1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Installed Direct Fire 2nd Gen Coil today

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Old Jul 26, 2003 | 08:25 PM
  #26  
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Good work Bob, keep us posted!
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Old Aug 6, 2003 | 07:34 PM
  #27  
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Originally posted by nimrodTT
The signal coming from the pickups won't fire the ignitor. I tried it; it didn't work. If you figure out why, let me know.
Originally posted by inittab


So I slapped this ol' direct fire setup back on with the resistor in place. So far so good but I've only driven about 15 miles. The car pulls REAL strong in the high RPM's now.

I'll keep ya'll posted on how it performs.
which makes me wonder how he did this?
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Old Aug 6, 2003 | 07:55 PM
  #28  
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nimrodTT was referring to the pickups firing the 2nd gen ignitor which I didn't use. I'm firing the 2nd gen coil with the stock J109 ignitor. The only two parts I used off the 2nd gen is the coil and the ballast resistor.

BTW, it continues to work quite well!
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Old Aug 6, 2003 | 11:32 PM
  #29  
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referring to your pics the black wire with the resistor is primary winding 12v pos. right? and the heat transfer paste like the stuff that goes on a processor in my computer right. The 81-85 dizzy signals L1 then L2 then signals "ok T1 T2 fire at the same time right??? so why doesnt any one put in a second gen dizzy /mag. pick up then get the trailing coils and run it with a 12a a Or is this just a big brain fart
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Old Aug 7, 2003 | 12:56 AM
  #30  
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Originally posted by rotaryaddiction
referring to your pics the black wire with the resistor is primary winding 12v pos. right? and the heat transfer paste like the stuff that goes on a processor in my computer right. The 81-85 dizzy signals L1 then L2 then signals "ok T1 T2 fire at the same time right??? so why doesnt any one put in a second gen dizzy /mag. pick up then get the trailing coils and run it with a 12a a Or is this just a big brain fart
You can't use the 2nd gen crank angle sensor without an ECU. The CAS triggers the ECU which then sends a signal to the ignitors.

Also, in a wasted spark setup the leading plugs fire at the same time not the trailing.
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Old Aug 18, 2003 | 09:32 PM
  #31  
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can you please explain how you rewired the stock ignitor into the coil wiring? does it still work?
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Old Aug 19, 2003 | 06:52 AM
  #32  
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There's not much to explain. I simply hooked up the (-) and (+) wires from the old coil to the corresponding terminals on the 2nd gen coil. The only difference is that I installed the 2nd Gen ballast resistor on the (+) wire. That's it!

BTW, I have about 800 miles on this setup and it's still work'n great! The engine pulls very strong in the high RPM's to the point where it lurches forward between gears.
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Old Aug 20, 2003 | 05:41 PM
  #33  
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please check PM
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Old Aug 20, 2003 | 07:21 PM
  #34  
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Originally posted by REVHED
You can't use the 2nd gen crank angle sensor without an ECU. The CAS triggers the ECU which then sends a signal to the ignitors.
Not entirely sure thats true. I got a buddy racing in EP whos using a CAS and MSD boxes (1st gen), but he wont let me look under the CAS cover.
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Old Aug 20, 2003 | 07:48 PM
  #35  
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lol, PUNCH THAT GUY IN THE FACE!
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Old Aug 20, 2003 | 08:02 PM
  #36  
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Hey all racers have SOME secrets ya know.
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Old Aug 20, 2003 | 09:18 PM
  #37  
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So let me get all of this straight: If you take a 2nd gen direct-fire ignition and coil setup, slap it onto a 12A, the engine actually idles smoother and gets better response at high RPMs ?
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Old Aug 20, 2003 | 10:26 PM
  #38  
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does anyone have the link to the site that explains how to put this in......ive seen it....im looking into this whole setup..

i wonder how itll do with a dellorto carb setup
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Old Aug 20, 2003 | 10:28 PM
  #39  
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Originally posted by The_Dude
So let me get all of this straight: If you take a 2nd gen direct-fire ignition and coil setup, slap it onto a 12A, the engine actually idles smoother and gets better response at high RPMs ?
i think that i am afraid to say.... YESSSSS WOO WOOOOOOOOOO!!!!!!!! but how to do it? i have no ***** fuggin clue.
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Old Aug 21, 2003 | 06:40 PM
  #40  
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just linking this to Another Direct Fire Thread
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Old Aug 21, 2003 | 07:55 PM
  #41  
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I've got a lot of parts left over from my '91. I've got a CAS, both coils, and a computer from it. Does it mean i can get it to work w/2nd gen ignitors on my trailings since i already have an msd on the leadings. Or what else would i need if anyone knows?
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Old Aug 21, 2003 | 08:01 PM
  #42  
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Originally posted by diabolical1
just linking this to Another Direct Fire Thread
Here's a thread by FD Racer entitled FD Direct ignition Coil in FB.... it works! that is also very relevant.
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Old Sep 11, 2003 | 02:39 PM
  #43  
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Is it still running w/ the ballast resistor?
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Old Sep 11, 2003 | 03:00 PM
  #44  
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yup! still run'n very strong! No more idling hickups and the top end is very strong.

EDIT: oh... and I'm getting between 1 and 3 more miles per gallon

Last edited by inittab; Sep 11, 2003 at 03:25 PM.
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Old Sep 11, 2003 | 03:07 PM
  #45  
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Sounds like the ignition problem in my soon-to-be MS powered S5 FC is very well solved
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Old Nov 6, 2003 | 06:57 PM
  #46  
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where exactly is the balast resistor on the FC? Located in the wiring harness leading to the coil or inside the coil's ignitor?
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Old Nov 6, 2003 | 07:59 PM
  #47  
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You may have solved the mystery, cool.

btw, I've been running a 3rd gen coil for over a year now with the one stock ignitor and no resistors. No problems at all. Too bad FD leading coils are so much harder to find than FC ones.

edit: *Almost a year now*

Last edited by FD Racer; Nov 6, 2003 at 08:04 PM.
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Old Nov 7, 2003 | 03:28 AM
  #48  
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If I remember correctly, from READING THIS THREAD (shame on you for not), the ballast resistor is located deep down inside the little box that's bolted to the FC leading coil. Just tear it apart carefully and locate it.

Ok, I just reviewed this thread and found what you're looking for (sort of). Look at the bottom of page one of this thread. innitab found the resistor, but the pic he posted is not working at this time.

Anyway, it's in there. Hopefully innitab will come online soon and be of more help.
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Old Nov 7, 2003 | 12:40 PM
  #49  
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yeah the picture didn't load up and I was kinna confused about it's location so I broke out the wiring diagram. I think I know where it is.
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Old Nov 7, 2003 | 12:48 PM
  #50  
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From: https://www2.mazda.com/en/100th/
Originally posted by Makenzie71
yeah the picture didn't load up and I was kinna confused about it's location so I broke out the wiring diagram. I think I know where it is.
if you have the whole coil and ignitor pack in your hane and take the back cover off of the ignitor, you'll see it in there

mike
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