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Posted by Will (in IL) on Sunday, April 27, 2008 at 12:21:18 :
While off roading last weekend in Attica I thought I had a Ballast Resistor fail, but apparently I didn't, as the one I quickly replaced on the trial is still good. So it must have been just the flooding from the junk TBI I'm running.
So while checking and re-checking the electrical and cleaning up a few items, one of the things I did was to make sure the TBI had a good ground. The TBI is grounded through the Intake and the main battery ground goes to the started mounts. So I ran a ground wire from my ground block that everything else is grounded to to the intake.
While doing all this I considered putting the Ballast Resistors in a different location, but while checking what I thought was a bad one, and comparing it to the new one I discovered there are different resistor rating in Mopars.
I had originally (about three years ago) placed the one that came with the Mopar Ignition in series with the one with the Super Coil as the directions state (http://www.mr-gasket.com/pdf/140001.pdf), but some how burnt out the one that came with the Mopar unit. So I replaced them both with one of the dual ballast resistors that Chrysler used. Well, in doing a little research and checking, the dual units are 5 ohm and 1.2 ohm, and I'm apparently now running a total of 6.2 ohms, not the 2.1 ohms the originals probably gave me.
I'm using the Mopar Performance Electronic Conversion (DCC-3690426), and am using the Accel Super Coil (140001).
http://www.allpar.com/fix/electronic-ignition.html
http://www.moparaction.com/tech/quest1/HOW_MUCH_BALLAST.html
http://www.accel-ignition.com/SearchResults.aspx?brandId=3
So my question is in regards to the correct Ballast Resistor(s). The Mopar unit I believes uses a 1.3 +/- 0.1 ohm (it failed), and the Super Coil uses a 0.85 ohm. Can I just use a single 2.2 ohm in place of the two in series (1.3 + 0.85 = 2.15)? I have a BWD RU4 that has that rating.
Thanks,
Will
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