Pro Mag 12 Magneto MSD8139

Chevy Tall Block, Adjustable slip collar, Bronze Gear

MSD8139

D8139

Accurate and maintenance-free magnetic pickup replaces points. Powerful rare earth magnets never require charging. Special power circuit requires no batteries. Only requires 200 - 250 rpm to start the engine. Fully locked-out timing with options to incorporate a crank trigger system. Rynite injection moulded cap and locking rotor. With 12 amps of primary current and powerful sparks that last for up to 26° of crankshaft rotation, the Pro Mag 12 is more than capable of lighting your race fuel completely for total combustion and the most power. Of course, all this spark energy is useless without accurate ignition timing. To make sure the Pro Mag fire reaches the spark plugs at the exact moment, our engineers did away with mechanical points in favour of our race proven magnetic pickup to trigger the Pro Mag. This pickup is much more accurate than points and ment or replacement. A precision manufactured reluctor attached to the Mag shaft is responsible for triggering the mag pickup at the precise moment. This trigger signal goes into the Electronic Points Box (PN MSD8106 sold separately) that also houses the coil and rev limiting functions of the Mag. Here the generator's spark energy is controlled through unique electrical circuits and delivered to the epoxy filled coil where the voltage is stepped up through specially designed windings. Specifications Primary Current: 12 Amps Spark Energy: 300 millijoules (at the gap) Secondary Voltage: 40,000 Volts Secondary Current: 200 Milliamp Spark Series Duration: 26° Crankshaft Rotation RPM Rating: through 14,000 RPM