Car Hacks & Mods For Dummies by David Vespremi

Author:David Vespremi
Language: eng
Format: epub, pdf
Publisher: Wiley

Expect to pay $150 to $400 to have your car foamed. Installation centers are few and far between in the U.S. (Japan still leads the way here), and foaming should not be attempted on your own.

Seam welding

Modern mass-production cars are put together on assembly lines by robots. Spot welds join the various bulkheads making up the car’s chassis (the component sections of the body). These welds are in spaced intervals along the car’s structural seams and are fired off by robotic welders in rapid succession as the car moves down the assembly line. The net result is a reasonably strong structure that can be produced quickly, and if needed for repair purposes, can have the tack welds broken apart (for example, to replace a damaged rear trunk or quarter panel).

One way to fortify your stock body car, short of converting to a tube chassis, is to reduce the gaps in the welds — a process known as seam welding. Welding the seams on your car’s chassis increases its stiffness, responsiveness, and safety. However, seam welding may make repairs impractical or impossible if the seams ever need to be taken apart to straighten the car after a collision.

Seam welding a chassis is no small endeavor:

You must strip the car down to the bare shell, although this can be done in sections.

You must remove all sound-deadening materials that might be in the way — including the stubborn tar strips covering much of the inside of your car.

When you’re finished, you must prime and paint the weld before reinstalling everything you want.

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