[SEL] A spark plug question from a new member

[kevin armstrong]

    There is a 7/8"  UNS (UN SPECIAL) threaded plug it is not a tapered 
thread but is one that is fitted to my "Engine" which is a copy of a Fuller 
and Jjohnson. and some one fitted a tapered plug stuffing up the thread.


Kevin & Lorraine Armstrong
Collectors of old things
Perth
WA
Australia
Vintage Tractor & Machinery Association member
V.C.C. of WA. member
k_armstrong at arach.net.au
www.oldengine.org/members/armstrong

----- Original Message ----- 
From: "peter ogborne" <jopeter at omninet.net.au>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Wednesday, May 23, 2007 6:45 AM
Subject: Re: [SEL] A spark plug question from a new member


> Glen ,either make or get some to do it for you, an adaptor to screw into
> your 18 mm plug hole.It is then tapped to take 14 mm. The latter size 
> plugs
> you will get for no cost at your local tune up centre....they throw them 
> out
> .As some one said these old engines will run on just about any plug.
> ----- Original Message ----- 
> From: "Glen Harris" <astfgl at iamnota.org>
> To: <sel at lists.stationary-engine.com>
> Sent: Tuesday, May 22, 2007 6:38 PM
> 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)
>> _______________________________________________
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>> SEL at lists.stationary-engine.com
>> http://www.stationary-engine.com/mailman/listinfo/sel
>>
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>
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