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| = Bosch = | = Bosch = | ||
| - | <blockquote><hr>NOTE: Bosch GT40R or GT40RT can be used as a direct replacement for the stock 1200 coil, but is less powerful than the stocker 1.3 ohm points coil.<hr></blockquote> | + | <blockquote><hr>NOTE: Bosch GT40R or GT40RT can be used as a direct replacement for the stock 1200 coil, but is less powerful than the stocker 1.3 ohm points coil. Ditto for the GT40/GT40T, it's not a high-energy coil even though it does not use a Ballast Resistor (it has a resistor built-in).<hr></blockquote> |
| Bosch HEC715 (made in China) is the aftermarket coil for EI systems, and draws more current (0.41 ohms). Consider using an ignition relay as this will draw a peak 29 amps (I=V/R) if you connected it to a points system -- although considerably less in usage with EI as the electronic controller will never stay in the closed circuit for very long like points can do if the engine stops with the points in closed position. | Bosch HEC715 (made in China) is the aftermarket coil for EI systems, and draws more current (0.41 ohms). Consider using an ignition relay as this will draw a peak 29 amps (I=V/R) if you connected it to a points system -- although considerably less in usage with EI as the electronic controller will never stay in the closed circuit for very long like points can do if the engine stops with the points in closed position. | ||
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| = MSD Blaster = | = MSD Blaster = | ||
Revision as of 09:42, 12 December 2011
When using a Datsun Electronic Ignition distributor, you can use the stock 1200 coil as long as you leave the ballast resistor in place. But a high-energy Datsun coil has vastly better performance.
Also see: EI Wiring
Contents |
Overview
For best performance, use a Pulsar N12 coil or other Datsun-Nissan coil from a high energy system. Or a compatible aftermarket coil. It draws 12.9 amps @ 0.93 ohms. Any 1980s era Datsun-Nissan EI coil should work just fine. With this type of coil, bypass the stock resistor. Remove it or simply jump a wire (short) across both terminals. See EI Wiring for details.
The coil from a Series 2 Bluebird (Datsun 910) or R31 Pintara with electronic dizzy may be used with Datsun/Nissan electronic ignition.
Pulsar Coil aftermarket Standard Motor Products UC12 Primary 200 Scale .7 - 1.4 Secondary 200 Scale 9.0k - 15.5k N12 part number 22433-11M00 assembly 22462-11M00 Hitachi coil 22462-N7811 Hanshin coil
Current Draw
Stock points coil is 1.3 ohms + 1.5 ohm resistor = 3.2 ohm, so it will draw 3.75 amps at 12 volts (I=V/R). This low amperage is to prevent the contact points from burning out. Except when starting, it sees a lower voltage because of the Ballast Resistor.
Points coil: 3.75 amps Nissan IE coil: up to 12 amps (e.g. N12 Pulsar)
The higher current draw allow a fatter spark, even at higher voltages. Exactly what the engine wants.
Bosch
NOTE: Bosch GT40R or GT40RT can be used as a direct replacement for the stock 1200 coil, but is less powerful than the stocker 1.3 ohm points coil. Ditto for the GT40/GT40T, it's not a high-energy coil even though it does not use a Ballast Resistor (it has a resistor built-in).
Bosch HEC715 (made in China) is the aftermarket coil for EI systems, and draws more current (0.41 ohms). Consider using an ignition relay as this will draw a peak 29 amps (I=V/R) if you connected it to a points system -- although considerably less in usage with EI as the electronic controller will never stay in the closed circuit for very long like points can do if the engine stops with the points in closed position.
MSD Blaster
MSD Blaster
For multi-channel coil drivers (not stock EI) Low resistance, quick rise time for high-revving systems Maximum Output: 43,000 volts 85:1 windings
MSD Blaster 2/MSD Blaster 3
Primary Resistance: 0.7 ohms Secondary Resistance: 4.70K ohms 100:1 windings Maximum Output: 45,000 volts