Subject: Ford Module
From: Rotary Engine
Date: 1/5/2010, 10:53 AM
To: AAA Put this in the To box




Are there any newer Ford EDIS modules that can be used and do I need any of
the other parts of the ignition system ?
The biggest junk yard here doesn't have any cars later than 1996.
--
Karibian


Karibian, 1995 is the last year for the stand alone EDIS system which
started in 1988 as the replacement for the DIS system. In 1996 the EEC-Iv
engine computer (60 pin connector) was relaced by the EEC V  (104 pin
connector) which had the edis function added to the engine computer. For a
rotary you need a 36 tooth reluctor wheel, two VR (variable reluctance)
pickups and two EDIS-4 ignition controllers a 4 coil pack (Ford or Accel),
and the plug wires. mount the VR sensors 7 degrees apart so that one EDIS
fires 20 degrees BTDC and the other set fires at 27 degrees BTDC, Have a
slotted hole mounting plate for the VR sensors for +/- 4 degrees on the
fixed timing. Feed the two EDIS modules on separate breakers for a
completely redundant ignition. Power will be down some on a single ignition.
          The application of these parts is well documented all over the
internet, you should research this yourself for a better understanding of
how many teeth before TDC the missing tooth of the 36 tooth sprocket is
mounted, clearance of the VR sensor, 8000 RPM limit of operation. This is a
very simple reliable system with only a few wires to sort. Thed EDIS 4
module is available new from autoparts stores for about $37, Accel coils
packs are about $69 and the VR sensor is about $18 Everything new for a
redundant 2 rotor  with plug wires is about $240.
      I plan on using a Ford EEC IV system on the four rotor and am using
the EDIS 8 to get enough trigger signals to match the 80MM MAF sensor and
eight 19 pound injectors and two EDIS 4 modules to run the ignition
separately so that the EEC IV computer max RPM function won't reduce the
ignition timing. Except for an inline potentiometer on the MAF 4.7 volt
maximum input to allow lean cruise mixture the EEC IV will be all stock
programming.


george grimes

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