Unorthodox
Racing
pulley
for
the
1990-1996
300ZX
Twin
Turbo/Non
Turbo.
UR
pulleys
will
add
22-24HP
for
a
Twin
Turbo,
and
16-18HP
for
a
non
turbo.
These
are
by
far
the
best
bang
for
the
buck.
Crank
Pulley
w/
Overdrive
Pulley
are
included
with
Belts(which
are
shorter,
and
are
not
stock
sized
belts).
Developed
for
the
track
driven
300ZX
Z32
the
H.I.
Water
pump
pulley
addresses
a
cooling
problem
that
can
surface
when
you
install
an
Unorthodox
Racing,
ASP,
ATI
(street
version)
or
similar
sized
under
drive
crank
pulley.
When
you
install
a
smaller
then
stock
sized
aluminum
CRANK
pulley
you
reduce
not
only
the
speed
@
which
the
water
pump
turns
@
a
particular
RPM
but
also
the
speed
of
the
radiator
fan.
By
doing
so
you
doubly
reduce
your
cooling
capabilities
in
the
process.
This
change
is
not
always
perceived
by
the
casual
driver
because
the
temperature
gauge
on
the
Z32
is
not
linear,
it
tends
to
hover
around
the
8-9
o'clock
mark
during
most
street
use
by
design.
However
the
effect
of
the
installing
a
smaller
then
stock
crank
pulley
can
be
seen
if
you
use
nProbe/Consult/Hardware
or
similar
data
logging
software/hardware
-
temeratures
rise
across
the
board
but
esp.
at
stop
&
go
idle
and
at
high
load
/
track
conditions.
The
solution
-
H.I.
has
introduced
an
overdrive
pulley
for
the
water
pump
to
be
used
in
conjunction
w.
a
smaller
then
stock
main
crank
pulley.
Their
pulley
is
about
15%
smaller
then
a
stock
sized
Twin
Turbo
water
pump
pulley
and
returns
the
water
pump
&
fan
speed
to
the
same
amount
of
circulation
per
engine
speed
as
the
Nissan
engineers
intended.
On
modified
or
track
driven
cars
that
are
pushed
to
their
cooling
limits
this
can
be
answer
to
maintaining
proper
cooling
system
performance
and
keeping
your
motor
out
of
the
red.
Technical
Details:
*
Works
on
both
TwinTurbo
&
NA
models
*
Light
weight
&
strong
T6061
Aluminum
*
5.4oz.
vs.
10.2oz.
stock
unit
*
Clear
anodized
for
anti-corrosion
*
OEM-like
fitment
*
Includes
shorter
drive
belts
*
Precision
made
in
the
USA
This
P/N
can
be
used
for
the
90-93
Twin-Turbo
Engines
HOWEVER
does
NOT
accommodate
the
later
model
TT
years,
94-96.
Though
it
does
for
any
90-96
NA
300ZX
fit
with
a
turbo.
For
the
Kit
that
does
accommodate
the
94-96
TT
Models,
please
refer
to
this
P/N:
CU1061A.WS10161
