MSD 8529 Oldsmobile V8 Ready to Run Distributor Installation - Manual (Page 4)

4 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 7 Locking Out the Advance.
Figure 5 Advance Stop Bushing Chart.
BUSHING SIZE APPROXIMATE
CRANKSHAFT
DEGREES
Red-Smallest 28
Silver 25
Blue 21
Black-Largest 18
SELECTING THE ADVANCE STOP BUSHING
Three different advance stop bushings are supplied
in the distributor kit. The distributor comes with a
Blue (21°) bushing already installed. If a different
amount of centrifugal advance is desired, follow the
next procedure to change the bushings. The chart
in Figure 5 gives the size and approximate degrees
for the corresponding bushings.
CHANGING THE ADVANCE STOP BUSHINGS
1. Remove the distributor cap and rotor.
2. Remove the locknut and washer on the bottom
of the advance assembly (Figure 6).
3. Remove the bushing and install the new one.
Install the washer and locknut, do not
overtighten.
Figure 6 Changing the Advance Stop Bushing.
LOCKING OUT THE CENTRIFUGAL ADVANCE
1. Remove the advance springs, weights and
the advance stop bushing from the advance
assembly.
2. Remove the roll-pin from the drive gear and
remove the gear from the shaft.
3. Slide the shaft two inches out of the housing.
4. Rotate the shaft 180° and insert the advance stop
bushing pin into the small hole on the advance
plate (Figure 7).
5. Install the locknut and washer to the advance stop
bushing pin.
6. Install the drive gear and roll-pin.