1975 Datsun 280z FSM - Spooled up Racing

Engine Electrical System
Fig. EE-64 Terminal block
PHASE DIFFERENCE
(Non-California models only)
To check phase difference, install
distributor on engine and proceed as
follows:
1. Disconnect engine harness red
wire connector from water temperature
switch.
2. Ground engine harness red wire
to engine body with a suitable lead
wire. See Figure EE-65.
EE370
Fig. EE-65 Short-circuit of advance
control relay
3. With engine idling, adjust ignition
timing by rotating distributor to
specifications.
4. With engine harness red wire connector
disconnected, idle engine and
check that phase delay is 6 degrees in
terms of crankshaft angular displacement.
To correct as follows:
(1) Referring to Figure EE-66, turn
out adjuster plate screws 1/2 to 2
turns. The screws are located at pickup
coil assembly on retarded side.
(2) Turn adjuster plate until correct
phase difference is obtained. Ignition
timing is retarded when plate is turned
counterclockwise.
Note: Refer to graduations on breaker
plate to make adjustment easier.
One graduation corresponds to a
crankshaft angular displacement of
4 degrees.
Fig. EE-66
Crank angle 4
EE371
Adjusting phase difference
224
Fig. EE-67 Phase difference
adjusting scale
(3) Make sure that the ignition
timing of advanced side meets specifications.
(4) After adjustment, connect
engine harness red wire to water temperature
switch.
ADVANCE MECHANISMS
*C Specifications ^
^^~~~-~-----__^^ Type
Item "^"~-~-^^^
D6F4-01
D6F4-02
D6F4-03
Applied model
Non-California
California
Transmission
Manual
Automatic
Manual and Automatic
Vacuum advance
[Distributor degrees/distributor
mmHg (inHg)]
0°/200 (7.9)
7.5°/350(13.8)
0°/250 (9.8)
5.5°/350(13.8)
0°/200 (7.9)
7.5°/350(13.8)
Centrifugal advance
[Distributor degrees/distributor
rpm]
0°/600
10°/1,360
0°/600
8.5°/l,250
EE-29
I