Delco Distributor cap patent pending R

[Grahame M.]

Re: Delco Distributor cap patent pending R

Hi George,

I had a look on Paragon's site today and saw 2 different coils, both "263". One is a restoration product from GM and the other looks like it's from K & B. Did you see any advantage in the GM resto product? The only difference i can see is that "263" is embossed on the side of the coil. It may be made by K & B for GM?

Cheers

Grahame

[Dick W.]

Re: Delco Distributor cap patent pending R

Ralph

That subject would open a can of worms there are varying opinions of what the "R" stands for. Some folk are of the opinion that it is for registered trade mark and others think it stands for a change to a different resistor type ignition system. I am in the 2nd group the "R" is also on the boxes for both the Cap and Rotor such as D-308R and D-425R that is why I feel it is not a trade mark rather a change in the ignition system. Hope that helps.

[Terry M.]

Re: Delco Distributor cap patent pending R

Has anyone cut open a cap or two to prove this? I am of the opinion that without photos it didn't happen.

You can go over the whole or any of those caps (with and without an R) with an ohmmeter and you won't find any resistance.

[George J.]

Re: Delco Distributor cap patent pending R

Hi George,

I had a look on Paragon's site today and saw 2 different coils, both "263". One is a restoration product from GM and the other looks like it's from K & B. Did you see any advantage in the GM resto product? The only difference i can see is that "263" is embossed on the side of the coil. It may be made by K & B for GM?

Cheers

Grahame

Grahame,
I am not sure about the coils. I have only installed K & B's cap and rotor. I would not hesitate to use any of their products, though.

George

[Dick W.]

Re: Delco Distributor cap patent pending R

Where's Clupper when ya needs him??

[G A.]

Re: Delco Distributor cap patent pending R

It seems Terry is right, see #7 in the link below

http://www.uspatent.com/resources/entrepreneurs/entrepreneurs-faq/

[Terry M.]

Re: Delco Distributor cap patent pending R

Where's Clupper when ya needs him??

Dick,
Bill has already put in his 2 cents -- about 1975.

https://www.forums.ncrs.org/showthre...p-5-variations

And no my recent drug ingestion has not improved my memory. This was one of the five "similar threads" listed at the bottom of this thread.

[Mark D.]

Re: Delco Distributor cap patent pending R

Y'all quit resisting...it's registered. (Know It All)

[Paul O.]

Re: Delco Distributor cap patent pending R

Could it be that the change in the resistance was in the overall system not just the cap. That the resistance was now internal of the wiring not mounted external. Just a thought.

[Dick W.]

Re: Delco Distributor cap patent pending R

Could it be that the change in the resistance was in the overall system not just the cap. That the resistance was now internal of the wiring not mounted external. Just a thought.

I am thinking the R caps came about about the time the extended gap rotors came about.

[Larry M.]

Re: Delco Distributor cap patent pending R

I am thinking the R caps came about about the time the extended gap rotors came about.

Yes, that is correct.

Larry

[Dick W.]

Re: Delco Distributor cap patent pending R

Yes, that is correct.

Larry

AHA! maybe I am on to something????

[Terry M.]

Re: Delco Distributor cap patent pending R

AHA! maybe I am on to something????

The rotor is different -- not the cap. So why a need to identify a different cap? And if there was some reason to match an R cap with the "E" marked rotor (which is shorter -- not extended), why keep it a secret. There is nothing that anyone has turned up in any of the Service Manuals, TSBs, or CSNs about the R on the cap. It is an even better kept secret than the alignment of the dimple in the distributor drive gear.

Give it up and stop overlooking the obvious -- as I said a few years back.

[Paul O.]

Re: Delco Distributor cap patent pending R

Terry

Then why was the "R" added to the box identification number. The trade mark idea does not add up in that case.

[Terry M.]

Re: Delco Distributor cap patent pending R

Terry

Then why was the "R" added to the box identification number. The trade mark idea does not add up in that case.

I would agree, but lawyers do make people do unusual things.

If R = resistor why not tell people someplace in the technical information.