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Magneto Timing Mechanism


Magneto Timing Mechanism


Finally, a mechanism to advance/retard magneto timing that will mount on any lower drive, offset drive, front mount, etc. This is the ticket for point-style magnetos or even electronic mags. This CO2 powered mechanism mounts between a band clamp-style magneto and lower drive. The mag glides on bearings to a preset amount at a pre-determined time and rate. The mechanism can advance or retard ignition timing up to a maximum of 44 crankshaft degrees between stops. We think that oughta be enough for anybody.

For folks using the MSD mags, this entire setup is considerably less expensive than even the most basic “6-shooter” (8158) and timing retard (8168) setup. And it’s a reliable manual method, not electronic. What you see is what you get! Unlike the electronic method, the rotor phasing will remain optimal at all times. Plus, you aren’t limited to only 15 degrees of timing change with our mechanism.

Mounting: Band clamp style MSD or Mallory magnetos. Adapters for Vertex mags available.
Activation: Electric over air (12VDC) or Pneumatic (air over air).
Actuation: Pneumatic (CO2)
CO2 pressure: 85 PSI minimum recommended
Travel: Up to 44 crankshaft degrees
Rate: Separate forward and reverse rate adjustment
Port sizes: All solenoid valve and cylinder ports are 1/8”NPT female.
Height: The magneto mounts 1.40” higher than the stock location.
Driver: (A) Standard Cross, (B) RCD Rotex (4 prong) and (C) RCD Lovejoy (3 prong) drive couplers available. Cross adapters for the Mallory lower drive are available (pictured below right).

Also included: quick-release stainless steel band clamp, solenoid control valve and harness, rate control valves, pneumatic cylinder, attachments for one support brace (there are provisions for two on the mech), an extended mag driver of your choice and attaching hardware.

NEW Activation option:
Some organizations (ex. IHRA Funny Car) prohibit activation by electric means. We've added a pneumatic activation option that can be selected below. An air button (not included) can be used to activate the unit in situations where electric is illegal or no 12VDC source exists on the vehicle. The price is the same.


PDF Download: Instructions and Example Schematic

YouTube Video of the FIE Mag mech in action

Application Ideas
  1. Traction control off the starting line (see included schematic) by starting out retarded and add timing after the first 1-2 seconds using a throttle pedal switch. Variation: Use a steering wheel push button to remove the added timing at the top end.
  2. A top end timing retard activated by a high gear shift switch, RPM activated switch, timer or controller.
  3. Subtract timing as boost increases using a pressure switch to set a threshold for activation.
  4. Use as a “start retard” for easier starting when extreme amounts of timing are used. Timing is added once motor is started.

Select the required style of magneto driver below and add a Mallory drive adapter if required.

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