User Manual

INSTALLATION INSTRUCTIONS 3
M S D • W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
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 wi th two He avy 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 curv e to
your particular application. Refer to the Spring
Combination Chart (Figure 3) for combinations
that can be achieved.
To change th e 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.
Figure 4 Advance Curves.
Figure 2 The Factory Equipped Curve.
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
Timing Curve From Factory