There isn't a word in the car enthusiast's vocabulary that evokes a lot more emotion than the word "rust". It really is the automotive equivalent to "cancer". Rust is negative news, no question. It is also a pretty misunderstood problem, 1 that can be effortlessly dealt with or at least controlled to preserve an otherwise excellent 'ol rig.
Preservation and Upkeep:
The most severe sort of rust is deep panel rot. The metal in fact disintegrates causing holes and other harm. This requires new sheet metal to be grafted into the panel, or total panel replacement. Why does this occur in certain places and not other individuals? Prolonged exposure to moisture. The bottom of a fender, particularly behind the wheel well is a common area. Over the years of being driven, dirt and debris accumulates in the bottom of the fender and stays wet, accelerating the rust method. Other prevalent areas are quarterpanels, windshield channels and lower doors. We've all seen rust out.
All vehicles, no matter whether restored or just beat up old drivers, can benefit from taking a trip to the Car Wash and pressure washing these locations. Put the rig on jackstands, crawl under there and blast that old dirt and debris outta there!! This is the single finest thing you can do to preserve whats left of a future project, or maintain a finished car preserved.
Dealing With Surface Rust:
Surface rust is actually minor and can simply be dealt with. It really is just rust colored metal that does not have deep pitting or holes into the pores of the metal. This ordinarily is not an emergency. The rust/oxidation can be sanded off and a non-porous primer can be applied. Rust Bullet, POR15, or old school epoxy primer can be made use of to encapsulate what molecules of rust stay in the pores of the metal that can't be sanded out. A cheap painless to use material is plain old Rustoleum. Properly carried out, this should certainly treat the rust for very good.
Pitted Metal:
This gets a small a lot more involved. The rust has penetrated the pores of the metal, but not to the point of rust by means of. There are supplies obtainable that treat this really nicely. These contain phosphoric acid, which dissolves rust. You can brush it on and it will visibly turn the corrosion black. When the wetness of the material goes away, encapsulate with non-porous primer and that works fairly well. The non-porous primer seals the air/moisture away from the corrosion. The corrosion cannot react with out moist air to feed it, so it suffocates the rust, and the rust residue lays dormant below the primer.
Handy tip: Use a power drill with a decent sharp bit to nibble away any rusty residue. You will see clean fresh searching metal appear as you grind it out. Low-priced and reliable!!
Panel Repair vs. Replacement:
As a rule, the OEM sheetmetal parts are considerably greater stampings than any aftermarket parts. This is why i choose to patch as much existing panel as attainable rather than replace. The excellent news is that there is a huge availability of patch and replacement panels, and there is no shame in cutting up a complete panel for just a couple of patches to use. Think twice before you fully hack off your '69 Chevelle quarterpanel if it only demands 25% reworked, cuz the new 1 could possibly not fit up. This commonly applies with trunk floors. If the center section only is rusted, why invest in a complete trunk floor and get out that it will not even fit through the trunk opening for installation cuz it really is too big?
Sandblasting:
This is in my opinion an costly impractical process. Most of the rotted ares will be cut out and welded up, and any surface rust can be dealt with chemically. There are a lot of hidden difficult to reach locations that cannot be gotten to with the blasting equipment, so whats the point? Nibble any rust scale away with a drill bit until the metal looks clean, then hit it with primer. Deep rust can only be partially removed anyway, it's not feasible to get blasting media deep sufficient into badly pitted metal to remove every single molecule of rust, so don't wig out about rust. Any areas that do require blasting can be spot blasted.
Preservation:
It really is safe to assume that if you maintain your vehicle in a clean dry garage, or even below a tarp, the weather will not get to it. Do not drive it in the rain, don't leave it outside all winter, and the possibility of rust is zero.
Rust is negative news, but it 'aint nothin' to be 'skeered of.
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