Ingeborg Foco on thu 13 jun 02
Dear Group,
One of the local gentlemen has been extremely interested in my kilns and =
my operation in general and yesterday he stopped in again and finally =
popped the question. He wants me to fire an exhaust manifold in my =
bisque kiln with the idea that it will clean the surface and make it =
nice and pretty.=20
The manifold is made out of cast iron and it is "dirty and rough". He =
is reworking a 1987 Jaguar and wants all parts to be neat and tidy. =
Apparently, years ago Jaguars came with a cast iron manifold that was =
coated with a layer of a ceramic material, hence his idea of firing the =
piece (I think). This one is not coated with anything and it would seem =
a wire brush would do the job or just purchasing a new one would be a =
simple task. The manifold is not original and not even a Jaguar =
part...I believe he said it was a Chevy manifold.
I'm not really too keen on doing this but I somehow feel pressure to do =
it unless there is a good reason not to; such as cast iron is apt to =
explode, melt or damage my kiln. Does anyone have any words of wisdom.
Thanks in advance,
Sincerely,
Ingeborg
the Potter's Workshop & Gallery Inc.
=20
Dale Neese on thu 13 jun 02
Pass on it. I have heard this stuff before..Oh YOU have a kiln? "Would you
mind firing some of my work?" Or (especially back in Tennessee) "Boy!, I'll
bet you can cook a lot of barbeque groundhog in that thang!" And sometimes,
"Have you ever wondered what would happen when you put one of this 'things'
in the firing?" Don't want to know or care.
Let him take it to someone that knows what they are supposed to do rather
than screwing up your kiln.
Dale Tex
Rob Van Rens on thu 13 jun 02
AAACCKKKK! Don't do it!
If you get the piece hot enough to "clean" it (convert the iron oxide into
scale), it may start to melt. Cast malleable iron (the kind commonly used
in exhaust system applications) has a disturbingly low melting point. If he
was to get the manifold hot enough to coat it with a ceramic refractory
layer, I guarantee that you would have a puddle on the bottom of your ruined
kiln.
This is not to mention what vaporized petroleum combustion byproducts would
do to the firebrick on the inside of your kiln.
In short, tell him "not on your life". He should get a wire brush, a
propane torch, and a respirator. Elbow grease will accomplish the cleaning,
as for a ceramic coating, he's SOL.
This stuff is not intuitive; metal behaves weirdly under high-temperature
conditions. I speak from experience; before the clay big bit me, I was
(and, in fact, still am) a blacksmith.
Robert Van Rens, Workshop Coordinator
Otto Kroeger Associates
703-591-6284, x110 Phone
703-591-8338 Fax
www.typetalk.com
-----Original Message-----
From: Ingeborg Foco [mailto:ifoco@EARTHLINK.NET]
Sent: Thursday, June 13, 2002 7:45 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Exhaust Manifold
Dear Group,
One of the local gentlemen has been extremely interested in my kilns and my
operation in general and yesterday he stopped in again and finally popped
the question. He wants me to fire an exhaust manifold in my bisque kiln
with the idea that it will clean the surface and make it nice and pretty.
The manifold is made out of cast iron and it is "dirty and rough". He is
reworking a 1987 Jaguar and wants all parts to be neat and tidy.
Apparently, years ago Jaguars came with a cast iron manifold that was coated
with a layer of a ceramic material, hence his idea of firing the piece (I
think). This one is not coated with anything and it would seem a wire brush
would do the job or just purchasing a new one would be a simple task. The
manifold is not original and not even a Jaguar part...I believe he said it
was a Chevy manifold.
I'm not really too keen on doing this but I somehow feel pressure to do it
unless there is a good reason not to; such as cast iron is apt to explode,
melt or damage my kiln. Does anyone have any words of wisdom.
Thanks in advance,
Sincerely,
Ingeborg
the Potter's Workshop & Gallery Inc.
____________________________________________________________________________
__
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You may look at the archives for the list or change your subscription
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Philip Poburka on thu 13 jun 02
Dear Ingeborg!
The gentleman seems a little confused.
'Heating' the manifold will not clean it any more than the heat of the
Engine combustion gasses it was meant to direct had kept it clean...it is
not like it is an electric stove where the 'self-cleaning' feature may be
elected.
The Carbon or other pertoleum based schmutz as may be present, while it
COULD be 'burned' off, would better be cleaned by immersion in good old
Sodium Hydroxide, aka 'Caustic Soda'.
If he likes, the poor-mans recourse is 'Draino'...Vinegar may be used dilute
or not, as to neutralize the residual Alcaline from the Caustic.
The 'baked-enamel' or 'Ceramic' or 'Porclelinized' coating found on some
Automobile exhaust manifolds of certain makes or certain years may, if he
finds it to have deteriorated, or have too many 'chips' or a 'blah' color,
be sent off and re-done by companies who do that.
He may refer himself at his liesure to the 'services' section of Hemmings
Motor News for the necessary edifications on that.
I cannot envision any benifit from putting the manifold into your Kiln and
'heating' it...
Phil
las Vegas
----- Original Message -----
From: "Ingeborg Foco"
To:
Sent: Thursday, June 13, 2002 4:44 AM
Subject: Exhaust Manifold
Dear Group,
One of the local gentlemen has been extremely interested in my kilns and my
operation in general and yesterday he stopped in again and finally popped
the question. He wants me to fire an exhaust manifold in my bisque kiln
with the idea that it will clean the surface and make it nice and pretty.
The manifold is made out of cast iron and it is "dirty and rough". He is
reworking a 1987 Jaguar and wants all parts to be neat and tidy.
Apparently, years ago Jaguars came with a cast iron manifold that was coated
with a layer of a ceramic material, hence his idea of firing the piece (I
think). This one is not coated with anything and it would seem a wire brush
would do the job or just purchasing a new one would be a simple task. The
manifold is not original and not even a Jaguar part...I believe he said it
was a Chevy manifold.
I'm not really too keen on doing this but I somehow feel pressure to do it
unless there is a good reason not to; such as cast iron is apt to explode,
melt or damage my kiln. Does anyone have any words of wisdom.
Thanks in advance,
Sincerely,
Ingeborg
the Potter's Workshop & Gallery Inc.
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Ingeborg Foco on fri 14 jun 02
Dear Fellows & Melinda In Guatemala,
I sincerely appreciate all of the male help and Melinda's (on and off =
list) in regards to my "exhaust manifold" problem. Not being a car nut, =
I now know more about exhaust manifolds than I will ever need to know =
(my AC in my truck just gave up the ghost and I wish I knew more about =
that; a pickup in SW Florida without AC at this bewitching time of the =
year is the pits...but that is another story) You all gave me enough =
reasons Not to do this task.
I really appreciate men for their straight forward way of talking and =
not mousing around. Unlike us females who are always worrying about =
stepping on toes, you guys are great. I am NOT going to do it. I am =
also prepared to say NO to any further oddball requests thanks to all of =
your great advice. =20
Having always worked in relative isolation in a home/studio set up I =
have not encountered these types of visits or requests. Now that I have =
a store front, everyone wants to come in and "chat" and see the big =
OVEN. I am prepared for any future requests. Sorry, NOoooooo!
Thanks from saving me from a catastrophe. =20
=20
Ingeborg =20
Cindy Gatto on fri 14 jun 02
Hi Ingeborg:
We had a customer with an old cast iron bathtub with
cast iron feet that originally had ceramic coated feet on it. The feet have
since gotten all messed up and he wants to restore them. To make a long story
short, we fired them for him and the kiln was fine no problem at all. So good
luck in whatever you do.
Sincerely:
Cindy Gatto & Mark Petrin
The Mudpit
228 Manhattan Ave
Brooklyn NY 11206
718-218-9424
mudpitnyc@aol.com
www.mudpitnyc.com
Richard Mahaffey on fri 14 jun 02
Ingeborg,
The advice to consult Hemming motor news is good advice. But, to answer
your question as to why you should not heat his exhaust manifold, my
answer would be; it most likely will warp and cause exhaust leaks or
even ruin the manifold (without melting it could be ruined). So I would
tell him that it will warp in the kiln.
Rick Mahaffey
Potter and Motorhead
Earl Brunner on fri 14 jun 02
1. Have him give you the exact temperature that he wants it fired to.
2. Require a HUGE security deposit for potential damage to your kiln
3. Charge an arm and a leg for doing it
4. Make it specific that you do not guarantee results
alternatively
1. Say NO
Ingeborg Foco wrote:
> Dear Group,
>
> One of the local gentlemen has been extremely interested in my kilns and my operation in general and yesterday he stopped in again and finally popped the question. He wants me to fire an exhaust manifold in my bisque kiln with the idea that it will clean the surface and make it nice and pretty.
>
> The manifold is made out of cast iron and it is "dirty and rough". He is reworking a 1987 Jaguar and wants all parts to be neat and tidy. Apparently, years ago Jaguars came with a cast iron manifold that was coated with a layer of a ceramic material, hence his idea of firing the piece (I think). This one is not coated with anything and it would seem a wire brush would do the job or just purchasing a new one would be a simple task. The manifold is not original and not even a Jaguar part...I believe he said it was a Chevy manifold.
>
> I'm not really too keen on doing this but I somehow feel pressure to do it unless there is a good reason not to; such as cast iron is apt to explode, melt or damage my kiln. Does anyone have any words of wisdom.
>
> Thanks in advance,
>
> Sincerely,
>
> Ingeborg
> the Potter's Workshop & Gallery Inc.
>
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
--
Earl Brunner
http://coyote.accessnv.com/bruec
mailto:bruec@anv.net
RPeckham@COOKSONELECTRONICS.COM on fri 14 jun 02
I would pass on it. Unless you know something about heat treating cast
iron, I don't really, I work mainly with aluminum alloys, and the effect
of heat treating them. Unless you do it right, it will probably warp, I
know cast aluminum does, and I would be willing to bet that he would
probably be upset if you ruined his manifold.
Ron Collins on fri 14 jun 02
Dont you DARE do it.......unless your kiln has no value to
you........Melinda Collins, Antigua, Guatemala
Steve Mills on sat 15 jun 02
I have done this; but I only took it to 800oC, what I wanted to burn off
did so at that temperature. The original Jaguar Manifold was stove
enamelled, but only on the outside!
Guess who was (is) a car nut!
Steve
Bath
UK
In message , Ingeborg Foco writes
>Dear Group,
>
>
>One of the local gentlemen has been extremely interested in my kilns and =
>=3D
>my operation in general and yesterday he stopped in again and finally =3D
>popped the question. He wants me to fire an exhaust manifold in my =3D
>bisque kiln with the idea that it will clean the surface and make it =3D
>nice and pretty.=3D20
>
>The manifold is made out of cast iron and it is "dirty and rough". He =3D
>is reworking a 1987 Jaguar and wants all parts to be neat and tidy. =3D
>Apparently, years ago Jaguars came with a cast iron manifold that was =3D
>coated with a layer of a ceramic material, hence his idea of firing the =3D
>piece (I think). This one is not coated with anything and it would seem =
>=3D
>a wire brush would do the job or just purchasing a new one would be a =3D
>simple task. The manifold is not original and not even a Jaguar =3D
>part...I believe he said it was a Chevy manifold.
>
>I'm not really too keen on doing this but I somehow feel pressure to do =3D
>it unless there is a good reason not to; such as cast iron is apt to =3D
>explode, melt or damage my kiln. Does anyone have any words of wisdom.
>
>Thanks in advance,
>
>Sincerely,
>
>Ingeborg
>the Potter's Workshop & Gallery Inc.
>=3D20
--
Steve Mills
Bath
UK
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