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Old 11-03-2009, 06:37 PM
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Ignition coil, maximum distance from engine?

What's the farthest I can mount an ignition coil from the distributor? I have a mopar 400 big block with a standard mopar electronic distributor. The engine is in an 85 Dodge Ram. I would like to mount the coil on the firewall a little to the left side of the engine but it would require about 2.5 to 3in coil wire.

Thanks,
Highway

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Old 11-03-2009, 07:24 PM
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Quote:
Originally Posted by Highway
What's the farthest I can mount an ignition coil from the distributor? I have a mopar 400 big block with a standard mopar electronic distributor. The engine is in an 85 Dodge Ram. I would like to mount the coil on the firewall a little to the left side of the engine but it would require about 2.5 to 3in coil wire.

Thanks,
Highway
2.5 - 3 inches of coil wire? That would be great. Or did you mean feet?
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Old 11-03-2009, 07:29 PM
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Quote:
Originally Posted by Highway
What's the farthest I can mount an ignition coil from the distributor? I have a mopar 400 big block with a standard mopar electronic distributor. The engine is in an 85 Dodge Ram. I would like to mount the coil on the firewall a little to the left side of the engine but it would require about 2.5 to 3in coil wire.

Thanks,
Highway
I have seen 3' long coil wires with no issue. As long as you use a quality wire.
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Old 11-03-2009, 07:33 PM
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Is'nt the distributer in the front of the engine on the 400 mopar? The coil wire will be just alittle longer then 2.5 or 3 inches don't you think if coil mounted on the firewall.JMO............Cole
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Old 11-03-2009, 08:58 PM
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The firewall isn't the best place to put an external coil, alot of heat there.
I had mine mounted on the fenderwell hump. Need less than two feet of wire.
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Old 11-04-2009, 02:54 PM
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Woops....Yep I meant feet.

Actually sqzbox, I have no fenderwells. I was planning on mounting it along with the ECU on my blower/heater deletion plate. I was thinking it would get plenty of air being that close to the wheel well opening.
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Old 11-04-2009, 07:22 PM
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Mounting it on your plate will place it in a direct path for any thing coming off the tires. Might be better to place it on the core support or if it has to be there build a shield to cover it. As to the 2' to 3' distance, with good quality wire it should not be a problem.
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