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pcmenten
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Group: Forum Members
Last Active: 8 Years Ago
Posts: 375,
Visits: 1.1K
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Steve mentioned the issue of having a good ground for the ignition to run right. I've run into that, too. It occurred to me that it might be worthwhile to run the ground out along with the other wires and connect it to both the coil ground connection and the amplifier ground connection. Bad grounds are hard to diagnose.
Best regards,
Paul Menten
Meridian, Idaho
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GREENBIRD56
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Group: Forum Members
Last Active: Last Year
Posts: 1.7K,
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Birdman - the patch cord attaches the Duraspark trigger to the MSD "red box". You are running yours off the points now correct? The red box operates the coil - the dizzy trigger tells the box when to fire it.
Steve Metzger Tucson, Arizona
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55Birdman
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Group: Forum Members
Last Active: 12 Years Ago
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I have petronix innards in the dizzy now with MSD 6 AL hooked up to that
 55Birdman  Hickory NC
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mctim64
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Group: Forum Members
Last Active: 6 Years Ago
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So with this patch cord and MSD box hooked to a Duraspark moifided Y dizzy you are ready to go? No other "black boxes" right.
 God Bless. Tim http://yblockguy.com/
350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor
tim@yblockguy.com Visalia, California Just west of the Sequoias
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55Birdman
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Group: Forum Members
Last Active: 12 Years Ago
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Tim, thats what it looks like to me. I just never considered the duraspark setup. I have had the petronix in for 8 years and no problems. Just something else to look at. I think I will get all the parts and make one up. I am totally rewiring the car now and this will be something to add. May be worth it. I got 20 bucks in my petronix now. So...
55Birdman Hickory NC
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HoLun
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Group: Forum Members
Last Active: 4 Years Ago
Posts: 197,
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I thought you have the Ignition controlled by the Megasquirt, I got the MSII and running the duraspark distributor, this thing is sweet, you can have any the advance curve anyway you want with a few key storke on the laptop. and the MSII works great with the pickup coil in the duraspark distributor. I got the engine to idle but havent worked on it for a while, as my daily driver need an engine transplant. I need to make a plate to lock the mechanical advance in place and get rid of the vac adv pot. and i will have fully electronically controlled ignition. and on the distributor themselves, I dont have them with me to look at, but arn't they physically about the same? could you just swap the gear and drop in the Duraspark unit?
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charliemccraney
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Group: Moderators
Last Active: 30 minutes ago
Posts: 6.1K,
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The distributor bodies of original Y-block distributors and the later replacement distributors and duraspark distributors have different bodies and advance weight setups. The replacement Autolites have the same body as the duraspark so the components can just be swapped on.
Lawrenceville, GA
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Hollow Head
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Group: Forum Members
Last Active: Last Year
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HoLun, we don't have the igniton control by the Mega so far. With that the things would be totally different with igniton retard by the knock sensor, retard by the boost level and so on we could use more advance than that 33 degrees that we used at the dyno with 98 octane gasoline. And of course it would give us an opportunity to use launch control and Anti-Lag system.  http://www.rallycars.com/Cars/bangbang.html Maybe some day all those will be at use  . LordMrFord is working on to get his engine running with crank triggering system and direct ignition. It's close but... Lots of problems 
 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)
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GREENBIRD56
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Group: Forum Members
Last Active: Last Year
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This whole thing revolves around putting a Duraspark II trigger nto one of the two later types of Y-block distributors (that Charlie described). The early one takes a modified rotor shaft - the late just takes some salvage parts in reasonable condition. When you are done - you have a dizzy with whatever advance features you choose to put in there - locked up, pure mechanical -or mechanical plus vacuum - your choice. MSD has used the Ford trigger in their units - and I assume for reliability issues - the parts aren't particulary cheap to produce. The reason for its reliability is that it doesn't use external power to produce a signal - only a complete circuit. You can clamp the finished dizzy in a vice, spin it with a drill motor and the two detector coil leads (joined) will show the AC signal needed to run all sorts of ignition (red or black) boxes. This is not a "Hall effect" arrangement. It spins the 8 pole reluctor in a permanent magnet field and generates an independent sine wave signal. The digital control devices use the zero voltage crossing point of the AC as a binary "off" and start continuously counting. If you don't want fuel injection - don't have a red box - just want a cheap, modern "no points" electronically fired coil ignition - it will work. If you want the high zoot stuff - it will run that too. Your choice.
Steve Metzger Tucson, Arizona
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yehaabill
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Group: Forum Members
Last Active: 10 Years Ago
Posts: 426,
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Steve or ? I'm still trying to build this dura-spark dist and I have another question, in your earlier post#21157 you mentioned someone buying two dizzy's and swaping the parts in one nite. What about the rotor shaft? I got your deal on machining the point cam off etc, but is there a dizzy out there that doesn't require that? (upper shaft a strait swap-out without machine work?) I can't see the forrest for the trees I guess!!!!!! Thanks Bill
Bill Pelham,Al
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