1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 IGNITION SYSTEM

Part Number: 53-327

IGNITION SYSTEM - Part Number 53-327
Dual coil. Converts from point-triggered to electronic ignition. May be used with dual plug heads. Electric tach applications require the use of tach adapter. The HI-1 dual fire inductive ignition system is a single module, single coil dual fire system. The HI-2 single fire inductive ignition system is a dual module, dual coil single fire system. Both of these systems can be used with any high quality coil with 2-3 ohms primary resistance. Crane's testing has found that Accel's Super Coil (our part No. 53-314) works best for all dual tower applications. The HI-1 and HI-2 are high energy inductive storage systems that replace factory ignition systems. They can be used to convert the points-triggered ignitions to electronic or replace factory electronic ignitions with a more powerful system that eliminates the factory external module & RPM limiter. Installation is very simple, on points-triggered ignitions you remove your stock point plate and replace it with Crane's plate and rotor. On electronic ignition models, you remove your factory ignition system, install a mechanical spark advance mechanism (not included) and install the plate and rotor assembly. The HI system is a Hall cell triggered system. This system is not affected by dust, dirt, oil, gasoline, water or any other foreign materials that might get into the ignition housing. It will operate from -40 degrees to +300 degrees farenheit. It has a number of significant advantages over the Dyna system which is also a Hall cell triggered system: -The HI system uses separate magnets to turn the coil on and off, whereas the Dyna system uses a magnet only to turn the coil off. The result is that the HI system produces the correct dwell time of 130 degrees (camshaft) for either the single or dual coil versions. The Dyna system produces about 160 degrees dwell for the single coil version and 330 degrees dwell for the dual coil version! These long dwell times, especially for the dual coil version, result in excessive coil heating which increases their primary resistance, which in turn reduces the primary current and hence the energy output. - The Dyna system uses round magnets mounted in a radial configuration at a radius of about 1/2". The HI system uses square magnets, more than twiice as strong as those in the Dyna system, that are mounted in a planar configuration relative to the Hall cell at a radius of just under 1". The result of this is timing accuracy, over time and temperature, 4 to 5 times that of the Dyna system. This is evidenced in the fact that in dual module systems each module must be timed individually in the Dyna system, while in the Hi system only a single module has to be timed. The module-to-module timing accuracy is inherent in the design. - The HI system can switch primary coil currents the square of the primary coil current, this means that, with the proper coil, the ignition energy could be increased about four times over stock.
Crane Cams Hi 2 Single Fire Dual Module 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974

Purchase