PN85561 Datasheet, PDF (3/8 Pages) Mallory performance club – MSD Pro-Billet Chevrolet V8 Distributor

INSTALLATION INSTRUCTIONS
3
CENTRIFUGAL ADVANCE CURVE
SELECTING THE ADVANCE
SPRINGS
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.
Timing Curve From Factory
Figure 2 The Factory Equipped Curve.
SPRING COMBINATION RATE OF ADVANCE
2- Heavy Silver
SLOWEST
1- Heavy Silver
1- Light Blue
1-Heavy Silver
1-Light Silver
2- Light Blue
1- Light Silver
1- Light Blue
2- Light Silver
FASTEST
FIGURE 4
A
B
C
D
E
F
Figure 3 Spring Combination Chart.
Figure 4 Advance Curves.
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