Trying to figure out an old ignition system part..

[SuperEd73]

Hello BITOGers,

I'm trying to figure out what a small part that's attached to the ignition system on my old '68 Dodge Polara actually does. It looks like it's about the size of an ignition condensor that would be under the distributor cap in an old points type ignition. But in this case it has one lead that runs to the positive +12V screw of the external ignition coil and the other end grounds to the intake manifold. I'm guessing it might be used as some form of ignition/electrical noise suppression for the radio but I'm not sure. I'm asking because the wire lead is basically shot. So I'm wondering if I need to actually replace it or not? I'm also wondering what it's actually called!

Thanks!

Ed B.

 

[eljefino]

Does sound like a condensor. Are resistor plugs spec'd?

 

[SuperEd73]

Eljefino,

I'm using resistor plugs now but the original spec didn't call for them. Original plugs for the engine as per the service manual are Champion J-14Y. Right now I have a set of Autolite #86 providing spark to the 383. Not even sure if a modern RJ-14Y is actually made or not. I believe the equivalent AC-Delco plugs are the R45S.

Ed B.

 

[StevieC]

My dad is a mechanic, worked for Chrysler and is Old so I'm sure he would know... I will call him later and ask him when he is home from work.

 

[beanoil]

Sounds right. I sold hundreds of those things at Radio Shack back in the day.

 

[eljefino]

If they didn't spec resistor plugs they would have wanted another gizmo to help with radio noise... hence your condensor.

Try listening to AM band lately? Hear a buzz that changes with RPM?

Don't condensors have another purpose, like saving the points? I'm weak on my old school ignition theory.

 

[robshelton]

Yep, as eljefino mentioned it's a noise suppressor to keep the radio from "Buzzing."

 

[mechtech2]

They were common on alternators [outside mount] and elsewhere.
but yes.. it's a noise suppressor, if it is from the factory.