- D -

Dohc

See dual overhead cam.

DOL

Data output link.

Dolby

A brand of noise reduction system.

Dolly

To shape or form metal.

DOM Tubing

An acronym for drawn-over mandrel tubing with precise and consistent inside and outside dimensions, used for race-car chassis construction.

Dome Light

A vehicle’s center overhead light, which comes on automatically when a door is opened.

Domed Piston

A piston having a raised crown.

Domestic

Of U.S. manufacturer.

Donuts

1. A 360-degree tire burnout. 2. Tires, especially big racing slicks.

Dooley

A Chevrolet pick-up truck with dual rear wheels; generally a term given to any dual-wheel vehicle.

Dooley

See dualie.

Door Entry Guard

Designed to protect exposed paint--or sometimes carpet--in doorways. Door entry guards come in a variety of materials, from polished stainless steel to rubber, including non-skid designs. Also marketed as a door sill guard.

Door Panel

Either the exterior sheetmetal on a door or the interior trim piece that covers the metal, to which the armrest, window controls and locking mechanism typically are attached. Many interior door panels are finished in a combination of cloth and vinyl or leather. Several companies offer woodgrain door trim kits to dress up a vehicle's door panels.

Door Sill Guard

See door entry guard.

Door Trim Kit

A styling accessory that often is used to complement a dashboard dress-up kit. There are woodgrain door trim kits, as well as carbon fiber and stainless steel kits. Most kits attach to the door panels using special tape.

Doorslammer

A full-bodied drag car with functioning doors.

Doosy

A variation of doozie.

Doozie

1. Short for Duesenberg, considered the greatest racing car ever built in the United States. 2. Anything, such as a car, that is truly fine or outstanding.

Doped Solder

Solder containing a small amount of an added element to ensure retention of one or more characteristics of the materials on which it is used.

Doping

The intentional adding of impurities to pure silicon or germanium to form either P or N type semiconductor materials.