yup, that's the ballast resistor! Most of the 2 prong ballast resistors like that are around 1 ohm so I bet it should be fine. Others here can comment for sure.
Ignition Coil Leaking Oil Replacement
- Thread starter RoadRunning
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RoadRunning
Well-Known Member
You guys have been very helpful. I keep running into perceived roadblocks.
I found here that the resistor I have is probably a 1.25 ohm for part number 254186 that I have: https://www.forabodiesonly.com/mopar/threads/new-mopar-ecu-harness-and-ballast-resistor.296537/
According to the instructions on the MSD High Vibration Blaster coil instructions, it calls for the .8 ohm resistor MSD part number 8214 so I figured I should buy that since it has a different resistance value from the resistor I currently have. When looking to buy that resistore, the question and answer area on this resistor on the Summit site states the MSD coils will not work well with the orange ECU box I have. Is anyone running this High Vibration MSD coil with the orange ECU box I have without issue?
Link: https://www.summitracing.com/parts/msd-8214/questionsanswers/
The site states:
Q:
I used this resistor with a Blaster2 coil and the orange mopar performance ECU - a few minutes after starting, the resistor was extremely hot and demaged - engine stops. I put a new one in - same result ???
Asked by ARMIN on April 30, 2017
A:
Can you get a pic of how you wired it. Label what the wires are, B+, ground, signal etc.
TERRY from IN answered on May 06, 2017
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A:
Apparently the MSD Coils which are designed to be used with the MSD capacitive discharge performance type ignitions will eventually do bad things to the Mopar ECU's. Unless your running the full MSD ignition (MSD distributor/6AL box/Blaster Coil) it will likely happen again. Try another ECU if you have a spare one or try replacing the ECU and use your old stock coil...bet it works.
GREG from PA answered on May 05, 2017
forbbodiesonly members, any advice?
I was not aware of this. Thanks for posting. I'm anxious to hear what others have to say about this.
Is the MSD blaster II ok to use with the Mopar Orange Box? What about chrome box? Dennis, you have a successful 4 yr history running the epoxy filled MSD 8222 coil - what ECU are you running (MSD?)
Is the MSD blaster II ok to use with the Mopar Orange Box? What about chrome box? Dennis, you have a successful 4 yr history running the epoxy filled MSD 8222 coil - what ECU are you running (MSD?)
I use it with the chrome box and msd resistor. Have used them with The orange box before also, no issues..don't get too excited over those Q&A posts, unless it's answered by summit's tech dept, it's just someone's opinion that may not know what they're talking about. (could be a chevy guy sabotaging the Q&A section haha)
I came across an interesting statement on another google forum post that may clarify the OP's original confusion about whether or not to run a ballast resistor with electronic ignition. The answer is YES. For a mopar orange or chrome box electronic ignition ECU, you need to run a ballast resistor, ideally one that measures 0.8 ohms resistance.
To summarize: when MSD says to run a ballast resistor for a points style ignition, what they really mean is that you should run a ballast resistor for an inductive type ignition (a mopar electronic ignition ECU (orange or chrome box) is still an inductive type ignition, but replaces the points with a transistor and circuits to achieve a longer dwell time to better saturate the coil). On the other hand, if you are running a Capacitor Discharge (CD) ignition like the MSD 6AL ECU, a ballast resistor is not required. The CD type ignition saturates the coil through the use of a big capacitor with a much higher voltage, but for a shorter period of time.
To summarize: when MSD says to run a ballast resistor for a points style ignition, what they really mean is that you should run a ballast resistor for an inductive type ignition (a mopar electronic ignition ECU (orange or chrome box) is still an inductive type ignition, but replaces the points with a transistor and circuits to achieve a longer dwell time to better saturate the coil). On the other hand, if you are running a Capacitor Discharge (CD) ignition like the MSD 6AL ECU, a ballast resistor is not required. The CD type ignition saturates the coil through the use of a big capacitor with a much higher voltage, but for a shorter period of time.
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