Re: Ceramic Coatings and manifolds

[ScottyCBoy <ScottyCBoy@aol.com>]

Well I figured since everyone is giving their .02$ Here's mine.

A good friend of mine had his qtc exhaust manifold heat coated and I saw
pictures of it glowing red hot.  I then viewed the manifodl off the car and it
looks brand spankin new.. 

Cost to coat a two piece would run me about 100-150 bucks. My cost of the
manifold was significantly under 700 bucks.  

As far as horsepower gains I wouldn't expect much, the biggest gain in my
opinion would be from a reduction of intake manifold temps.

As far as I'm concerned I'm sold on the coating bits.  I heard that the Navy
uses similar military spec coatings on jet turbines to increase efficency and
life.  The cost isn't that great at all.

As far as heat soaking, Working in a foundry, the slower you cool iron, the
less stress is put on the component.  In fact this is a method of heat
treating iron, heat it up and cool very slowly, less than a degree a minute.
This process makes iron have better mechanical properties, i.e. resistance to
cracking and warping, and increasing ductility. Sudden and uneven cooling is
what causes rotors to warp as well as exhaust manifolds.

Scott