12-22-2023, 10:11 AM | #101 |
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Re: 47 V8 ignition mystery
Craig, Is there any way to tell if your distributor cap is seating properly? I had a cap once that failed to seat correctly and it caused the exact problem you are seeing. It seemed to be cocked slightly when attached, causing the rotor to not fire two of the cylinders due to an enlarged gap at some of the inner terminals. That would also cause the rotor to be too close to some of the other terminals, which might cause the rotor to make contact and loosen the brass tip, as you have seen. Possible?
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12-22-2023, 11:06 AM | #102 |
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Re: 47 V8 ignition mystery
^^^
2x |
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12-22-2023, 11:09 AM | #103 |
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Re: 47 V8 ignition mystery
Al, really good suggestion. I have NOS Ford on mine which fit really well but I've read the aftermarket caps may need modified slightly to fit correctly.
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12-22-2023, 12:24 PM | #104 | |
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Re: 47 V8 ignition mystery
Quote:
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12-22-2023, 12:26 PM | #105 | |
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Re: 47 V8 ignition mystery
Quote:
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12-22-2023, 12:43 PM | #106 |
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Re: 47 V8 ignition mystery
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Everywhere any of these new sparkplug wires I just installed are bent the outer layer of insulation is cracked. (See photos) Such is particularly so inside the distributor cap where they are really bent. Is that normal or could it cause a problem?
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12-22-2023, 01:14 PM | #107 | |
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Re: 47 V8 ignition mystery
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12-22-2023, 03:10 PM | #108 |
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Re: 47 V8 ignition mystery
There's your problem! I know you've metered your leads at zero ohms, however the HT current is going to take path of least resistance. These cracks in the insulation provide the escape route for the current. use decent leads.
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12-22-2023, 03:49 PM | #109 |
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Re: 47 V8 ignition mystery
I bought these spark plug wires from CW Moss. Is there any better place to buy them to get a better product? I've just emailed CW Moss about the problem and hope they do the right thing and replace them with better or refund my money so I can find better.
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Prof. Henry (The Roaming Gnome) "It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness Last edited by Old Henry; 12-22-2023 at 05:08 PM. |
12-22-2023, 04:28 PM | #110 |
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Re: 47 V8 ignition mystery
Craig, those look like the Dennis Carpenter wires I have on both my 42 and 48. Mine cracked slightly but nowhere near the extent yours are. I lubed mine with either WD 40 or silicone spray during the installation. The original wires were brown 46-48.
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12-22-2023, 04:56 PM | #111 |
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Re: 47 V8 ignition mystery
You definitely would be better off with the crap setup. You will need a new rotor for the crab, the crab cap and the snaps & pins to attach it. Most vendors carry all of it. No sharp bends with the crab.
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12-22-2023, 05:15 PM | #112 |
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Re: 47 V8 ignition mystery
Yes. They do look identical to the ones being sold on Dennis Carpenter's site. Maybe they're better than the CW Moss ones. I'll probably wait to see what CW Moss is going to do to decide.
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12-22-2023, 05:21 PM | #113 |
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Re: 47 V8 ignition mystery
This was duplicate of previous so deleted.
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Prof. Henry (The Roaming Gnome) "It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness Last edited by Old Henry; 12-22-2023 at 05:22 PM. Reason: Duplicate |
12-22-2023, 08:58 PM | #114 |
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Re: 47 V8 ignition mystery
Packard 440 from "The Brillman Company". If that works, you've found the problem and can work forwards on getting the crappy reproduction wires to work.
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12-22-2023, 09:03 PM | #115 |
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Re: 47 V8 ignition mystery
Belden 7mm metallic core wire from Napa Auto parts is my go to. Buy X amount of feet and necessary terminals and make my own.
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12-23-2023, 01:07 PM | #116 |
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Re: 47 V8 ignition mystery
I always make my own wires - because at least I then know the quality of the wire that I buy as well as the conductor ends.
I've used Packard 440 for years, but might look at the Belden 7mm metallic core wire that was mentioned up above. You can purchase high-quality ends from a variety of places. I buy the high-quality ends from MSD or Taylor (I'm sure others have them) - and crimp them with the proper dies/pliers. If I saw those cracks in my wires, I'd be concerned and would not be running them. Also, as a test, you can make ONE wire and replace the existing ones for the cylinders that are not firing and see if you see a change. If you're running the steel spark plug wire tubes (with the wires inside of them) - then the quality of the wire is SUPER important. Having all four wires running through steel tubes requires that the wires absolutely have no chance for leakage. Best of luck! |
12-23-2023, 01:45 PM | #117 | ||
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Re: 47 V8 ignition mystery
Quote:
Quote:
1) Can the authentic cotton braid copper core wire with the smooth brown outer surface with no writing be bought by the foot anywhere? (I haven't been able to find it anywhere.) 2) Are the soldered ends that go into the distributor cap available. (I haven't been able to find them.) Those can not be crimped on. They must be soldered on. (See photo)
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Prof. Henry (The Roaming Gnome) "It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness Last edited by Old Henry; 12-23-2023 at 02:04 PM. |
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12-23-2023, 01:47 PM | #118 |
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Re: 47 V8 ignition mystery
Unfortunately, with my stock 47 rabbit ears distributor cap I can't just change one wire without disassembling the entire wire loom.
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12-23-2023, 02:43 PM | #119 | |
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Re: 47 V8 ignition mystery
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
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12-23-2023, 03:06 PM | #120 | |
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Re: 47 V8 ignition mystery
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