>Thats not entirely true. The HPC coatings are not a true ceramic coating and
>they are a sacrificial coating.
They are both a ceramic and sacrificial - depending on the coating that you
buy. The coating on my headers is ceramic (alumina based) and sacrificial.
> The true ceramic coating that I have on my
>thorley headers is from Swain technology:
>http://www.swaintech.com/header.html
Swain also applies several types of ceramic, including a non-reactive
insulator.
>We have talked about this in the past but guess it got lost in the clutter.
>If you want a nice looking header get a HPC coating. If you want one that
>really knocks the heat down, than there is only one company that produces a
>true ceramic coating and that is Swain.
The real functional choice that you have is between sacrificial and
non-sacrificial Ceramic. I chose the sacrificial coating because the "pure"
ceramic only works to protect the exhaust so long as there are no cracks,
chips, or other damage to the coating. Once the barrier is broken,
corrosion starts and external temps start rising. For some performance
information about HPC coatings' temp characteristics, see
http://www.hpcoatings.com/hightemp.html
Like Swain, HPC coatings also reduce ambient temps and header temps.
Just a little more information FWIW.
Henry
>they are a sacrificial coating.
They are both a ceramic and sacrificial - depending on the coating that you
buy. The coating on my headers is ceramic (alumina based) and sacrificial.
> The true ceramic coating that I have on my
>thorley headers is from Swain technology:
>http://www.swaintech.com/header.html
Swain also applies several types of ceramic, including a non-reactive
insulator.
>We have talked about this in the past but guess it got lost in the clutter.
>If you want a nice looking header get a HPC coating. If you want one that
>really knocks the heat down, than there is only one company that produces a
>true ceramic coating and that is Swain.
The real functional choice that you have is between sacrificial and
non-sacrificial Ceramic. I chose the sacrificial coating because the "pure"
ceramic only works to protect the exhaust so long as there are no cracks,
chips, or other damage to the coating. Once the barrier is broken,
corrosion starts and external temps start rising. For some performance
information about HPC coatings' temp characteristics, see
http://www.hpcoatings.com/hightemp.html
Like Swain, HPC coatings also reduce ambient temps and header temps.
Just a little more information FWIW.
Henry
