Mazda RX-7 - Cooling System Checks and Adjustments; Electrical System Checks and Adjustments; Ignition Wiring; Lubrication System Checks and Adjustments

ENGINE
B. Lubrieation
system.
Engine
oil.
A low ash content,
mineral oil is
recommended,
with
a
viscosity of
either
40
wt
or 10w-40.
The
oil
level should be
F
'r
5
mm.
Oilcooler.
The oil cooler
is easily
clogged
with debris
thrbwn up
from the
track such as
chunks of
tire rub-
ber or small stones.
To
maintain
proper
cooling
performance,
the
core
must
be
cleaned
periodically.
C.
Cooling system.
Like
the oil cooler, the
radiator
core
is
easily clogged
with debris
such as
chunks of tire
rubber
or
small stones. To
maintain cool-
ing
performance,
it
should be
cleaned
regularly.
Radiator
hose
and
clamps.
There
is
no specific
competition
hose
and
clamp, but to avoid
prob-
lems
use
high
quality
parts
and
maintain them in
good
condition.
3.
Coolant.
We do
not recommend
using
anti-
lreeze. For
racing
engines,
we
have found clean water to be the
most suitable coolant.
The coolant should be changed
regularly
and
drained
in the win-
ter to
avoid
f reezing.
4. V-belt
tension.
The V-belt tension
should be ad-
justed
for
a
deflection of 9-11
mm,
mdasured eoui-distant
between
the water
pump
and alternator.
D. Electricalsystem.
1.
Distributor.
The distributor
lead may be con-
nected
to
either
terminal on
the
ignotor. There
is
no
advance
mechanism with
this distributor.
2. lgnitor.
The
ignitor
should be
mounted in
an area
protected
from
heat, wa-
ter and
vibration. All wiring con-
nections should be
secure, and
all wiring
must
be
separated
f rom
high voltage wires by at
least 100
mm.
3. High tension
wires.
Pay
particular
attention
to the
connections and
terminals on the
high tension wires.
4. Spark
plugs.
The recommended spark
plug
is
NGK V-type, 11.5
heat range.
Note:
The correct spark
plug gap
is
0.7
-r
0.1
mm.
lgnition Wiring
5. lgnition
timing.
The
timing is
set
with the
drive
pulley
notch
and the
indicator
pin
on the
fronl
cover;
the notches
are denoted as shown
in the illus-
tration below:
plugs
al 20"
1.
2.
1.
2.
Connector
number
Wire
color
Tracer
{
I black/white lgnition switch
2
black/yellowStarter solenoid
terminal
J black/red lgnition
coil
positive
terminal
4
black Grounded
5
blue
Not
used
6
yellow
Not used
7
yellow/green
Not
used
8
red/white
Not used
I
white Not used
A
Distributor signaling
B
Distributor
signaling
The trailing
should
both
BTDC.
and
leading
be set to fire