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Tune Up

A routine maintenance procedure that includes replacing the rotor and spark plugs; in older cars, replacing the rotor, points, capacitor, spark plugs and adjustment of the timing.

Tune-Up Manufacturers Council (TMC)

A trade association for the manufacturers of ignition parts.

Tune-up Specifications

Specifications used during a tune-up procedure on a vehicle.

Tuned Exhaust

An exhaust system having equal length passages.

Tuned Header

A term used for tuned exhaust.

Tuned Intake

A term used for ram tuning.

Tuned Port Injection (TPI)

A multiport fuel-injection system used on 5.0 and 5.7 Liter General Motors V-8 engines featuring tuned intake runners from a common plenum.

Tunes

Slang for a stereo sound system.

Tungsten Electrode

A non-filler metal electrode used in arc welding, arc cutting, and plasma spraying, made principally of tungsten (W).

Tungsten Inert Gas Welding

A welding process using tungsten (W) with an inert gas, such as argon (Ar), as a shield.

Tunnel Ram Manifold

An intake manifold having a large plenum and long runners to the intake ports, improving output at high rpm.

Turbine

1. The driven member inside a torque converter consisting of many vanes that receive fluid flow from the impeller. 2. A driven member that connects to the transmission input shaft and provides torque input to the planetary gearset.

Turbine Engine

An engine in which gas pressure is created by combustion to spin a turbine.

Turbo

An acronym for turbocharger.

Turbo Car

A car with a turbine engine.

Turbo Hydra-Matic

An automatic transmission by General Motors.

Turbo Hydro

A term used for Turbo Hydra-Matic.

Turbo Intercooler

A term used for intercooler.

Turbo Lag

The short delay in engine response when a driver punches the throttle in a turbocharged vehicle.

Turbocharger

A turbine-type supercharger driven by exhaust gases.