Installation Owner's manual

INSTALLATION INSTRUCTIONS 3
M S D I G N I T I O N • WWW .M SD IG N IT IO N. CO M • ( 91 5) 85 7- 52 0 0 • FA X (9 15 ) 8 57 -3 34 4
CENTRIFUGAL ADVANCE CURVE
SELECTING THE ADVANCE SPRINGS
Figure 2 The Factory Equipped Curve.
Timing Curve From Factory
Figure 4 Advance Curves.
Figure 3 Spring Combination Chart.
SPRING COMBINATION RATE OF ADVANCE FIGURE 4
2- Heavy Silver SLOWEST A
1- Heavy Silver B
1- Light Blue
1-Heavy Silver C
1-Light Silver
2- Light Blue D
1- Light Silver E
1- Light Blue
2- Light Silver FASTEST F
The rate, or how quick the advance comes in
is determined by the type of springs which are
installed on the distributor. The MSD distributors
are equipped with two Heavy Silver springs
installed. These will give you the slowest
advance curve possible (Figure 2). The parts
kit contains two additional sets of springs which
can be used to match the advance curve to
your particular application. Refer to the Spring
Combination Chart (Figure 3) for combinations
that can be achieved.
To change the springs, remove the cap and rotor
and use needlenose pliers to remove the springs.
Be sure the new springs seat in the groove on
the pin.