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Issues with coils

The ballast resistor protects the coil from overcurrent...
The ignition system needs to use matched parts...
But I do agree that some of the later ignition parts that are out-sourced from China are junko..
My personal experience is that the original Mopar OE ignition parts were of high quality,
fortunately I still have my personal stash..

Just my $0.02... :thumbsup:
 
Sinitro said:
The ballast resistor protects the coil from overcurrent...
The ignition system needs to use matched parts...
But I do agree that some of the later ignition parts that are out-sourced from China are junko..
My personal experience is that the original Mopar OE ignition parts were of high quality,
fortunately I still have my personal stash..

Just my $0.02... :thumbsup:
Click to expand...
There's no school like old school i believe is the right saying here. I'm irish but I do believe in the best quality parts are from the U.S. when we are talking about mopars. Unfortunately trying to maximise yearly profits the only way is to cut manufacturing costs which means cut corners and use cheap labour. Quality is gone to crap
 
Last edited:
I would also move the coil off the engine. Mounting the coil on the engine was a MOST stupid idea, which as done for convenience &...cost. The coil heats up from the current through it....& then gets COOKED by engine heat. And it is worse at low rpms with factory ign because the coil has current flowing through it for a longer period of time, heating it up.
On BBM, I mount the coil either on the inner guard adjacent to the dist or next to the rad. Coil is kept cool. You can also mount the coil under the dash & use a firewall connector for the HT lead. This is what I have on my car.
 
Geoff 2 said:
I would also move the coil off the engine. Mounting the coil on the engine was a MOST stupid idea, which as done for convenience &...cost. The coil heats up from the current through it....& then gets COOKED by engine heat. And it is worse at low rpms with factory ign because the coil has current flowing through it for a longer period of time, heating it up.
On BBM, I mount the coil either on the inner guard adjacent to the dist or next to the rad. Coil is kept cool. You can also mount the coil under the dash & use a firewall connector for the HT lead. This is what I have on my car.
Click to expand...

I didn't read all these posts , but if your blowing coils , you have a problem elsewhere , I have had 4 diff M S D systems on 4 diff cars all with diff coils , never had a problem with any of them >>>
 
Geoff 2 said:
I would also move the coil off the engine. Mounting the coil on the engine was a MOST stupid idea, which as done for convenience &...cost. The coil heats up from the current through it....& then gets COOKED by engine heat. And it is worse at low rpms with factory ign because the coil has current flowing through it for a longer period of time, heating it up.
On BBM, I mount the coil either on the inner guard adjacent to the dist or next to the rad. Coil is kept cool. You can also mount the coil under the dash & use a firewall connector for the HT lead. This is what I have on my car.
Click to expand...
True on the Magnums Chrysler moved the coil up front near the alternator.
These tend to run forever.
1737045523928.png
 
Sinitro said:
Awesome..
But how old are the MSD systems??
The later MSD products are sourced from China with a marginal reliability history..

Just my $0.02... :thumbsup:
Click to expand...
The whole MSD kit was purchased in 2023. My replacement coil arrived from summit. On the paperwork it clearly states the coil is from the people's Republic of China. There's no issue with wiring on the car and no need for a balast resistor. The 6AL wired direct to the battery via the red and and black cable. A 12v ignition is sent to the box and power to the coil is via the orange and black cable. I have a ground direct to the alternator body, one to the drivers side motor off the battery and one to passenger side direct from battery. Leads are MSD 8.5 super conductor and in perfect condition along with new NGK UR6 plugs gapped .039 . I'm going to try my new coil Sunday to see how it goes. Hopefully good
 
nigel said:
The whole MSD kit was purchased in 2023. My replacement coil arrived from summit. On the paperwork it clearly states the coil is from the people's Republic of China. There's no issue with wiring on the car and no need for a balast resistor. The 6AL wired direct to the battery via the red and and black cable. A 12v ignition is sent to the box and power to the coil is via the orange and black cable. I have a ground direct to the alternator body, one to the drivers side motor off the battery and one to passenger side direct from battery. Leads are MSD 8.5 super conductor and in perfect condition along with new NGK UR6 plugs gapped .039 . I'm going to try my new coil Sunday to see how it goes. Hopefully good
Click to expand...
I hope all works out for U..
Today multiple products are sourced from China, with varying degrees of quality and reliability.
China has the expertise and capability to build quality, long lasting products.
However in todays consumer market, the consumer is pushing for the best price and this puts extreme pressure
on the supply chain to monitor closely the sourcing/manufacturing processes to deliver products with high quality and reliability.
Since I spent 25 years visiting to China more than multiple times developing and sourcing consumer products for certain well-known, global brands.
It all starts with a quality design, but the only way to assure high quality is to monitor the entire manufacturing process from
design, tooling, raw materials procurement, pilot production and final assembly. But this requires having an experienced, qualified staff/team located
in China and all of this burden increases the final product cost. This is here that many brands decrease their attention and expenses, but then the end
product quality and long-term reliability suffers...

Just my $0.02... :thumbsup:
 
Last edited:
So new coil arrived Friday thanks to summit racing who i can never say enough good things about. Was unable to go near the car until Sunday to install the coil to try it. When installed the car fired up with the first tip of the key and idled like a dream. I'm going to get a e-coil to have as a spare just to be on the safe side
 
nigel said:
So new coil arrived Friday thanks to summit racing who i can never say enough good things about. Was unable to go near the car until Sunday to install the coil to try it. When installed the car fired up with the first tip of the key and idled like a dream. I'm going to get a e-coil to have as a spare just to be on the safe side
Click to expand...
please remind us which new coil you just installed and if you installed a ballast resistor this time. If you didn't, you should.
 
It was a replacement 8222 MSD Resin Blaster coil. Where do I install a balast resistor when using the MSD 6AL box and distributor? All instructions say to bypass/remove the resistor and have full 12V when cranking and in run position
 
nigel said:
It was a replacement 8222 MSD Resin Blaster coil. Where do I install a balast resistor when using the MSD 6AL box and distributor? All instructions say to bypass/remove the resistor and have full 12V when cranking and in run position
Click to expand...
that's the same coil I run with no issues and the same coil you were previously running. I'm not sure the answer to your question (will let others chime in), but if you blew multiple coils with no ballast resistor, what makes you think it will be different this time? The epoxy filled coils don't often go bad quickly for no reason (it can happen due to quality issues, but not as often as you might think). My guess is without a ballast resistor this new coil won't last 1000 miles. How quickly did the previous coils start acting up on you?
 
First coil lasted about 600 miles and got wet. I believe that could've been the cause. Second coil was on a motor that did 200 miles then was removed and stored for 6 months. The climate here in Ireland is cold and damp so I'm wondering if that's a contributing factor
 
Good point and I may be wrong on the ballast resistor with the MSD ECU. I read a few other threads and it seems since the MSD ECU works differently you don't want a ballast resistor. Sorry for any confusion I caused. Carry on:)
Should I disconnect ballast resistor when using MSD ignition?????????????????????

Leave that new coil in the car and drive it often and please report back with a success story in 6-12 mo.
 
Sinitro said:
I hope all works out for U..
Today multiple products are sourced from China, with varying degrees of quality and reliability.
China has the expertise and capability to build quality, long lasting products.
However in todays consumer market, the consumer is pushing for the best price and this puts extreme pressure
on the supply chain to monitor closely the sourcing/manufacturing processes to deliver products with high quality and reliability.
Since I spent 25 years visiting to China more than multiple times developing and sourcing consumer products for certain well-known, global brands.
It all starts with a quality design, but the only way to assure high quality is to monitor the entire manufacturing process from
design, tooling, raw materials procurement, pilot production and final assembly. But this requires having an experienced, qualified staff/team located
in China and all of this burden increases the final product cost. This is here that many brands decrease their attention and expenses, but then the end
product quality and long-term reliability suffers...

Just my $0.02... :thumbsup:
Click to expand...
I spent enough time in China in industrial facilities and agree with you 100%.
 
65CopCar said:
I spent enough time in China in industrial facilities and agree with you 100%.
Click to expand...
Yup...
Been doing it for many, many years purchases from China per year
averaged $$100 million @FOB level....
I have been asked to write a book about my China experiences.. :rolleyes:

Just my $0.02... :thumbsup:
 
MSD 6X does NOT use, or need, a bal res. The coil failures may be due to bad coils, or an internal fault in the 6X box.
 
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