Glossary “high pedal” Definition:
1). Position of a brake pedal when it is adjusted near the top of its upward travel. 2). Position of the clutch pedal when engaged in high gear in the transmission of a Model T.

Glossary “high performance speed rating” Definition:
Rating system used for tires designed for high-performance cars such as SR, HR, and VR.

Glossary “high lift rocker arms” Definition:
Rocker arms that provide increased valve lift.

Glossary “high load condition” Definition:
Those instances when the A/C system must operate continuously, at maximum capacity, to provide the cool air required.

Glossary “high modulus belt” Definition:
Belts designed with special reinforcing members with a high degree of elasticity such as steel, fiberglass, or aramid fiber.

Glossary “high mounted coil spring suspension” Definition:
Type of suspension having a coil spring located above the upper control arm, with the top end of the spring contacting the car body inside a spring tower.

Glossary “high output” Definition:
Replacement device having a higher output than the original equipment device.

Glossary “high gearing” Definition:
Drive ratio that applies maximum engine output at a relatively high road speed.

Glossary “high heat load” Definition:
Refers to the maximum amount of heat that an be absorbed by a refrigerant as it passes through the evaporator.

Glossary “high impedance meter” Definition:
Meter that has a high opposition to the flow of electrical current on the voltage scale usually more than 10 M Ohms.

Glossary “high lift cam” Definition:
Camshaft that provides increased valve lift.

Glossary “high cordline belt” Definition:
Higher quality belt with the tensile cord above center.

Glossary “high efficiency particulate air filter (HEPA)” Definition:
A filter system that is 99.7% efficient in trapping particles.

Glossary “high efficiency spray gun” Definition:
Designed to reduce VOC emissions by only using 10 psi of air pressure at the gun head. Also called HVLP for high volume, low pressure or LVLP for low volume, low pressure.

Glossary “high energy ignition (HEI)” Definition:
A General Motors high-voltage ignition system.

Glossary “high gear” Definition:
Condition achieved from a planetary gear set when any two members, sun gear and planet gears or planet gears and internal gears, are locked together.

Glossary “high clutch” Definition:
Clutch assembly which must be applied in order to provide the automatic transmission with high range or direct drive.