Olds HEI with the reluctor wheel, rotor mount and reluctor coil mount removed. The Bosch shutter is in the lower corner.
Turning the shaft end to accept the bosch shutter
Boring the shutter to fit on the shaft. It was held on before with a fairly loose press fit and a pin.
Shutter wheel with all the shutters ground off except one. It is a press fit on the Olds shaft.
Hall effect sensor mounted. Used aluminium rivets to hold it as they are non magnetic.
Shutter clears the bottom of the sensor by .020. This is lower than the operating position as the gear runs against the block at the bottom of the distributor cavity when it is in the engine.