Since I'm still waiting for some parts for the fuel system swap I decided to start replacing the ignition. I will mount a trigger wheel on the crancshaft pulley which will be used to trigger both the fuel-injectors and the ignition. Hopefully I will get my adapter for the trigger wheel soon so that I can start mounting it on the car.
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| Trigger wheel and VR sensor on pulley |
The Megasquirt ECU will controll the ignition by using 3 "coil driver transistors" wich fire 2 spark-plugs at time (Wasted Spark) via a 6 Coil Pack. The "coil driver transistors" are mounted at the Relay Board's aluminium chassi and the the signals are taken from the circut board.
The Coil Pack costs about 450kr (75$) and the transistors about 50kr (8.5$) each. The Coil Pack can probably be found much cheaper at nearest junkyard...
Very simple function, the coil has a permanent 12+ connected to one side and the other side of the coil are grounded via the "coil driver transistor" when it's time to fire.This will replace the distributor, old transistorized ignition box and coil.
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| 3 coil driver transistors connected to the Coil Pack |
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| Inside the Coil Pack |
This is the ignition table I will start with and then calibrate it while driving...
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| Load (intake vacuum and/or opened throttle) and RPM |
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