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[Datsun 1200 encyclopedia]

EDIS

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Categories: Engine Modifications | Engine Electrical System

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-The Ford EDIS (Electronic Distributorless Ignition System) is a computer-controlled ignition system ''that can operate independent of an ECU''. This makes it a great low cost system for swaps. The parts are unbundant in American wrecking yards, or are available from [http://www.BoostEngineering.net/?Click=201 Boost Engineering] . The 4-cylinder version of EDIS is used on with 1.9 liter CVH engine in the 1990-1993 [[wikipedia:Ford Escort|Ford Escort]] and Mercury Tracer, US models. You can make your own crankshaft wheel, or adapt one from the Escort, Mustang, Taurus or other Ford models. Unlike other similar system that require a Camshaft Phase Sensor, this uses a simple crankshaft toothed wheel. It is a wasted spark system. This system has been succesfully used on vintage Beetles, recent BMWs, Datsun Roadsters and just about everything else. Total cost is about $120 - $200 depending.+The Ford EDIS (Electronic Distributorless Ignition System) is a computer-controlled ignition system ''that can operate independent of an ECU''. This makes it a great low cost system for swaps. The parts are unbundant in American wrecking yards, or are available from [http://www.BoostEngineering.net/?Click=201 Boost Engineering] . The 4-cylinder version of EDIS is used on many Ford models worldwide. You can make your own crankshaft wheel, or adapt one a Ford wheel. Unlike other similar system that require a Camshaft Phase Sensor, this uses a simple crankshaft toothed wheel. It is a wasted spark system. This system has been succesfully used on vintage Beetles, recent BMWs, Datsun Roadsters and just about everything else. Total cost is about $120 - $200 depending.
[http://datsun1200.com/modules/myalbum/photo.php?lid=16008 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/modules/myalbum/photos/16008.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=16008 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/modules/myalbum/photos/16008.jpg]

Revision as of 08:04, 29 June 2011

The Ford EDIS (Electronic Distributorless Ignition System) is a computer-controlled ignition system that can operate independent of an ECU. This makes it a great low cost system for swaps. The parts are unbundant in American wrecking yards, or are available from Boost Engineering . The 4-cylinder version of EDIS is used on many Ford models worldwide. You can make your own crankshaft wheel, or adapt one a Ford wheel. Unlike other similar system that require a Camshaft Phase Sensor, this uses a simple crankshaft toothed wheel. It is a wasted spark system. This system has been succesfully used on vintage Beetles, recent BMWs, Datsun Roadsters and just about everything else. Total cost is about $120 - $200 depending.

16008.jpg

Contents

Parts Needed

The parts from the wreckers needed are about $25-$100:

  • Crank wheel trigger
  • Crank sensor
  • EDIS module with a bit of the wiring
  • 4-tower coil pack
  • Spark plug wires
  1. About $70 on Ebay for all the above
  2. A brand new EDIS module with wiring connector is about $200.
  3. Quality Refurbished EDIS kits and more available from Boost Engineering

EDIS.jpg


Using EDIS alone, it outputs a fixed spark timing of 10 degrees BTDC. You can drive the car like this! But it won't be very fuel efficient or particularly powerful. Using a relatively simple timing controller ($89 kit) completes the picture. Optionally you can program an entire spark curve map using a standard PC.


For detailed technical information, see Ford EDIS technical information

Discussions

Our own club member sundat1200 has used EDIS on a 1975 VW Rabbit and a 2002 BMW with "great success"


Crank Trigger Wheel

The trigger wheel on the crankshaft has 36 teeth, with one missing -- the 36-1 style. Any wheel of this style can be used.

  • You can make your own crankshaft wheel out of sheet metal
  • or adapt one from the Escort, Mustang, Taurus or other Ford models
  • Ford UK trigger wheel Part No 1078767 is only 13 UK Pounds, and can be glued or bolted to most crank pulleys


For many details, see KEW Engineering

Bolt-on Method

16001.jpg
See detail below

Machined Method

17381.jpg 17382.jpg 17383.jpg

Dimensions

As the Datsun A-series crank pulley is 5.5 inches (139 mm) outside diameter, you need a trigger wheel at least this large.

USA Escort/Tracer wheel (as shown in photo above)

  • 144.30 mm OD
  • 102.80 mm ID
  • 9 mm thick at teeth, 7mm thick where it meets the flange
  • Cast iron hub: ~28mm crankshaft diameter

UK Ford: 1078767. Ford Germany: 98XM 6K339 AA

  • 160mm OD
  • tw_ford_pressedtriggerwheels.jpg


Other Ford parts are too small for the A-series I think.

UK Ford

  • 120mm OD

Early Mustang pressed steel

  • pre-2000 XW1Z-12A227-AC (slightly less than 5 inches in diameter)

Late Mustang wheels are one piece with the crank hub.

  • cast wheel PN F2LZ-12A227-BB

Taurus 3.8 Turbo wheels are smaller diameter than the A-series pully:

  • 120.65 mm (4.75 in) OD
  • 70.36 mm (2.77 in) ID

Ford Modular V8 4.6/5.4 - PN F2LE-12A227-BC

  • 126mm OD
  • 32mm ID

A-series Kit

With the standard Escort pulley, use hacksaw to separate the grooved-belt section from the toothed section. You will end up with a steel hub with toothed aluminum wheel.

16001.jpg

  • Use a bushing like this, a machine one from solid aluminum. This bushing is a standard 5/8 inch type. Pound the flange a bit to enlarge it. A longer crank bolt fits.


To fit this wheel:

  1. Using a hacksaw, cut the trigger wheel from the pulley hub. I think it is cast iron. This leaves the wheel on a flat part of the hub. If the cut is not straight, grind/file it flat so that it is correctly balanced.
    21530.jpg
  2. With the 139mm A-series pulley, just take two extra pulley bolt washers to space the wheel in front of the pulley. There is no room to mount it behind the pulley.
    21531.jpg
    • Stock A-series pulley bolt washer is 34.5mm OD, 0.64 in (16.2mm) ID, 8mm thick.
      • Part Number: 12308-H1000 ($1.25)
    • They can be bigger on Outside Diameter if needed.
  3. Fit a spacer inside the Escort pully hole:
    • ID: 0.61 in (15.5mm)
    • OD: 1.07 in - 1.09 in (27.1 - 27.6 mm).
      You may need to drill/file the hole out a touch to fit over the bolt
    • no more than 0.37 in. (9.3 mm) thick.
    • Drill the ID (0.54 in) out using a 19/32 in drill bit to fit tightly over the bolt. Some filing with a round file will be needed. This is just to fit the pulley laterally. The Bolt will fasten it tight. Better yet, have a machinest make a tidy aluminum spacer.
  4. Fit the longer pulley bolt and the last washer.
  5. Torque: 15-16 kg/m (108-116 ft. lb.)


The stock A-series crankshaft pulley bolt is:

  • Stock Part Number: 12309-78200 ($4.58)
    M16 x 1.50 (fine) pitch
  • 15mm diameter
  • 27mm long
  • The head is 27mm hex and about 15 mm thick.
  • Torque: 15-16 kg/m (108-116 ft. lb.)


The new pulley bolt needs to be 55 mm long.

  • M16 x 1.50 x 55 mm. ($3.15)

Will Grade 8.8 be OK? Or does it require Grade 10.8?

  • Torque: 15-16 kg/m (108-116 ft. lb.)


Fitting the Trigger Wheel

  1. Fit the trigger wheel on the crank pulley
  2. Make the sensor bracket. The more rigid, the better
  3. Turn the engine to TDC on #1.
  4. Mark the tooth that is 6 teeth anti-clockwise from the "missing" tooth.
  5. Center the marked tooth over the sensor.
  6. Bolt the crankshaft pulley bolt tight (108-116 lb. ft. torque)

15999.jpg 21532.jpg

  • make a plate to bolt the sensor to the front of the engine. Sensor-to-tooth clearance is 0.040 inch or less.
  • This sensor is from a Ford Aerostar van


Audio of first run (timing retarded, but very strong and smooth spark): FLV flash video (202k)


15998.jpg 16000.jpg 16477.jpg

Coil Pack Mounting

You can mount the coil pack on the core support next to the radiator:
21527.jpg


For late 1200 utes, with the battery in front, the stock coil location works well:
21528.jpg

But not so well for an early 1200:
21529.jpg


Distributor Plug the Hole

Washer using standard O-ring:
16478.jpg

Aluminum plug:
19530.jpg

Aluminum Plug:
16197.jpg 16198.jpg 16199.jpg

Controller

You can use MegaSquirt along with EFI, or just run "spark-only" software on the MegaSquirt just to control EDIS. Cost: $187 USD kit, about double what MegaJolt Lite Jr. costs. If you are going to run aftermaket EFI, MegaSquirt is is the way to go. Otherwise, use MegaJolt Lite Jr.


MegaSquirt 1 v3

Megasquirt works with EDIS system.

MegaJolt Lite Jr.

MegaJolt Lite Jr. can be purchased from several vendors in USA and UK, including AutoSport Labs. The complete kit is $89 USD complete with MAP sensor. It has everything needed except the EDIS parts themselves, and external wiring.

16106.jpg


The kit is fairly simple and might take about 1 hour to complete, if you are good at this sort of thing. It took me three hours to solder up, but then again I haven't soldered up a kit since 1982. After I was done, it worked with no problems.


Get the MAP sensor version. It is better. However, if you have a lumpy idle from big cams or big carbs, then you won't have a good vacuum signal. In that case, use the TPS version (which requires a carb throttle sensor).

After completing the kit, wire it into the car and drive off.


Wiring

MegaJolt Lite Jr. requires mounting in the passenger compartment. That's OK since that's where you can easily use a laptop should you wish to tune it live.


For wiring instructions and pictures for the EDIS modules -- which should apply to both MegaJolt Lite Jr. and MegaSquirt controllers -- see EDIS And Coil Pack Installation


Four wires:

  1. Ground (earth) 16 gauge
  2. IGN (hot) 18 gauge
  3. PIP rpm sensor (double-wire shielded cable)
  4. SAW feedback wire (double-wire shielded cable)

EDIS_wiring.jpg


For power and ground, I used some wiring cut from an old car.

The MJLJ control wires requires Shielded Twisted Pair (STP) wire. I used an ancient electric guitar cable with small wires (22 gauge, I think). It seems to work OK, although the VR sensor itself uses 18 gauge wires.

I used 10 ft of sensor wiring, so that I can move the sensor from one side of the dash to the other, and to route it along the edge of the engine compartment. Four feet would be the minimum needed.


4-Cylinder EDIS module pinout

Signal EDIS Module Terminal
PIP (EDIS output signal) 1
IDM (diagnostic signal to ECU) 2
SAW (ECU spark control signal) 3
IGN GND (signal return) 4
VRS - (crank sensor negative) 5
VRS +(crank sensor positive) 6
VRS shield (crank sensor shield) 7
VPWR (ignition switched 12 volts) 8
PWR GND 9
COIL 1 (coil drive) 10
CTO (clean tach out) 11
COIL 2 (coil drive) 12


Optional: MegaJolt Lite Jr. has extra outputs:

  • Tachometer
  • Four outputs designed to drive LED lights, such as a shift light. You can also use them to drive a beeper, or other things.

PC Interface

You don't need a computer or laptop to test or tune MegaJolt Lite Jr. However you can test it on your desk using a serial cable:

Mjlj_main_screen_connected.png

I downloaded the "Naturally Aspirated" map to it (it comes with a dual-purpose NA/boosted map), then bolted it in the car and it worked right off the bat.

Apparently you can tune it while the engine is running, but there is no need to do so.

Again, no laptop is needed. MJLJ comes with a built in map suitable for "all" engines (including Natually Aspirated, Turbo and Supercharged).


Parts

Spark Plugs

The spark plugs in the EDIS4 cars use a 0.054 inch gap.


Gap 1.0-1.1 mm (0.039-0.043 in) for Datsun A-series Engine

  • Same as 1979-1982 Datsun B310 USA models
  • NGK BPR5ES-11(7634) standard type
  • NGK BPR5EIX-11(2115) Iridium IX
  • NGK BPR5EGP(7802) G-Power (platinum)
  • NGK BPR5EY-11(6937) V-Power (grooved electrode)
  • Champion 322 (RN11YC4, standard)
  • Champion 3322 (platinum)
  • Champion 7332 (RN10PYP4, double platinum)
  • Champion 9804 (iridium, with platinum tipped V-Trimmed Ground Electrode)
  • ACDelco R43XLS (standard)
  • ACDelco 41802/41-802 (Professional Platinum dual platinum)
  • Bosch 7907 (WR8DCX Super Plus)
  • Bosch 4219 (platinum)
  • Bosch 4019 (WR8DPX Platinum Plus)
  • Nissan 22401-27T65(PGR5A-11)
  • Nissan 22401-N8715(BP5ES-11)
  • Can re-gap to 1.3 mm (0.054 in)


Gap 1.2mm (0.050 inch), can be gapped to 1.3 (0.054)

  • Autolite 64 copper
  • Autolite XP64 (Iridium, with platinum ground electrode)
  • Autolite APP64 (Double Platinum, including platinum bottom on the ground electrode, 100K mile plug)
    • "preferred technology for DIS engines"
  • Autolite AP64 (Platinum)


Gap 1.2-1.3 mm (0.054 in) for Datsun A-series Engine

  • Nissan 22401-HC000 (BPR5ES-13) [original fitment: non-USA, non-A-series]
  • NGK BPR5ES-13(3154)
  • Denso W16EXR-U13 (standard)
  • Denso IW16 (5305, Iridium Power) 30K mile plugs, non-iridium U-groove ground electrode
  • Denso VW16 (Iridium Tough) 120K mile plugs, platinum button ground electrode
  • Mazda FEDK-18-110
    • Mazda 323 with
      • 1985-1986 B3 EGI engine 1.3L 1324cc L4 FI
      • 1987 E5 EGI engine
  • If you can find them (Japan, Europe sales)

Coil Pack

  • FORD EDIS-4 from 1990 Escort/Tracer 1.9L. Part Number: F1CZ-12K072-A
  • new Accel 4-Tower coil pack $56.95 at Summit Racing]
    acc-140018_w_m.jpg
  • Most European and USA Fords from circa 1990 up use 36-1 crank trigger wheels and EDIS-type coil packs. You can also buy them aftermarket.
  • Most '90s Fords use a compatible crank sensor (VR sensor)


The "standalone" EDIS module is limited to a few models, most other Fords have the EEC engine module control both the EFI and spark. In other words, they all use EDIS.

VR Sensor

  • PC19 straight type, 1991-1996 Escort/Tracer with 1.9 engine 163979940.jpg
  • PC27 (F0CZ 6B288A) down style
  • PC51 (1F2Z-6C315AA) straight Windstar, F150, Freestar, Explore V6 4.3/V8
  • PC74 (1F1Z-6C315DB) straight Ranger/Taurus/Mazda/Windstar V6 3.0


Connectors

S-744 edis module pigtail S-755 coil pigtail S-812 crank and cam sensor pigtail S-674 tps pigtail

TH169 throttle position sensor

LX239 EDIS-4 module

FD-487 coil pack


Australia

MegaJolt Lite Jr. are available mail order, so they are very easy to get. You can also buy a completed unit. Self-solder kits are no longer available.

These coil packs work with EDIS controller:

  • Any Ford 36-1 trigger wheel and VR sensor, e.g. Falcon
  • 1997 V8-fitted LTD with EDIS
  • Zetec engine VR sensor (which is aimed at the flywheel instead of the crank pulley)

These reportedly with with an EDIS controller. Any coil pack without internal drivers:

  • Toyota
  • Mitsubishi
  • GM DIS coil pack (typical Holden 2-spark coils, a la GM 3800)
  • Chrysler coil pack
  • Bosch coil pack

Measure the resistance and check to make sure it compatible.

The EDIS coil pack is negative switched, with the center wire being a common 12V. It is a three wire coil. When using GM DIS 2-wire coils, tie the 12V lines together.

GM 3800 coil packs 1986-2009
coil_packs_closeup_resize_100.jpg

23349.jpg