Glossary “side gears” Definition:
Bevel gears that transfer power from the differential pinion gears to the splined axle shafts, providing differential action during turns.
side draft spray booth
Glossary “side draft spray booth” Definition:
Moves air sideways over the vehicle. An air inlet in one wall pushes fresh air into the booth. A vent on the opposite wall removes the booth air.
side draft carburetor
Glossary “side draft carburetor” Definition:
A carburetor having one or more horizontal barrels.
side clearance
Glossary “side clearance” Definition:
The clearance between the cheeks of the crankshaft journal and the connecting rod.
side bolt mains
Glossary “side bolt mains” Definition:
Side mounted main bearing bolts that increase the rigidity of the lower end.
SIC
Glossary “SIC” Definition:
Standard Industrial Classification
siamesed cylinder bores
Glossary “siamesed cylinder bores” Definition:
Bore design where the cylinder walls of an adjacent cylinders are attached to each other.
siamese runners
Glossary “siamese runners” Definition:
When one runner feeds two neighboring cylinders.
siamese ports
Glossary “siamese ports” Definition:
Intake or exhaust ports inside the cylinder head where two cylinders are feeding through one port.
siamese
Glossary “siamese” Definition:
1). Two exhaust pipes joined together. 2). Cylinders in an engine block that are cast so closed together that there is no room for a coolant passage between them. 3). Two adjacent valves in a cylinder head that is served by a single port.
SIACM
Glossary “SIACM” Definition:
Side Impact Airbag Control Module
Si
Glossary “Si” Definition:
1). Silicon 2). Acronym for spark ignition. 3). Sequential Injection
shutter valve
Glossary “shutter valve” Definition:
A valve, located in the intake manifold, which opens and closes an intake path. When the valve is opened, the path that the intake airflow travels increases. When closed, the path shortens. This action improves torque characteristics at low and high engine rpm.
shut down
Glossary “shut down” Definition:
To stop an engine.
shunt winding
Glossary “shunt winding” Definition:
Bypass winding found on some alternators.
shunt
Glossary “shunt” Definition:
Parallel electrical connection or circuit.
shudder
Glossary “shudder” Definition:
Low frequency vibration that is felt in the floor and/or steering wheel during light brake application.. Common vehicle speed range between 8 and 40 mph.
SHRT FT22
Glossary “SHRT FT22” Definition:
Current BANK 2 fuel Trim adjustment (lambse 2) from stoichiometry which is considered SHORT Term.
SHRT FT21
Glossary “SHRT FT21” Definition:
Current BANK 2 fuel Trim adjustment (lambse 1) from stoichiometry which is considered SHORT Term.
SHRT FT12
Glossary “SHRT FT12” Definition:
Current BANK 1 fuel Trim adjustment (lambse 2) from stoichiometry which is considered SHORT Term.