GMC Motorhome Digest V2 #190

chuck will

New member
Nov 18, 1997
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Good Question about the Guarantee! Cory's address is listed below let's ask him!
The purchase of the Thornly Headers from Thornly may be void if somebody else has
to take off the finish that Thornly puts on them, but how about if Thornly provides
the header directly to HPC and they do the finish. I don't think you can get a
CERAMIC COATING from Thoornly direct. They put on what I have understood is a
similar coating or maybe the saame as Jet Hot Coatings. It is a very shiny surface
and the inside is not done. As you can see I am forwarding this to Cory. Hope he
answers the Digest as well as me. Thanks Chuck in Lompoc.

> GMC Motorhome Digest Saturday, January 9 1999 Volume 02 : Number 190
>
> ory Ure
>
> ------------------------------
>
> Date: Sat, 9 Jan 1999 11:59:22 EST
> From: Adohen
> Subject: Re: GMC: Fact or fiction you decide in Coatings for exhaust headers
>
> Doesn't Thorley void the warranty on the hedders if they are ceramic coated
> other than by Thorley?
>
> 2 cents
>
> Scott Adohen
>
> ------------------------------
>
>
>
 
[ADMIN note - the following is Cory Ure's response to Chuck Will. It
was HTML encoded and in the conversion to plain text, some special
characters were lost. Patrick]

To my knowledge Thorley does not void the warranty on the headers, but I
know that if there is a warranty problem with the header (e.i. cracked
weld) Thorley will not cover the price spent on the coating. The
Thorley's are good allies of HPC, and Doug is a personal friend, so I
have to feel the above is accurate. Thorley headers come from the
manufacturer with an "Industrial Coating" which is just a nickel plating.
This is better than paint for corrosion protection but offers little in
the way of thermal benefits or protection.

The coating actually helps extend the life of the header, not just
against rust and corrosion, but against thermal fatigue and oxidation.
This is where the header will crack or develop oxide scale on the
inside. Most header failures are due to cyclic heat, not rust. The
process of heating to 1000degF and cooling off and heating again, takes
it's toll on steel.

Please visit our web site at http://www.hpcoatings.com/ for more
information, follow the links for HiPerCoat and HiPerCoat Extreme on
the http://www.hpcoatings.com/hpcauto.htm link for more information.
Also, feel free to email me at coryu with any questions
you may have.

Best regards,

Cory Ure
Director of Marketing
HPC, Inc.