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A sad tale of trying improve some OE hemi sparkplug insulating tubes
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56D500boy
Posted 2024-02-22 3:41 PM (#633853)
Subject: A sad tale of trying improve some OE hemi sparkplug insulating tubes



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A couple of weeks ago, I was screwing around with the spark plugs on my 56 Dodge D500 "Double Rocker" (aka "Hemi") engine. When I pulled one of the plug wires a bit of the plastic spark plug
wire insulator tube broke off. This was on a set of wires that I had bought from Mopar Mall back in 2016. No biggy.

Then I started poking around to see if there were any NOS insulator tubes available.

First thing, I found that the insulator tube PN as 1479 232 and that, surprisingly, seemed to be common across the board for 55-58 hemis (Dodge, Desoto and Chrysler/Imperial), despite the different engine
sizes. I guess there isn't that much difference in the distance from the valve cover to the spark plug. Who knew?

Anyway, I found what seemed to be a good used set of 10 on eBay (8 and 2 spares). It was a good Buy It Now price, so I clicked.

When I got them a week or so later, they looked pretty good. A bit oily but otherwise good. 2 had some very small chips at the big end. Barely noticeable.

But they were dirty.

And this is where I went wrong. Badly.

Instead of using solvent or brake clean (I thought them too harsh for the old plastic), I soaked the tubes in hot(ish) water and Dawn dish soap. (Good enough for oil-soaked ducklings, must be okay for...)

Either that was a bad idea or I let them soak too long but bottomline is the water/Dawn combo caused the plastic to swell, crack and crumble.

Two of the tubes are done. Maybe two aren't too bad but the other 6 are showing signs that they are going to crumble soon.

Not my plan. I should have avoided the water and used solvent to clean them up.

Now I have a better appreciation of the Mopar Mall tubes.

Live and learn. (Too soon old, too late smart)

Photos starting with the eBay Buy It Now photo and ending with a close up of the PN.



Edited by 56D500boy 2024-02-22 5:04 PM




(55-58HemiSparkPlugInsulatorTubeSet_AsPresentedOnEbay_small.jpg)



(55-58HemiSparkPlugInsulatorTubeSet_OE1479232withMoparMallTubeOnFarLeft.jpg)



(55-58HemiSparkPlugInsulatorTube_PN1479232.jpg)



(55-58HemiSparkPlugInsulatorTube_1479232.jpg)



Attachments
----------------
Attachments 55-58HemiSparkPlugInsulatorTubeSet_AsPresentedOnEbay_small.jpg (128KB - 15 downloads)
Attachments 55-58HemiSparkPlugInsulatorTubeSet_OE1479232withMoparMallTubeOnFarLeft.jpg (115KB - 11 downloads)
Attachments 55-58HemiSparkPlugInsulatorTube_PN1479232.jpg (90KB - 13 downloads)
Attachments 55-58HemiSparkPlugInsulatorTube_1479232.jpg (200KB - 14 downloads)
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hondaman1974
Posted 2024-02-22 4:21 PM (#633854 - in reply to #633853)
Subject: RE: A sad tale of trying improve some OE hemi sparkplug tubes


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hi dave, i think i have a set of these if you are interested. will have to dig through my garage to find them. i think they were in decent shape. Tony
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56D500boy
Posted 2024-02-22 5:03 PM (#633856 - in reply to #633854)
Subject: RE: A sad tale of trying improve some OE hemi sparkplug tubes



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hondaman1974 - 2024-02-22 1:21 PM
hi dave, i think i have a set of these if you are interested. will have to dig through my garage to find them. i think they were in decent shape. Tony


Tony: You got mail re: insulting tubes

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