[SEL] A spark plug question from a new member

[Elden DuRand]

Glen:

Welcome to the list!

I think you've got a common (for it's time) "Model T" spark plug - after the car which used them.

The thread is standard one-half inch pipe thread.

It's available new from at least two manufacturers, Champion and Autolite.  In the U.S. they can be gotten (usually on order) from major auto parts stores.

As a side note.......Most of these engines don't care what brand or heat range of plug they have as long as it's good enough to produce a spark under compression.  Just stick a good plug in it and you'll be fine.

Take care - Elden DuRand
edurand at mchsi.com
http://www.oldengine.org/members/durand 

> -----Original Message-----
> From: sel-bounces at lists.stationary-engine.com
> [mailto:sel-bounces at lists.stationary-engine.com]On
>  Behalf Of Glen Harris
> Sent: Tuesday, May 22, 2007 05:39 AM
> To: sel at lists.stationary-engine.com
> Subject: [SEL] A spark plug question from a new member
> 
> 
> Hi, all. This is my first post to the list, and I 
> apologize if my 
> question is obvious, but I'm totally confused and 
> Google has failed me.
> 
> Both my father and I have new (old) Buzacott 3HP 
> engines. His is an 
> external tank model in somewhat sparse condition, 
> while mine has a 
> hopper with a fair amount of rust.
> 
> There's a long way to go before either is 
> anywhere near running 
> condition, but one thing we have both done is 
> take the spark plugs out 
> and tried to find spares for me and non-rusty 
> ones for him.
> 
> Both plugs have a taper thread, and mine measures 
> 0.805" to 0.840" major 
> diameter at 14tpi. Dad's plug is marked Edison 
> Albanitum 14-S and mine 
> is a Champion A-25. The closest matching thread I 
> can find is NPT 14tpi 
> 0.840".
> 
> I can't find any reference to the Edison plus at 
> all, and the A-25 is 
> mentioned to be 1/2" in several on-line 
> references, which is way smaller 
> than what I have here.
> 
> Can some bright spark please shed some light on 
> these plugs.
> 
> Thanks, glen.
> (Townsville, Australia)