Motometer

[M2M]

[M2M]

[M2M]

These plugs sound real nice...are they an alternative to a hi-comp head and Mitchell overdrive???

[M2M]

[M2M]

7/8-18 BUS AND TRUCK SPECIAL

[whirnot]

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Originally Posted by M2M

These plugs sound real nice...are they an alternative to a hi-comp head and Mitchell overdrive???

Send me a set, I will try them and let you know.......

[JoeCB]

How do they work? My guess from looking at the picture is a ground electrode that moves away from the center electrode upon heating, thus creating a larger gap. The "C" shape of the ground electrode will expand with heat. I wonder about metal fatigue? broken pieces rattling around in the combustion chamber!

Joe B

[M2M]

Originally Posted by JoeCB

How do they work? My guess from looking at the picture is a ground electrode that moves away from the center electrode upon heating, thus creating a larger gap. The "C" shape of the ground electrode will expand with heat. I wonder about metal fatigue? broken pieces rattling around in the combustion chamber!
Joe B

Don't normal plug electrodes also create a larger gap when hot? If designed and made well, perhaps they might actually work?


Know a guy who has NOS set of these, but will not sell cheap

[Werner]

I drive modern high tech NGK with iridium electrode. Runs very nice around when the engine is cold in the lower idle. Does not get sooty. Don't glow-fire advance.

[M2M]

Originally Posted by Werner

I drive modern high tech NGK with iridium electrode. Runs very nice around when the engine is cold in the lower idle. Does not get sooty. Don't glow-fire advance.

No offence, but no thank you. I'm not in the hobby for modern high tech except when it comes to safety such as LED lights. NOS plugs work fine and look cool and correct. If you extend the "modern is better" logic you end up with a Toyota engine in the car.

[M2M]

[M2M]

It seems these plugs had a number of different designs.

[30 Closed Cab PU]

Originally Posted by M2M

No offence, but no thank you. I'm not in the hobby for modern high tech except when it comes to safety such as LED lights. NOS plugs work fine and look cool and correct. If you extend the "modern is better" logic you end up with a Toyota engine in the car.

I see both sides, fun to keep things as they are, but with possible safety improvements. Also fun to try something to see what happens just for grins and giggles,. Either way it is a fun hobby.

[Werner]

You can also convert it so that you do not see the modern technology.

[The Master Cylinder]

Originally Posted by Werner

You can also convert it so that you do not see the modern technology.

Just out of curiosity, what NGK plug are you using?

[Werner]

Das ist: NGK BPR 6 EiX

[Joop]

:-((

[M2M]

Originally Posted by Werner

You can also convert it so that you do not see the modern technology.

Sorry, your plug looks awful compared to a 3X or other vintage plug. The other plug in your photo as a comparison is not a vintage plug.

And are you saying that 3X, Edison, Stitt plugs do not run well in a standard Model A engine?

Rather than reinventing the wheel why don't you, for example, come up with an LED headlight that works properly...that would be something positive.

[M2M]

Originally Posted by Joop

:-((

Joop, my comments were aimed at Werner...your plug looked fine. NOS 3X and Edison and other 1920-30s plugs are not cheap so I can understand the need for cheaper alternatives. The issue I have is the suggestion that dressed up modern plugs provide some sort of real world advantage in a stock Model A engine. I've heard nothing but praise for brand name pre-war plugs.