Ultimate Hot Rod Glossary – The N’s & O’s
Nail: Any car used as a daily driver.
Nailhead: 1950’s Buick V8, so named because the relatively small diameter valves.
Nerf Bar: Tubular bumper.
New Old Stock (NOS): New parts that have never been installed/used, but have been sitting around a long time. (Also an abbreviation for Nitrous Oxide System).
Nitro: Nitromethane, used as a fuel additive in some drag cars.
Nitrous: Nitrous oxide.
NOS: Nitrous Oxide System (a.k.a. laughing gas, liquid supercharger, N2O, nitrous, “the bottle”): apparatus for introducing nitrous oxide into the air intake of an engine prior to the fuel entering the cylinder.
Nosed: Chrome details and trim removed from the hood and smoothed over.
Orange Peel: A way to describe the finish in a paint job where at close inspection it appears a bit “bumpy” – much like the outer skin of an orange. Orange peel can be eliminated via color sanding and is often considered a measure of the quality of a paint job. Nearly every paint job has some amount of orange peel at the end of the paint application stage. Some paint jobs stop at that point while higher-end paint jobs typically remove most – if not all – orange peel. Basically, the less you want, the more time it takes and the more it costs.
Original: Contains only parts originally installed on the car or NOS parts from the manufacturer with no substitute or aftermarket parts.
Original Equipment Manufacturer (OEM): New (current production) parts made by the vehicle’s original manufacturer (Ford, Chevy, etc.)
Outgassing: The release of gasses generated during the curing of paint, body filler and many other forms of catalyzed material. This is the result of a chemical process and the gas being released (mostly from the solvent used to thin the paint mixture for spraying) is one of the reasons why body filler shrinks and paint tends to “pull” or tighten around even the tiniest flaws in bodywork. That is why you may see imperfections one day that simply weren’t visible days – or even weeks – before. Paint jobs can outgas for 6 months or more – leaving a dull milky residue that is removed via polishing.
Oversteer: The sensation where the front end of the car experiences more body roll/lean while corning than does the rear. The result is that the rear end has a tendency to slide or “break loose” before the front. Oversteer can be reduced – or even eliminated – by adding or increasing the size of the front anti-sway bar.