Would the conversion of our engine to a D.I.S. require a distributor plug or other fabrication? What I'm trying to figure out is if anything will be damged by the removal of the distributor and simply putting a plug in its place. I've seen this done for VW's but I just don't know about slants.

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The old white brick

All you should need is something to cover/plug up the hole.........

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Tell us a little more about the kind of system you are considering using.
Sam

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Thanks Ed, that's what I was hoping for. As for which system, I was strongly considering Ford's EDIS to handle the ignition.

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The old white brick

what will you use for a trigger?

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69 valiant

EDIS will require a 36-1 trigger on the crank pulley and a VR sensor. I'm planning to do this eventually and have gathered the EDIS module and an Interpid coil pack already. Just need to get the trigger wheel.

I don't see any problem with plugging the distributor hole. The distributor gear on a slant only drives the distributor.

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

You can buy the ford trigger wheel new from napa. Easier then fussing with a puller at a junkyard. Think the ones I bought were less then $15.

Are you going to use MS or some other computer to drive the ford module?

I plan on eventually using MS to control Fuel and spark, I'll start with spark while i get the fuel side sorted, plumbed, etc...

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The old white brick

What does the acronym EDIS stand for? Can you point us towards a web site or diagragm of how it works? How would you retrofit it to your slant? How many coils does it have? Is it a coil pack set up? I must say that most of the newer ignition systems are really unkown to me. I understand the old points and coil, the electronic ignition of Mopar style, and the Hall effect ignition, but all of these have a distributor that routes the spark to the proper plug through a rotating rotor and with a distributor cap. Can anyone enlighten me/us here. I am sure I am not the only one left in the dark.
Sam

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Actually you'll probably get more info from google on this subject than from me. EDIS stands for Electronic Distributorless Ignition System. Found this. Hope that helps. It uses a coil pack and it triggered by a 36-1 wheel placed on the damper/crank pully, which triggers a VR sensor. You do need a computer to control it, like megasquirt, or you'll just get a 10 deg advance signal, which is the unit's Limp Home mode. to retrofit the slant, you'd need a coil pack, wires, an EDIS module, a spark management system to do your timing curve, and the related wiring harnesses. It lets you chuck the distributor, which is one less part that I know I can break.

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The old white brick

As technical as your going to get...

http://www.bgsoflex.com/mjl/mjl_edis_summary.html

Howto for mating with MS - http://megasquirt.sourceforge.net/extra ... dware.html

the distributor gear on the cam also drives the oil pump, right? why did you choose the ford system? i had considered building a DIS using MSD parts. i was going have the flywheel indexed to the crank and have three magnets installed. i figure a hole could be made on the right side of the engine back there where a pick up could be mounted. i have been told that the further out the magnets can be placed the more accurate the timing can be. thoughts?

zedpapa

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1970 dodge dart w/225 /6 bored .040" over, holley 390cfm w/vac. sec., compcams 252s, clifford shorty headers w/2.5" exhaust w/flowmaster, f-body 11" front discs, aluminum A-833OD, 8 1/4 w/3.21 SG
soon to have 5 gears!!!

I don't know truthfully, that's what the original intent of this thread was, but I seem to have been idealogically hijacked by a technical question. I chose the Ford system, becuase of price and availability, and available informational resources for set up. Truthfully, I know next to nothing about a flying magnet setup like you're considering. But yes, having a greater rotational distance between your magnets should allow for a higher accuracy of timing, that or use smaller magnets.

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The old white brick

All the DIS support from MegaSquirt is geared toward the Ford EDIS. That might be one reason.

Mike

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Recognized by US Federal Courts as a Fuel Economy Expert!

The cam distributor gear drives the oil pump - the gear on the distributor doesn't, unlike many V8s. The oil pump has a separate drive gear.

EDIS is pretty straightforward to get up and going, but Megasquirt-I (and soon, Megasquirt-II) can drive other DIS systems by operating the coils directly. You do need some means of identifying the cylinders, so a 3 tooth wheel will only work if you add some sort of second trigger to identify the cylinder.

A large diameter wheel can boost accuracy a bit, but once you get past a certain point it doesn't really help. Some systems such as EDIS and Megasquirt-II can gain more accuracy from a wheel with more teeth, too.

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"Mad Scientist" Matt Cramer

'66 Dart - turbocharged 225

My blog - Mad Scientist Matt's Lair