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Old 08-01-2005, 01:06 PM   #1
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Default Delco coils

While searching the junk yard I noticed that most Delco ignitions burn the bottom coil
closest to the Rad. They all seem to have had replacements.
I was thinking of making a small heat sheild to redirect the hot rad. air away from the coil.
What do you guys think?
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Old 08-01-2005, 01:24 PM   #2
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naw, the only thing that heat could be caused from is the lower radiator hose. and even then, i don't think we've really had any failures from this. i'm assuming you are talking about the delco ignition on your LN3, not the magnavox?
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Old 08-01-2005, 02:50 PM   #3
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It sounds like a valid point to me. I would say that the radiator does radiate heat (might be why they call it a radiator, eh?), and could contribute to the more common failure of the front coil. I hadn't noticed that myself, but I've never looked.

There might be other factors involved, or it just might be a fluke, but it couldn't hurt to do a heatshield. You could even make it so that it would attach by sandwitching between the ICM and bracket, possibly. Just make sure it'* not going to cut into any wires.
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Old 08-02-2005, 02:04 PM   #4
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I think I'll try a heat shield when I get time.
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Old 08-04-2005, 03:39 AM   #5
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Those same coils are found underneath the exhaust manifold on 60 V6 motors, which probably generates a bit more heat then a radiator hose, of hot air coming off the radiator. They don't seem to last any longer or shorter then the coils found on 90 motors, so I don't think there'* any correlation. From what I've read and experienced, you hit 100K miles + on ANY GM motor, and you're at risk of loosing a coil, or two........or three.
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Old 08-04-2005, 03:03 PM   #6
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Yah the magnavox coils all seem to go around 60k while the Delco'* are more intermitten.
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