PN8578 datasheet(4/8 Pages) MALLORY

Part #	PN8578

Description	MSD Pro-Billet Small Diameter Ford V8 Distributo

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Manufacturer	MALLORY [Mallory performance club]

Direct Link	http://mallory-ignition.com/

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INSTALLATION INSTRUCTIONS

MSD • W W W. M S D PE R F OR M A NC E . C OM • ( 91 5 ) 8 5 7 -5 2 0 0 • F AX ( 9 15 ) 8 57 - 33 4 4

Figure 6 Changing the Advance Stop Bushing.

SELECTING THE ADVANCE STOP

BUSHING

Five 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.

LOCKING OUT THE CENTRIFUGAL

ADVANCE

1. Remove the cap and rotor.

2. Remove the advance springs, weights and

advance stop bushing from the advance assembly.

3. Remove the roll-pin from the shaft and slide the

retaining sleeve down. It should not be necessary

to remove the gear (Figure 7).

4. Slide the shaft two inches out of the housing.

5. Rotate the shaft 180° and insert the advance stop

bushing pin into the small hole on the advance

plate (Figure 8).

Figure 6 Locking Out the Centrifugal Advance.

Figure 8 Locking Out the Advance.

Figure 7 Removing the Retaining Sleeve.

Figure 5 Advance Stop Bushing Chart.

BUSHING SIZE

APPROXIMATE

CRANKSHAFT

DEGREES

Red-Smallest

28

Silver

25

Green

23

Blue

21

Purple

19

Black-Largest

18

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PN8578 Datasheet(PDF) 4 Page - Mallory performance club

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