BDE
Bullseye
adjustable
exhaust
pulleys
will
revolutionize
the
way
you
think
of
cam
timing
tuning...
When
overhead
cam
cylinder
heads
and
engine
blocks
are
machined
to
flatten
their
head
gasket
surfaces
the
cams
are
moved
closer
to
the
crankshaft
and
consequently
the
cam
timing
relative
to
the
crankshaft
is
changed.
In
addition,
if
the
engine
is
a
V-type
(like
the
Z32's
VG30DE
is),
the
cam
timing
will
change
differently
for
each
side
of
the
engine.
This
cam
timing
change
usually
necessitates
degreeing
the
cams
with
an
adjustable
pulley
to
get
the
critical
cam
opening/closing
events
back
in
sync
with
the
crankshaft.
If
the
cams
are
degreed
using
the
adjustable
pulleys
that
have
been
available
until
now,
the
numbers
on
their
scales
would
have
no
relevance
whatsoever
to
their
original
zero
marks
when
finished.
To
add
to
the
confusion,
a
V-engine's
different
side
to
side
change
typically
leaves
the
final
degreed
setting
of
each
pulley
on
a
different
number
of
their
scales...
that
is
"if"
they
ever
came
with
a
zero
mark
reference.
Enter
the
BDE
Bullseye
Adjustable
Exhaust
Pulley
-
After
the
cams
are
degreed
to
the
crankshaft,
the
unique
BDE
outer
ring
adds
a
third
timing
element
which
can
be
rotated
to
align
with
the
scale's
zero
mark
so
future
adjustments
can
easily
be
made
without
the
hassle
of
remembering
where
the
original
degreed
setting
was.
Now
the
vernier
scale
actually
means
something
after
the
cam
degreeing
process.
For
fresh
builds,
the
pulleys
can
easily
be
set
to
true
zero
by
visually
centering
the
bullseye
and
then
setting
the
scale's
zero
to
the
ring's
timing
mark.
Other
features
of
the
Bullseye
Exhaust
Pulleys
are:
Works
with
'90-'93
Mitsubishi
CAS
only,
'94+
Hitachi
CAS
requires
slight
modification
for
clearance.
Email
BDE
for
additional
information.
Lighter
weight
than
the
original
pulleys
-
stock
weighs
2.04
lbs.
while
the
Bullseye
weighs
in
at
1.29
lbs.
ARP
stainless
steel
adjustment
bolts
with
over-sized
heads
utilize
washers
to
help
prevent
movement
of
the
assembly
while
tightening
the
bolts
and
to
prevent
damage
to
the
pulley.
Adjuster
bolt
holes
are
helicoiled.
Forget
about
cores,
BDE
adjustable
exhaust
pulleys
are
100%
machined
from
billet
6061
T6
aluminum
and
don't
reuse
any
stock
parts.
The
cog
is
hard
anodized
for
serious
protection
from
belt
wear
while
the
center
hub
and
ring
are
both
anodized
black
and
feature
easy
to
read
white
timing
marks.
Blemished
Sets
The
blemishes
are
purely
cosmetic
and
will
not
impair
performance.
The
parts
will
all
be
stamped
with
a
"B"
to
identify
them
as
blemished,
so
there
will
be
no
confusing
them
(see
pictures
for
reference).
