ensure the resistance strength and
creeping characteristics against high ex-
haust gas temperature. In addition,
further cooling effects are secured by
taking in air through the duct on the
undercover, to cool the area around the
muffler, and by applying partial plate
thickness reduction. Since genuine tita-
nium mufflers are made of titanium alloy,
the surface color will change depending
on the driving conditions, which is not
unusual. Prior to shipping from factory, all
vehicles receive balance aligning for en-
gine, transmission, and clutch, as well as
quench driving of brake pads and rotors.
As a result, the muffler surface color may
differ depending on the vehicle.
Never remove the trunk carpet from the
vehicle for any reason. The carpet insu-
lates the vehicle interior from the heat of
the muffler and from the noise of the
transmission.
Never Allow Oil or Grease to Adhere to
the Titanium Muffler.
If the muffler is heated when oil or grease
adhere to the muffler surface, the color of
this area will be different from that of the
surrounding area. To remove the oil or
grease, check that the surface tempera-
ture of the muffler has cooled, wash the
area with a neutral detergent, wipe it with
a brake cleaner-sprayed clean shop cloth
and gently tap it with a dry shop cloth to
dry. Be careful not to allow the brake
cleaner to splatter on rubber parts, bum-
per, etc.
DRY CARBON FIBER PARTS (if so
equipped)
Because of the characteristics of the
material, the dry carbon fiber parts may
turn yellow due to exposure to ultraviolet
rays. The surfaces of dry carbon fiber
parts are coated with a special ultraviolet
protection paint. To maintain the appear-
ance of these parts, it is important to take
proper care of them.
NOTICE
. Do not use compound agents on
clear-coated dry carbon fiber
parts (such as the NISMO model’s
bumper, side sill protector, rear
spoiler, etc.).
. Do not use any chemical agents
(wax, coating agent, compound
agent, etc.) on matte-painted dry
carbon fiber parts (such as the
rear diffuser, a rear spoiler that is
of specifications other than
NISMO, etc.).
. When dry carbon fiber parts be-
come dirty, prepare a dilute
cleaning solution by mixing one
capful of mild detergent in a
bucket of water, and use that
mixture to clean the parts.
NOTE:
The surfaces of the dry carbon fiber
parts are lightly coated like a race car so
that you can feel the proper texture of
real carbon, which may feel rough. This
is normal.
ENGINE START AND STOP
This vehicle includes spark plugs that are
designed for high performance. For this
reason, if the engine is repeatedly started
and stopped over a short time, the spark
plugs may become fouled, making the
engine difficult to start. To prevent dimin-
ished starting performance, avoid start-
ing and stopping the engine repeatedly
during a short period of time.
GT-R Overview GTR-7