Glossary “spin” Definition:
To skid out of control by 180 degrees or more.
spikes
Glossary “spikes” Definition:
Areas on a gas trace that are above the cutpoint. Also refers to an electrical surge or back flow.
spider webbing
Glossary “spider webbing” Definition:
Technique accomplished by forcing paint through the air brush in a very thin, fibrous type spray.
spider gears
Glossary “spider gears” Definition:
See Spider
spider
Glossary “spider” Definition:
Set of gears in the differential that allow the rear wheels to rotate at different speeds as the vehicle is cornering.
spherical joint
Glossary “spherical joint” Definition:
Term used for ball joint.
SPFI
Glossary “SPFI” Definition:
Sequential – Port Fuel Injection.
speedometer
Glossary “speedometer” Definition:
An instrument, usually dash mounted, used to measure the speed of a vehicle.
speed shift
Glossary “speed shift” Definition:
1). To up shift a manual transmission without releasing the accelerator. 2). The art of up shifting a M/T without using the clutch.
speed sensor
Glossary “speed sensor” Definition:
Electrical device that can sense the rotational speed of a shaft or member and transmit this information to another device, such as a readout.
speed ratio
Glossary “speed ratio” Definition:
Comparison of the difference in speed between two moving parts such as impeller speed and turbine speed.
speed rating
Glossary “speed rating” Definition:
Tire rating that indicates the maximum safe vehicle speed that a tire will withstand.
speed of light
Glossary “speed of light” Definition:
Light waves travel at a speed approximately equal to 186,000 miles per second, or 10 ft. per nanosecond. It is the limiting speed of the universe
speed handle
Glossary “speed handle” Definition:
Tool that can be rotated quickly to remove or install loose bolts and nuts.
speed gear
Glossary “speed gear” Definition:
Driven gears located on the output shaft.
speed flare up
Glossary “speed flare up” Definition:
Operating condition where the engine speeds up without an increase in vehicle speed.
speed density
Glossary “speed density” Definition:
A method of calculating airflow by sensing engine load and intake manfold pressure and other engine sensors.
speed adjustment
Glossary “speed adjustment” Definition:
Term used for idle speed adjustment.
speed
Glossary “speed” Definition:
A rate-of-motion measured in mph or kph. The magnitude of velocity in a linear or rotary motion, regardless of direction.
spectrophotometer
Glossary “spectrophotometer” Definition:
A specially devised electronic tool that, when placed on an automotive finish, automatically determines and portrays a formula for that color. This formula will closely approximate the color being checked.