Glossary “S-Port” Definition:
Carburetor port to take off ported vacuum to control spark advance.
s
sport utility vehicle (SUV)
Glossary “sport utility vehicle (SUV)” Definition:
Truck-like vehicle with a box-like open or enclosed body, generally having a short wheel base, and four-wheel drive.
Sports Car Club of America (SCCA)
Glossary “Sports Car Club of America (SCCA)” Definition:
A major road-racing sanctioning body.
spoons
Glossary “spoons” Definition:
An instrument used to pry out damage, struck with a hammer to drive out damage, and as a dolly hard to reach areas.
spool
Glossary “spool” Definition:
1). Final drive without any differential action. 2). Term used for locked rear end.
spool valve
Glossary “spool valve” Definition:
Used to control oil flow in an A/T.
spongy brake pedal
Glossary “spongy brake pedal” Definition:
Condition where the brake pedal is not solid when depressed, but bounces softly. This is caused by air in the hydraulic lines, or distortion or stretching of the connecting parts, or swelling of the hydraulic hoses.
spongy pedal
Glossary “spongy pedal” Definition:
Term used for spongy brake pedal.
spontaneous combustion
Glossary “spontaneous combustion” Definition:
The process by which a material ignites and burns by itself.
spoiler
Glossary “spoiler” Definition:
1). Aerodynamic device that “spoils” the airflow over the vehicle. 2). Device attached below the front bumper to reduce drag by deflecting air away from the vehicle. 3). Device mounted on the rear deck to provide a downward force.
spoke
Glossary “spoke” Definition:
The wire-like bracing between the hub and the rim of a wire wheel.
spokes
Glossary “spokes” Definition:
Wire wheels.
sponge lead
Glossary “sponge lead” Definition:
Lead with many small holes used to make a surface porous or sponglike for use in battery negative plates.
spoiled hardener
Glossary “spoiled hardener” Definition:
Hardener that remains thin and watery after throughly kneading it.
split pin
Glossary “split pin” Definition:
A round, split-spring steel tubular roll pin used for locking purposes, such as a gear to a shaft.
split point
Glossary “split point” Definition:
The pressure at which a proportioning valve closes during brake application and reduces the rate at which further pressure is applied to the rear drum brakes.
split sump
Glossary “split sump” Definition:
Term used for split crankcase.
split torque converter
Glossary “split torque converter” Definition:
Design having a simple planetary gear set to divide engine torque between mechanical and hydraulic operation.
split valve guide
Glossary “split valve guide” Definition:
Two-piece valve guide used in some older flathead engines with mushroom valves.
split lock washer
Glossary “split lock washer” Definition:
Washer used under nuts to prevent loosening by vibration. The ends of these spring hardened washers dig into both the nut and the work to prevent rotation.