Plug Wire Tubes

Ken/Alabama

Ken/Alabama

Well-known member
Got these plug wire tubes with only two holes facing the heads and one on the inside facing the intake. All the others I have has three holes facing the head . What gives?��
 

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seems like the '42 distributor has 2 wires that have to cross over to the opposite side of the engine.? i don't understand why.
 
These conduits are used with the "crab" dist cap, '42-'44.
The The firing order of the crab cap dictates that two wires must cross.
Most hot rodders do this at the cap & dispose of the conduits.
 
The TRUE '42 conduits had a small metal tube that fit from one side to the other for the two wires to cross. The photo in the original post is NOT 42.
 
Kube said:
The TRUE '42 conduits had a small metal tube that fit from one side to the other for the two wires to cross. The photo in the original post is NOT 42.
Click to expand...

I've fussed with '42s a couple of times and have not seen a metal tube on the cross over wires, only a coated sleeve, like a small version of a head lite loom.

How about a part number for the metal tube ?
 
42merc said:
I've fussed with '42s a couple of times and have not seen a metal tube on the cross over wires, only a coated sleeve, like a small version of a head lite loom.

How about a part number for the metal tube ?
Click to expand...

I'll try to get a photo. They are scarce. No doubt got tossed when the wires were serviced.
 
Mike I do not doubt you either, but all the NOS 21a tubes I have do not have a metal cross over (like the Lincoln’s had) local to me there is a super low mileage 42 4 door and it has a tar covered covering over the cross over wires but no metal shield. Page 5-9 of the clubs book states they had a braided heat shield... I’m confused
 
I can next time I am around it it’s in Nashville a hour from me. I would not wish to use it as a sure fire example. I would like to figure out the confusion in my mind. I’m certain the tubes I have that are 21a are service parts


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Mike,
The metal tube thing makes since as the Lincoln’s have it, do you have a photo of them with the tube? Somewhere at home I have some photos of the local 42 I’ll see if I can find them as I’m not wanting to drive an hour for a photo.


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I have a number of NOS parts from a bought out dealership that were replacement parts from when Ford no longer accepted returns I think in the mid 50s.
 
I guess it's entirely possible that I am the confused one here, but whether there is an extra "crossover" hole on the opposite side or not, that still doesn't explain the need for the AWOL front hole for a plug wire to fire the front (#5) cylinder. DD


420381
 
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As you can see I have my fair share of these exact tubes in question.
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I looked in my 1944 Canadian parts catalog. It lists two different conduit versions for the 21A type cap..

21A-12280-B ---RH 21A-12281 --- LH and 21A-12110 Ignition cable conduit (this is obviously a crossover conduit, but it does not say if it is metal like the Lincolns or braided like the Early Ford V-8 41-48 book states) These are listed for 1942-44

It also lists

C31A-12281 --LH and C31A- 12280-B -- RH these are listed for 1944 only and obviously likely military
 
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