Here's what I know: on an aircraft engine, the sparkplug washers are copper.
Every time you replace a plug, you have to use a new copper washer, OR hang them
all up on a wire, heat them with a torch and let them air cool. I don't think
the point of this would be to make them harder or more brittle.
Geoff Branch
'74 Meejit "Yellow Peril"
'72 Innocenti 1300 Mini
----- Original Message -----
From "Trevor Boicey" <tboicey at brit.ca>
To: "Charles F. Christ" <cfchrist@earthlink.net>
Cc: "ET Piano" <etpiano@excite.com>; <spridgets@autox.team.net>
Sent: Wednesday, August 22, 2001 3:40 PM
Subject: Re: Somebody's wrong, but it ain't me
> "Charles F. Christ" wrote:
> >
> > throw the old copper washer on a cookie sheet and bake it at 400 plus
> > degrees in the oven for a while it will aneal it and you can use it over.
> > let it air cool . do not rush it with water or oil!
>
> Which brings me to a long unanswered question...
>
> If you did the above procedure with a piece of steel,
> that would anneal it properly. (soften it)
>
> However, some sources say that for copper, you want
> to do the opposite, heat it up and quench it water or
> oil. (which would harden a steel washer, but the sources
> say would soften a copper washer)
>
> ...anyone know the definitive answer?
>
> --
> Trevor Boicey, P. Eng.
> Ottawa, Canada, tboicey@brit.ca
> ICQ #17432933 http://www.brit.ca/~tboicey/
> "It seems like they have names for everything nowadays!" - Ajax
|