DELCO-REMY MISAR Ignition: Description

The Delco-Remy Misar ignition system uses a standard High Energy Ignition (HEI) distributor. The distributor, however, DOES NOT have a vacuum/mechanical advance mechanism, a pick-up coil, or pole piece. The distributor cap, coil and module are the same as the standard HEI distributor, but the rotor is different.

The Misar ignition system has a controller assembly mounted behind glove box in passenger compartment. See Figure. The controller assembly receives signals from a crankshaft position sensor and a coolant temperature sensor. The crankshaft position sensor is located at front of engine. The coolant temperature sensor is located near upper radiator hose outlet. The coolant temperature sensor is part of the ignition system and operates as a variable resistor (its resistance drops as coolant temperature rises).

The controller assembly also receives an intake manifold vacuum signal and an atmospheric pressure signal. The White manifold vacuum hose is connected to carburetor and the Black atmospheric pressure hose is open to the atmosphere in the engine compartment. The system includes a "CHECK IGNITION" indicator light on instrument panel.