Glossary “longitudinal” Definition:
Mounted front to back, as in a RWD vehicles engine.
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long, short arm suspension
Glossary “long, short arm suspension” Definition:
Front suspension system where the upper control arm is shorter than the lower control arm, allowing each wheel to compensate for changes in the road surface while not greatly affecting the opposite wheel in a manner that allows the wheel and tire assembly to rise and fall vertically as it goes over bumps.
long spray distance
Glossary “long spray distance” Definition:
A spray gun distance that causes a greater percentage of the thinner to evaporate, resulting in orange peel or dry spray.
longbed
Glossary “longbed” Definition:
Cargo area of a long-wheelbase pickup truck.
LONG FT1
Glossary “LONG FT1” Definition:
Current BANK 1 fuel trim adjustment (kamref1) from stoichiometry which is considered LONG TERM.
LONG FT2
Glossary “LONG FT2” Definition:
Current BANK 2 fuel trim adjustment (kamref1) from stoichiometry which is considered LONG TERM.
long gear
Glossary “long gear” Definition:
Final drive with a low gear ratio providing high gearing.
long hair fiberglass filler
Glossary “long hair fiberglass filler” Definition:
A fiberglass filler with long strands of fiberglass for even more strength.
long term fuel trim
Glossary “long term fuel trim” Definition:
The long term fuel injector pulse width compensation the engine controller has stored to maintain minimum emissions output. Long term fuel trim drives Short Term Fuel Trim to maximum operating efficiency.
logic probe
Glossary “logic probe” Definition:
A probe used for circuit analysis, displaying digital levels of 1 and 0 with light outputs.
long and short term adaptive's
Glossary “long and short term adaptive’s” Definition:
See long term fuel trim.
long arm
Glossary “long arm” Definition:
Throw of a crankshaft after it has been stroked.
long block
Glossary “long block” Definition:
Assembled engine block that contains all of the components from the intake manifold to the exhaust ports..
LOF
Glossary “LOF” Definition:
Lube, Oil and Filter
logic
Glossary “logic” Definition:
Decision or action made by deductive reasoning.
lockup
Glossary “lockup” Definition:
The point at which braking power overcomes the traction of the vehicle’s tires and skidding occurs, causing loss of control, lost stopping distances, and flat-spotting of the tires.
lockup clutch
Glossary “lockup clutch” Definition:
Type of clutch in which the torque converter turbine is locked up with the engine, eliminating slippage.
lockup torque converter
Glossary “lockup torque converter” Definition:
Fluid clutch designed with a clutching assembly in an A/T, to improve coupling efficiency at a predetermined vehicle speed or load.
lockwashers
Glossary “lockwashers” Definition:
Helical spring lockwashers keep fasteners from loosening by appling pressure to them. Lockwashers lose tension over time and should be replaced after one use.
Loctite
Glossary “Loctite” Definition:
A trade name for a line of sealants and adhesives that are popular in the automotive industry.