MSD 83921 HVC Professional Racing Distributor for Chevrolet Installation - Manual (Page 2)

INSTALLATION INSTRUCTIONS
M S D I G N I T I O N • w w w . m s d i g n i t i o n . c o m • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • FA X ( 9 1 5 ) 8 5 7 - 3 3 4 4
Figure 2 Wiring a Complete Redundant System.
RE
D
INDICATES CONNECTION
RE
D
TO
IGNITION
SWITCH
12VOLTS
AUTOMATIC COIL
SELECTOR
PN 8210
SPDT SWITCH
PN 8807
PRIMARY
GROUND
BROWN
TO TACH*
BROWN
TO TACH*
COIL
GROUND
ORANGE (+)
BLACK (-)
ORANGE (+)
BLACK (-)
HEAVY RED TO BATTERY (+)
TO GROUND (-) HEAVY BLACK
WHITE
TO REV CONTROL PN 8738
HEAVY RED TO BATTERY (+)
TO GROUND (-) HEAVY BLACK
WHITE
TO REV CONTROL PN 8738
COIL
BLACK
BLACK
* TO SWITCH TACH SIGNALS, MSD OFFERS A TACH SPLITTER, PN 8911.
SECONDARY
MAG PICKUP
(NOT USED)
MAG PICKUP
(NOT USED)
WHITE
BROWN
BROWN
RED
RED
WHITE
TO GROUND
PN 8857 HARNESS KIT
HVC PRO-BILLET
DISTRIBUTOR
Figure 3 Adjusting the Secondary Pickup.
SerViCe
MSD designed the HVC Pro-Billet Distributor to be completely
serviceable. Replacement parts are listed below.
ADJUSTING
ECCENTRIC
SECONDARY
PICKUP
ALIGNMENT
INDICATOR
An unfinished reluctor, PN 83491 is available. This reluctor does not have
the individual cylinder paddles machined. Individual cylinder timing values
can be determined on the dyno using our electronic controls. These values
can then be machined into the reluctor.
Figure 4 Unfinished
Reluctor, PN 83491.
sERvIcE PARTs:
4 - Pin Deutsch Connector - PN 8181
Rotor - PN 8484
Extension Harness (set) - PN 8857
Reluctor Installation/Removal Tool - PN 83492
Finished Reluctor - PN 8349
Unfinished Reluctor - PN 83491
Pickup Assemblies
CW - Lower Chevrolet - PN 87571
CW - Upper Chevrolet - PN 87573
CCW - Lower Ford/Mopar/Toyota - PN 87572
CCW - Upper Ford/Mopar/Toyota - PN 87574
SerViCe PrOCeDure
LowER HousING
To replace the distributor bearings and seals, the lower housing must be disassembled. Both disassembly
and re-assembly require the lower housing to be heated for proper clearance. Review the following procedure
before starting the service. Figures 5 and 6 show exploded views of the five distributors available.
Bronze Gears
Chevrolet
Standard - PN 8471
+0.006" - PN 8472
+0.009" - PN 84722
+0.012" - PN 84723
+0.015" - PN 84724
Ford Windsor
Standard - PN 8585
Chrysler
Standard - PN 8525
+0.006" - PN 8526
Toyota
N/A: Contact TRD for
information