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| Distrubutorless Ignition Systems https://www.slantsix.org/forum/viewtopic.php?t=21944 |
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| Author: | Slantedbrain [ Tue Feb 20, 2007 1:44 pm ] |
| Post subject: | Distrubutorless Ignition Systems |
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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| Author: | emsvitil [ Tue Feb 20, 2007 1:47 pm ] |
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All you should need is something to cover/plug up the hole......... |
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| Author: | Sam Powell [ Tue Feb 20, 2007 3:38 pm ] |
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Tell us a little more about the kind of system you are considering using. Sam |
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| Author: | Slantedbrain [ Tue Feb 20, 2007 3:53 pm ] |
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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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| Author: | cmexlr8 [ Tue Feb 20, 2007 4:23 pm ] |
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what will you use for a trigger? |
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| Author: | Matt Cramer [ Tue Feb 20, 2007 6:23 pm ] |
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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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| Author: | Pierre [ Tue Feb 20, 2007 6:29 pm ] |
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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? |
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| Author: | Slantedbrain [ Tue Feb 20, 2007 6:58 pm ] |
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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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| Author: | Sam Powell [ Tue Feb 20, 2007 7:12 pm ] |
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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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| Author: | Slantedbrain [ Wed Feb 21, 2007 1:32 pm ] |
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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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| Author: | Pierre [ Wed Feb 21, 2007 2:02 pm ] |
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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 |
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| Author: | zedpapa [ Mon Mar 19, 2007 6:42 pm ] |
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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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| Author: | Slantedbrain [ Mon Mar 19, 2007 7:46 pm ] |
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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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| Author: | mpgmike [ Tue Mar 20, 2007 7:44 am ] |
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All the DIS support from MegaSquirt is geared toward the Ford EDIS. That might be one reason. Mike |
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| Author: | Matt Cramer [ Tue Mar 20, 2007 9:55 am ] |
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Quote: 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?
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.zedpapa 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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