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My New Ignition Arrangement

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Old 04-20-2005, 02:23 PM
  #21  
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[quote name='TYSON' date='Apr 20 2005, 01:46 PM']

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oooooOOOOooo so how much did that cost? Are you going to run against the formula 3000 cars with your FD?
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Old 04-20-2005, 02:28 PM
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It cost about the same as buying 2 MSD DIS2 boxes and 4 DIS coils.
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Old 04-20-2005, 08:08 PM
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i dont know what that is.. but i want one
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Old 04-20-2005, 08:38 PM
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[quote name='TYSON' date='Apr 20 2005, 02:28 PM']It cost about the same as buying 2 MSD DIS2 boxes and 4 DIS coils.

[snapback]702536[/snapback]

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You still need the igniters right?
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Old 04-20-2005, 08:51 PM
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Not with a Haltech. Don't know about with a stock ECU.
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Old 04-21-2005, 09:15 PM
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[quote name='Cheers!' date='Apr 20 2005, 09:50 AM']yes. So?

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So if the trailing has little effect on spark, why amplify all of them. Is it some marketing gimmick or what.
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Old 04-23-2005, 06:44 AM
  #27  
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Lots of...weird...facts being thrown out there, but I dunno if it makes sense to most people.



I bet the Jacobs box got fried cause the two coils (wired in parallel) was too high of a load (i.e. low resistance / impedence) from the coils.

Check the manufacturer specs - certain CDI boxes can only go so low.

Stock FC coils are like 0.4-ohms and really on the high end in terms of resistance.

There are aftermarket coils that are well under 0.1-ohms, and running them in parallel really makes them scary for certain CDI boxes due to running almost like a dead short!



If anything you can measure the resistance over the parallel'd coils to see if they meet minimum CDI box output resistance specs...



After talking to other folks about the wastespark (leading) twin tower coil design, it's really a handicap at very high boost / power levels.

Due to the uneven loads (one under compression, the other into heavily ionized exhaust), the spark generation is uneven in the motor.

I'd prefer running at least a single coil into each leading spark plug...





-Ted
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Old 04-23-2005, 11:54 AM
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Originally Posted by RETed' date='Apr 23 2005, 06:44 AM
I bet the Jacobs box got fried cause the two coils (wired in parallel) was too high of a load (i.e. low resistance / impedence) from the coils.

Check the manufacturer specs - certain CDI boxes can only go so low.


Yeah, that's what happened the first time. Now, I run PFC > ignitor > FC1000 x 2 (parallel) > LX91 > NGK 9.



Stock FC coils are like 0.4-ohms and really on the high end in terms of resistance.

There are aftermarket coils that are well under 0.1-ohms, and running them in parallel really makes them scary for certain CDI boxes due to running almost like a dead short!
That would be the LX92 coils for sure.

If anything you can measure the resistance over the parallel'd coils to see if they meet minimum CDI box output resistance specs...


OK, I shall do that and post the findings. Thanks for your input.
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Old 05-13-2005, 08:36 PM
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tyson... any updates on your setup?



and im curious.. why didnt you get the coils setup for rotaries?
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Old 05-14-2005, 09:21 AM
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While talking to Wayne at M&W this is what he reccomended for what I wanted to do. I wanted to do 4 coils and run direct fire anyway.
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