Mallory Ignition SPRINTMAG, SPRINTMAG II User Manual

MAGNETO IGNITION SYSTEMS

SUPER-MAG

®

II SPRINTMAG

®

SUPER-MAG®III SPRINTMAG®II
SUPER-MAG

®

IV SPRINTMAG®III

INSTALLATION PROCEDURE FOR SINGLE AND DUAL IGNITION SYSTEMS

Step 1

Rotate the engine to top dead center (TDC), #1 cylinder on
compression stroke. Remove the magneto cap. Position the
magneto in the engine with the rotor pointed toward the
desired #1 plug wire position. CAUTION: BE SURE THE
MAGNETO IS FULLY SEATED. Set the distributor hold
down clamp in place but do not tighten at this time.

SPRINTMAG®, SPRINTMAG®II and SPRINTMAG®III:

Be sure the magneto pointer aligns with (zero) on the timing
plate on the generator. Also, be sure the band clamp is tight.

SUPER-MAG

®

II, III, AND IV, LEFT-HAND ROTATION:

Be sure the magneto pointer aligns with the left side edge
of the timing plate on the generator. Also, be sure the band
clamp is tight.

SUPER-MAG

®

II, III, AND IV, RIGHT-HAND ROTATION:

Be sure the magneto pointer aligns with the right-side edge
of the timing plate on the generator. Also, be sure the band
clamp is tight.

Step 2

Static Timing (TDC Method)

Connect the static timer (buzz box) to the generator (see
Figures 1 and 2). Turn static timer ON. If the buzzer begins
sounding, turn the magneto in either direction until the
buzzer is silent.

LEFT-HAND ROTATION: While the buzzer is silent, hold the
rotor clockwise and slowly turn the magneto counterclockwise.
Stop turning the magneto when the buzzer begins sounding.
Tighten the distributor hold-down clamp.

RIGHT-HAND ROTATION: While the buzzer is silent, hold
the rotor counterclockwise and slowly turn the magneto
clockwise. Stop turning the magneto when the buzzer
begins sounding. Tighten the distributor hold-down clamp.

FORM 1018M (REV A) 10/09

Step 3

Make a mark on the generator below the rotor. Install the
magneto cap. The post on the magneto cap over the mark
made on the generator is # 1 cylinder. Install the spark plug
wires in the sequence of the firing order.

Step 4

SET TIMING. Loosen the band clamp.

SPRINTMAG®AND SPRINTMAG®II: Turn the generator
to align the pointer and timing plate to the desired initial
timing. Tighten the band clamp.

SPRINTMAG

®

III: Rotate crank hub to align with timing

mark and pointer. Use static timing method to set timing.
Recheck timing with timing light above 3500 RPM. By
leaving the pointer on "0", the timing may be reset without
the use of a timing light. To reset timing, loosen the band
clamp and rotate the generator housing.

SUPER-MAG®II, III, IV: Turn the generator to align the
pointer and timing plate to the desired initial timing. Each
mark on the timing plate is 2 degrees. Tighten the band clamp.

NOTE: Timing may be checked with most timing lights
after installation is completed.

Step 5

WIRING PROCEDURE

Connect long harness to the generator. Refer to WIRING
DIAGRAMS on pages 2 and 3 for all additional wiring.

INSTALLATION INSTRUCTIONS

1MALLORY IGNITION www.malloryracing.com

GENERAL INFORMATION

• Closely monitor spark plugs and spark plug gaps for
maximum performance. Set spark plug gaps at .018" to
.022".

• 16AWG/600V or larger wire must be used on all additional
wiring. All grounds must be made to the engine block. Do
not ground to chassis or anodized surfaces.

WARNING

• A KILL SWITCH MUST BE USED TO STOP THE ENGINE
FROM RUNNING.

• NEVER CONNECT ANY PART OF THIS IGNITION TO 12
VOLTS.

• Disconnect and remove generator before arc welding
on the vehicle.

• On dual ignition systems, each ignition system must run
independent of the other.

• To prevent internal damage to transformers, the
transformer must be mounted with the high tension lead
coming from the bottom and positioned no closer than

2.5" from the nearest metal surface.

SPRINTMAG AND SPRINTMAG II MAGNETO STARTING TIP

A magneto normally requires good crankshaft speed to
produce enough ignition output to start the engine. When the
magneto is hot, higher crankshaft speeds are required. The
Mallory Magneto Start Assist Box is designed to electronically
connect the magneto system to the engine's starter solenoid.
During starting, the Magneto Start Assist Box "boosts" the
magneto output, creating a strong starting spark even at very
low cranking RPM. IMPORTANT: The magneto must be
modified at the factory before it can be used with the
Magneto Start Assist Box. Ship your magneto to:

Prestolite Performance
10601 Memphis Ave. #12
Cleveland, OH 44144

FIGURE 1

2 www.malloryracing.com MALLORY IGNITION

SPRINTMAG®III MAGNETO

ORANGE

WEATHERPACK CONNECTORS

HARNESS
PN 28862

SET STATIC TIMING
(BUZZ) FROM HERE

HARNESS
PN 28998

TO ENGINE

GROUND

RED

TO ENGINE GROUND

KILL SWITCH PN. 26074
NOTE: ON A DUAL MAG ENGINE, A KILL SWITCH IS REQUIRED FOR
EACH MAG. DO NOT USE ONE KILL SWITCH TO CONTROL BOTH MAGS.

YELLOW

3MALLORY IGNITION www.malloryracing.com

FIGURE 2

SUPERMAG®II, III, AND IV

SPRINTMAG®AND

SPRINTMAG

®

II MAGNETO

FIBER-OPTIC PICK-UP (IF USED)

TO ENGINE

GROUND

TO ENGINE

GROUND

RED

ORANGE

YELLOW

HARNESS
PN 28862

SET STATIC TIMING
(BUZZ) FROM HERE

HARNESS
PN 28998

KILL SWITCH PN. 26074
NOTE: ON A DUAL MAG ENGINE, A KILL SWITCH IS REQUIRED FOR
EACH MAG. DO NOT USE ONE KILL SWITCH TO CONTROL BOTH MAGS.

4 www.malloryracing.com

MALLORY IS A DIVISION OF PRESTOLITE PERFORMANCE
10601 MEMPHIS AVE. #12, CLEVELAND, OH 44144

216.688.8300 FAX [phone]

FORM 1018M
(REV A) 10/09

Made in U.S.A.

Printed in U.S.A.

GENERATOR APPLICATIONS

SERVICE PARTS

DISTRIBUTOR CAP
STYLE AND DESCRIPTION

RH 8-cyl Stack Cap
LH 8-cyl Stack Cap
RH 8-cyl Pro Cap
LH 8-cyl Pro Cap
RH 8-cyl Large Flat Cap
LH 8-cyl Large Flat Cap
RH 8-cyl Flat Cap
LH 8-cyl Flat Cap
RH 8-cyl 208 Cap (HEI Style)
LH 8-cyl 208 Cap (HEI Style)
RH 4-cyl Stack Cap
LH 4-cyl Stack Cap
RH 4-cyl Pro Cap
LH 4-cyl Pro Cap

DESCRIPTION PART NO.

Transformer 28900A
Transformer Bracket (replacement) 29190
Wire Harness (orange/yellow) Long 28862
Wire Harness (orange/yellow) Short 28998
Kill Switch (single magneto ignition) 26072
Kill Switch (dual magneto ignition) 26073
Kill Switch for SPRINTMAG®, SPRINTMAG® II and III 26074
Replacement Contact Block for Kill Switch PN 29072 and 26073 26076
Wire Harness for SPRINTMAG® III (weatherpack) Long 28861
Wire Harness for SPRINTMAG® III (weatherpack) Short 28860
Drive Flange for SPRINTMAG® and SPRINTMAG® II 2-Pin 26007A
Drive Flange for all SUPERMAG® 4-Pin 26007B
Drive Flange for SPRINTMAG® III 26007C
Lock-Out (Spider) for SPRINTMAG® III 29073
Advance Lock-Out for 2 or 4 Pin Drive Flange 28103A
Band Clamp 26041A
Band Clamp (small) 26041B
Static Timer 28355

SUPER-MAG® IV

PART NO.

29164

29174
29164-3
29174-3
29164-1
29174-1

—
—
—

—
29144
29154

29144-3
29154-3

SUPER-MAG® III

PART NO.

29160

29170
29160-3
29170-3
29160-1
29170-1

—
—
—

—
29161
29171

29161-3
29171-3

SPRINTMAG® II

PART NO.

29230
29231
29228
29229

—
—
—
—
—

—
29234
29235
29232
29233

SPRINTMAG®

PART NO.

29166
29167

—
—
—

—
29162
29163

—

—
29168
29169

—

—

SPRINTMAG® III

PART NO.

—

—
29238
29239

—

—

—

—
29236
29237

—

—

—

—

DISTRIBUTOR CAP DIST. CAP ROTOR PART NO. CAP ADAPTER/CONVERSION KIT KIT PART NO.
STYLE/DESCRIPTION PART NO. RH LH DESCRIPTION RH LH

SUPERMAG® II, III, AND IV MAGNETOS
8-cyl Stack Cap 205 28995 28995A
8-cyl Large Flat Cap 28709 29030 29031 Large Flat Cap Conversion Kit 29374 29375
8-cyl Pro Cap 29745 29772M 29773M Pro Cap Conversion Kit 29771 29774
Replacement Rotor w/Adapter Screw-Together — 29772C 29773C
4-cyl (8 lobe breaker point cam) Stack Cap, RH 256 28995 — — —
4-cyl (8 lobe breaker point cam) Stack Cap, LH 257 — 28995A — —
4-cyl (4 lobe breaker point cam) Stack Cap 207 28995 28995A — —
4-cyl (4 lobe breaker point cam) Pro Cap 29741 29772M 29773M — —

SPRINT-MAG® MAGNETO

8-cyl Stack Cap 204 28995 28995A — —
8-cyl Flat Cap 221F 28995 28995A Flat Cap Conversion Kit 29383 29383
4-cyl Stack Cap 206 28995 28995A — —

SPRINT-MAG® II MAGNETO

8-cyl Stack Cap 205 28995 28995A — —
8-cyl Pro Cap 29745 29772C 29773C Pro Cap Conversion Kit 29771 29774
4-cyl Stack Cap 207 28995 28995A — —
4-cyl Pro Cap 29741 29772C 29773C — —

SPRINT-MAG® III MAGNETO

8-cyl 208 Cap (HEI Style) 208 29340* — Two Piece — —
8-cyl 208 Cap (HEI Style) 208 28995 28995A One Piece after 7/99 — —
8-cyl Pro Cap 29745 29772C 29773C 29771 29774

TUNE-UP PARTS

DESCRIPTION PART NO.
Contact Point — All (gap .016") 25758M
Condensor — All SPRINTMAG Magnetos 28005A
Condensor — SUPERMAG® II 28005A
Condensor — SUPERMAG® III, IV 28005
Adapter/Shield for Pro Cap 29749
Rotor Adapter for Pro Cap 29038
Wire Retainer for Pro Cap 29744