Is my alternator overcharging?? - Team Camaro Tech
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post #1 of 8 (permalink) Old Aug 1st, 14, 09:10 AM Thread Starter
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Is my alternator overcharging??

I have a brand new 383 stroker crate motor. I have the ignition box set up with the E-core style coil mounted on the firewall. My question is, why are my coils going bad? I have had two coils go bad in the last 3 weeks. (Summit brand coils) I'll be cruising along and all of a sudden the car looses power, starts missing then shuts off and won't start. Replace the coil and good to go again. It should be known that both coils were to hot to touch when this happened. So what is causing them to apparently overheat and fry. I just replaced the 2nd one with a Petronix Flamethrower coil to see if a better coil would make a difference. Somebody told me it sounds like my alternator may be overcharging. I do get a reading on my volt meter in the car of 15. I put a meter on the battery when the car is running and get a reading of 14.63. Is that to high. Someone also says bad plug wires or to wide spark plug gap. New plugs and wires, gapped correctly. What else do I look for or is it the alternator. Thanks in advance for any input.
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post #2 of 8 (permalink) Old Aug 1st, 14, 09:21 AM
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Re: Is my alternator overcharging??

Just a thought, but do those coils require a ballast resistor?
- Rob

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post #3 of 8 (permalink) Old Aug 1st, 14, 10:05 AM
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Re: Is my alternator overcharging??

Another thought, are they epoxy or oil filled coils?

If oil, they must be mounted vertical only, anything else and they will overheat and fry...

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post #4 of 8 (permalink) Old Aug 1st, 14, 10:08 AM Thread Starter
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Re: Is my alternator overcharging??

Quote:
Originally Posted by NH69Z28RS View Post
Another thought, are they epoxy or oil filled coils?

If oil, they must be mounted vertical only, anything else and they will overheat and fry...
No oil, epoxy.
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post #5 of 8 (permalink) Old Aug 1st, 14, 10:12 AM Thread Starter
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Re: Is my alternator overcharging??

Quote:
Originally Posted by rtchaney View Post
Just a thought, but do those coils require a ballast resistor?
- Rob
From my understanding, no ballast resistor is required if not a point system or when using an ignition box. Anybody correct me if I'm wrong.
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post #6 of 8 (permalink) Old Aug 1st, 14, 03:05 PM
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Re: Is my alternator overcharging??

In this country, most coils have a part number on the base which include a 6 or maybe a 9 or a 12 this generally indicates if it is a 12v coil or a 6v ballast type coil

If u use the wrong one, either way around, after around 10 / 20 mins or so the car engine firing stats to break up , the cut out.... it then sort of wants to fire but doesnt, more trying doesnt even want to fire up.... wait for 20 mins 1/2 hr , fires up and repeats.

The stock wiring ign to coil is a ballast (resistance ) wire.. if running modern HEI hi engery type ign systems this needs to be by passed or replaced with a stand wire

If the ballast wire is faulty, and using original ballast coil u can then bypass the the ballast wire and use a ceramic dodge/ ford or an Aussie GM type ballast resistor mounted on the fire wall, then to the coil.

If u have a modern type ign will need 12v off the ign to coil wire

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post #7 of 8 (permalink) Old Aug 2nd, 14, 02:56 PM Thread Starter
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Re: Is my alternator overcharging??

Quote:
Originally Posted by Steptoe View Post
In this country, most coils have a part number on the base which include a 6 or maybe a 9 or a 12 this generally indicates if it is a 12v coil or a 6v ballast type coil

If u use the wrong one, either way around, after around 10 / 20 mins or so the car engine firing stats to break up , the cut out.... it then sort of wants to fire but doesnt, more trying doesnt even want to fire up.... wait for 20 mins 1/2 hr , fires up and repeats.

The stock wiring ign to coil is a ballast (resistance ) wire.. if running modern HEI hi engery type ign systems this needs to be by passed or replaced with a stand wire

If the ballast wire is faulty, and using original ballast coil u can then bypass the the ballast wire and use a ceramic dodge/ ford or an Aussie GM type ballast resistor mounted on the fire wall, then to the coil.

If u have a modern type ign will need 12v off the ign to coil wire
New ignition system, all new wiring harness with a 12v ignition wire to coil. MSD ignition style box with e-core style ignition coil. I just think that 14.6 reading at the battery when the engine is running is a little high burning up the coils, I don't know what the norm is. Thought it was 13-13.5 or something like that.
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post #8 of 8 (permalink) Old Aug 5th, 14, 07:58 AM
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Re: Is my alternator overcharging??

https://www.camaros.net/forums/showth...05#post2034505

This might help !

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