674M Datasheet, PDF (1/4 Pages) Mallory performance club – HYFIRE® VIIS SPORTSMAN CD IGNITION SYSTEM

FORM 1468 (REV. B) 9/00
INSTALLATION INSTRUCTIONS
®
HYFIRE^® VIIS SPORTSMAN
CD IGNITION SYSTEM
Part No. 667S
4–12 Cylinder
Notice: This product is legal for sale or use only on vehicles which may never be used on highways.
The HYFIRE^® VIIS Sportsman CD Ignition Controls are not compatible with distributorless systems or
positive ground applications. The RPM Limiter in the HYFIRE^® VIIS Sportsman CD Ignition Controls will not
work properly with odd-fire or semi-even fire V6 applications. The HYFIRE^® VIIS Ignition System is not
designed for marine use.
GENERAL INFORMATION
The RPM limiter in the HYFIRE^® VIIS Ignition System is not recommended as
an engine speed governor. The use of the RPM limiters is not recommended for
applications equipped with a catalytic converter. Similarly, forcing engine RPM
past the RPM limiter continuously for long sustained intervals can cause
problems resulting from fuel build up in the exhaust system that may adversely
affect the application.
Ignition Ballast Resistor / Loom Resistance Wire
The HYFIRE^® VIIS Ignition Ignition’s performance is not affected by the presence
of the factory ignition resistors or ignition ballast resistors in the wire from the
ignition switch. It is not necessary to install ignition ballast resistors as specified
by the instructions for the particular distributor.
Spark Plug Gaps
For street applications, use your engine manufacturer’s specifications. For racing
applications, start with your engine manufacturer’s specifications, then experi-
ment with the plug gap to achieve maximum performance.
Electric Welding
Disconnect the HYFIRE^® VIIS Ignition System and unplug any distributor
harnesses (if possible) before any welding is done on the vehicle.
External RPM Limiters
Mallory RPM Limiter Part Nos. 641-4, 641-6, 641-8, 642, 643 and 644 WILL
NOT function with the HYFIRE^® VII Ignition Systems.
Ignition Coils
The HYFIRE^® VIIS Ignition System is designed to work with Mallory
PROMASTER^® Coil Part No. 28880. Avoid using any other type of ignition coil.
Spark Plug Wires
YOU MUST USE suppression type (carbon core, spiral core) spark plug wire.
We recommend spiral core ignition wire, such as Mallory PRO SIDEWINDER^®
Ignition Wire. Suppression type spark plug wires prevent false triggering and the
possibility of premature ignition or accessory failures.
Mallory PRO TACH^® I, IV and IV
The tachometer and shift light will work with the HYFIRE^® VII Ignition Systems.
However, the RPM limiter WILL NOT function with the HYFIRE^® VII Ignition
Systems. Turn the LIMIT RPM knob slightly past 11,000 to prevent the RPM
limiter from interfering with the tachometer’s other functions.
DO NOT USE solid core (copper core; stainless steel core) spark plug wire with
any electronic ignition system or accessory. Solid core spark plug wire is a
source of ignition noise, which can cause false triggering and premature ignition
or accessory failure.
MOUNTING PROCEDURE
Step 1
Disconnect the battery (–) cable to cut power to the system.
Step 2
Select a convenient location to mount the HYFIRE^® VIIS Ignition System. Keep
the unit away from hot engine components or extreme heat such as the exhaust
system and manifolds. Keep the unit away from moving devices, such as fans,
belts and linkages. The location must be dry. Moisture will damage components
inside the unit.
Step 3
Mounting to a flat surface with shock mounts
• Hold the unit in its mounting position and center punch the mounting pattern on
the mounting surface for drilling mounting holes. Drill mounting holes using a 9/
32" drill bit.
• Install the shock mounts into the bottom plate of the unit. Hold the unit in position
where it will be mounted.
• From the backside of the mounting surface, insert the washers and the 1/4-20
nylock nuts onto the shock mount studs. Tighten each nut until snug.
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