender well it will help crap drain out so it doesnt rust on the usual spots on the bed. has anyone else heard this? Just wondering if its worth my time and stress drilling on my 850 new box lol

97 f-250 PSD, 85k as of 5/23/14, ZF5, silver w/ red stripe
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post #2 of 4 Old 05-07-2013, 11:14 AM
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never herd of that, it would indeed work! Also spray the underside of the bed with truck bed liner! That will prevent rust as well!
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post #3 of 4 Old 05-07-2013, 06:19 PM
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Just had the wheel lips apart on my box. The inner fender design combined with an open middle bed pocket is a recipe for disaster. There is a dimple in the inner fender maybe 4-6" behind center that touches the outter wheel lip that traps water and debris. My suggestion would be to load up the fenders with oil through the bed pocket and then plug the pocket hole. I plan on putting on a tonneau cover to cover the holes.

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post #4 of 4 Old 05-25-2013, 04:01 PM
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Get a spot weld drill and REMOVE the inner wheel well arch support.

Then drill 1"-1.5" drain holes. That way dirt will come out and you can get in there to rinse it out.

While the arches are out, I would PAINT the backside of the bed side and the arch support.

Then. use panel adhesive to put the arch support back in. If you weld it, it will burn the paint and rust will start INSTANTLY

Arches with the holes drilled and painted

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