Ford EDIS Megasquirt Conversion 289 302 351

On March 23, 2011, in Misc, by admin

When I’m not troubleshooting IT stuff I like to work on Engines. A computer that runs your engine. I can hookup my laptop and program my engine now, Cool.

Ford EDIS Megasquirt Conversion 289 302 351

Finished

Why Do this Conversion

Bigger spark (no spark lost from the rotor to cap)
Precise timing (timing chain slack and distributor gear wear can throw off timing)
Control timing curves from your computer
Larger spark plug gap
Proven Technology (used on ford cars and truck for the last 15 years)

Parts List

I started considering this conversion when I switched my 1966 Bronco to Megasquirt. Having full injection when off roading is a must. With fuel injection you do not need to change jets or metering rods at high altitude. Now I have immediate throttle response and can stomp at any angle. I used a Holley-projection 700CFM throttle body.

Engine Specs

289 Cubic Inch engine
Edelbrock Performer RPM Air-Gap Manifold
Holley Pro-jection 700 CFM throttle Body
Megasquirt II with 3.57 Board
Heavily ported heads, hardened seats, Enlarge valves, Comp Cams triple springs
Comp Cams Roller Rockers
Comp Cams retro fit roller cam conversion XR282RF-HR10
Headman Headers
Victor Series Water Pump
Billet Pulleys

Building The Trigger Wheel and VR Mount

I used my drill press to drill the 4 evenly spaced holes in the trigger wheel. I lucked out because I basically eyeballed it.

Parts Trigger Wheel VR Mount

Building the Crank trigger wheel and VR Mount.

EDIS-8: missing tooth is exactly five teeth (50°) ahead of the VR sensor.

VR Mount

Having an extra timing chain cover made building the VR sensor mount allot easier. Most off this was just eyeballing. No formulas or calculations.

VR Mount

Parts Preparation

Sand Blast Cabinet

Bead Blast

Harbor Freight Powder coating machine

Powder Coat

Powder Coated and ready for Oven

Powder Coat

Put in Oven

325 degrees for 15 Minutes. Beware! This is sure to activate angry wife syndrome.

oven oven

Finished Wheel and Mount

Finished

First Mounting

Test test

Testing VR Mount

Mounting VR VR Mounting

Cam Position Sensor off an Explorer 5.0. The only point of this part is to drive the oil pump and cover the hole left by the distributor.

cam sensor

Mounting Coil Packs and building wires. I used the coil pack mount off a 5.0 Explorer.

5.0 V8
cylinder locations
4//////////////8
3//////////////7
2//////////////6
1//////////////5
coil idetification
4 7 ///////////////3 5
8 2 ///////////////6 1

Coil Packs Coild Packs

wiring diagram

Mounting the EDIS Module and Megasquirt. This is Mounted under dash. Megasquirt is awesome.

EDIS

Finished Product

Finished

I was using an MSD mechanical advance distributor and 6AL before the upgrade. Now I can control timing curves through Megasquirt. I can also run much bigger spark plug gaps. The system is way more precise then running a distributor. I will be adding an MSD DIS-4 Soon.