Issues with coils

[Sinitro]

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...

 

[nigel]

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...

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

 

[Geoff 2]

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.

 

[not so famous bob]

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.

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 >>>

 

[Don Frelier]

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.

True on the Magnums Chrysler moved the coil up front near the alternator.
These tend to run forever.

 

[not so famous bob]

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 >>>

and no ballast resistor on any of them !!!!!!

 

[Sinitro]

and no ballast resistor on any of them !!!!!!

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...

 

[RJRENTON]

and no ballast resistor on any of them !!!!!!

Tic-toc, tic-toc.......time is fleeting......you will have issues....sooner or later......you will......when you least expect it......
BOB RENTON

 

[nigel]

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...

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

 

[Sinitro]

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

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 where here many brands decrease their attention and expenses, but then the end
product quality and long-term reliability suffers...

Just my $0.02...