- V -

Velocity Stacks

The short tubes attached to carburetors that are tuned to a resonate frequency that forces more air into the carburetors. Also referred to as stacks.

Velvetouch

A brand of sintered-metal brake linings.

Vent

1.A controlled opening through which air or other vapors can escape. 2. A condition whereby fresh outside air may be introduced into the vehicle.

Vent Port

The forward port in the master cylinder bore.

Ventilate The Block

To throw a rod through the block.

Ventilated Rotor

A disc-brake rotor whose friction surfaces are separated by cooling fins having open, ventilated passages between each face for heat dissipation.

Ventilation

To circulate fresh air through a space or system.

Venturi

1. A narrow area in a pipe through which a liquid or a gas is permitted to flow. 2. The construction of the air passageway between the choke and throttle plates in a carburetor, so as air flows past this constriction, its velocity increases and a partial vacuum is produced, thereby promoting a flow of gas from the main gas nozzle.

Venturi Principle

The condition of a gas or liquid flowing through a pipe and the pipe diameter is narrow in one place, the flow speeds up in the narrow area, causing a lower pressure in the narrow area, which may be defined as venturi.

Venturi Vacuum Amplifier

An exhaust-gas recirculation system having a device that uses the weak venturi vacuum signal to regulate the application of strong manifold vacuum to the EGR valve, usually including a reservoir that supplies sufficient vacuum when the engine is producing too little for proper operation.

Vernier Calipers

A precision measuring instrument with both a fixed and a sliding jaw, and a depth gauge; used to measure thickness and depth.

Vert

A term used for convertible.

Vertical Load

The weight on a tire that serves as the input for a tire's performance.

Vertical Position

The position of welding in which the wold axis is approximately vertical.

Vertical Sensitivity

An indication of how much the vertical amplifer can amplify a week signal.

Vertical-Frequencies (VHF)

The band of signal frequencies between 30 and 300 MHz.

Very Low Frequencies

Those radio frequencies between 3 and 30 KHz.

Vetronix

A manufacturer of Automotive tools and equipment such as the Mastertech scantool.

Vette

(Also 'vette) A Corvette.

VFD

Vacuum fluorescent display.