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FB3S
(submitted by FD3S
on the Fighters forums)
Commonly called FB. The 81-85 Mazda RX-7.
FC3S
(submitted by FD3S
on the Fighters forums)
Commonly called FC. The 86-91 Mazda RX-7.
FD3S
(submitted by FD3S
on the Fighters forums)
Commonly called FD. The 93-95 Mazda RX-7, though this model
was sold in Japan from 93-02.
Front
Mount
Usually refers to an intercooler
or oil cooler but
can refer to anything that mounts in the front of the car.
FSM
Factory Service Manual. This book is an in-depth repair manual
available at your dealer. It is much more detailed than your
typical Haynes manual or Chilton's.
Fuel
injector
Just like it sounds. Injects fuel into the engine via the
intake manifold. Usually, there is 1 injector per cylinder.
Injectors are rated in cc's for how much they can flow at
a certain amount of pressure, usually 42.5 PSI. They are also
either low impedance or high impedance depending on the ECU's
configuration. Side feed injectors sit inside of the fuel
rail while top feed injectors sit under the rail.
Fuel
pressure regulator
Also called an FPR. Determines how much fuel pressure is applied
to the injectors. Most NA
engines have an FPR that keeps the pressure constant at the
maker's setting. Boosted motors have an FPR that increases
fuel pressure as boost
increases in efforts to add fuel as the motor needs it. Increasing
fuel pressure will increase the amount of fuel that an injector
can flow.
Fuel
pump
Usually sits inside of the fuel tank and pumps fuel to the
engine. Fuel pumps are rated for flow in terms of gallons
per hour. The higher the rating, the more race worthy the
pump.
Fuel
Rail
Feeds fuel to the injectors. Basically a hollow rod that is
pressurized and distributes fuel to the injectors.
FWD
Front wheel drive. A vehicle where the motor powers the front
wheels.
Hairdryer
Slang for turbo.
Head
The "top end." This is where all of the valvetrain
resides. The head does the breathing as it is what takes in
the air and expels it. The intake
manifold and header bolt directly
to the head. The former brings air to it and the latter takes
it away. Here
is an example pic.
Header
See exhaust. Headers
bolt directly to the head and expel the engine's spent gases.
For most imports, the headers are a 4 to 1 design or a 4 to
2 to 1. A 4-1 design (pic)
does not join the pipes until the collector at the end so
it is literally 4 pipes into 1. This design is geared for
top end power in the upper revs. A 4-2-1 design (pic)
joins the 4 pipes into 2 pipes, then those 2 into 1. This
design will make more midrange power and is generally more
street oriented than a 4-1 since you don't have to rev as
high to make power, but the 4-1 generally makes more peak
power.
Head
Gasket
Seals the head to the block.
Hydrolock
Occurs when water enters the engine. Usually
caused by driving through a puddle with a car equipped with
a cold air intake
and no bypass valve.
The engine cannot compress the water and it locks the motor
up, potentially causing damage. Typically, hydrolocking a
motor will bend the rods.
IHE
(submitted by FD3S
on the Fighters forums)
Internet acronym for intake/header/exhaust,
the normal bolt-on mods.
Intake
The filter and piping that run to the intake
manifold. Stock cars usually have an airbox
that houses the filter while most aftermarket intakes use
a high flow cone filter. A short ram intake keeps the filter
in the engine bay while a cold air places it outside of the
engine bay, usually in the fender .
Intake
manifold
Distributes the air from the intake
to the head. Here
you can see an example 4 cylinder intake manifold. The plenum
is the large section at the top where the air collects and
the runners are the individual pipes where the collected air
runs to each cylinder.
Intercooler
Basically, a radiator for the air coming out
of the turbo. The turbo compresses the air which heats it
up. The turbo's air then runs through the pipes and into the
intercooler. The air outside of the car passes over the intercooler's
fins as you drive and it pulls heat off of the air inside
of the intercooler. The cooler air then enters the engine.
Usually configured in a top mount (pic)
config or a front mount (pic)
config. Top mount intercoolers usually have a scoop on the
hood or nearest body panel to direct air through them.
JDM
Japanese domestic market. Something that is sold in Japan.
JZA80
(submitted by FD3S
on the Fighters forums)
93-98 Toyota Supra.
