Your timing with this question couldn't be better. The August 2002 issue
of Car Craft magazine has an article entitled "Cool Coatings" where they
compare the temperature of Jet Hot coated headers with the same brand
uncoated headers.
The coated headers were over 50% cooler in surface temperature.
Comparisons weren't made with stock manifolds but those could be coated as
well.
I've had Jet Hot on my headers for 8 years. No complaints!
Ray
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
----- Original Message -----
From: <Tomdamit@aol.com>
To: <aol@dakota-truck.net>
Sent: Sunday, June 30, 2002 12:07 AM
Subject: DML: Ceramic coated headers
>
> In a message dated 6/26/02 9:51:29 AM Pacific Daylight Time, Tomdamit
writes:
>
>
> >
> > >>
> >> Hi all. I live in SO. Calif. and it gets HOT here from time to time.
> >> Does anyone have experience with ceramic coated headers? I am
concerned
> >> about increases in underhood temps. I wouldn't think of uncoated
headers
> >> out here but I understand the ceramic coating headers run about 80
degrees
> >> cooler than uncoated. Is that true from your experience? How much
warmer
> >> still are the coated headers over stock manifolds? The same,
noticeably
> >> warmer or hot?
> >>
> >> I've looked in archives but not finding anything on the subject.
> >
>
>
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