Crank Triggers

Race car drivers have long known that a key for improving engine performance is stabilizing the ignition timing. MSD Flying Magnet Crank Trigger systems do just that, by employing four magnets housed in an aluminum wheel. Although these do not differ greatly in appearance from other crank triggers, MSD Flying Magnet triggers operate on a different principle. The majority of crank triggers are designed with a wheel that has steel studs protruding from it and that is attached to the harmonic balancer. When the crankshaft turns, the steel studs move past a fixed magnetic pickup, and this triggers the ignition. The fixed pickup can also, unfortunately, be triggered by metal other than the studs, including bolts and debris, and even by vibration; this leads to a reduction in power or even damage to the engine. The MSD Flying Magnet Crank Trigger utilizes four magnets that are secured inside the aluminum trigger wheel; the magnets go past a fixed non-magnetic pickup, and this triggers the ignition. This “flying magnet” design ensures accurate trigger signals, and since the pickup is non-magnetic, it cannot be falsely triggered by random bits of moving metal. Each Flying Magnet Crank Trigger is designed with a two-piece mounting bracket that holds the non-magnetic pickup; this will usually work on either the passenger’s side or on the driver’s side of the engine (although SB Chrysler and SB Ford brackets mount on one side only). The CNC-machined aluminum bracket holds the pickup firmly in place and is designed with slots, giving you a wide range of timing adjustments. These triggers come with spacers so that you can install the bracket on engines with standard motor mounts or on engines with a .25” motor plate. These triggers will work with MSD 6, 7 and 8-Series Ignitions as well as all MSD Timing Accessories.

Read more