EXHAUST SYSTEM COATINGS

Insulating the exhaust system to retain heat is commonly overlooked by most racers. After heat has performed its function in the combustion chamber, it travels out the exhaust port to the header or expansion chamber. If gases are allowed to cool they loose mass which causes them to lose velocity which reduces the scavenging effect. By insulating the exhaust pipe the gases are kept at the highest possible temperature which improves the scavenging effect and reduces underhood temperature.

Interior coatings on exhaust systems are very important, they help the exhaust gas retain its heat and it reduces part temperature, oxidation and corrosion. Most companies use the same coating on the inside that is used on the outside as this is more economical for them, however, there are several problems when doing this. The coating is very thickness sensitive and if applied too thick it will crack and flake off. Also this coating needs to be sealed to prevent corrosion and oxidation. Process Coatings uses a completely different coating that is not thickness sensitive, does not have to be sealed and will fill in voids promoting flow. The coating will also withstand substantially higher temperatures and contain the heat better. The downside to using this technology is that it is more expensive but by using this you have the highest quality coating available to protect your parts.

1. Cermakrome is the most popular kind of coating on the market today. This type of coating (metallic ceramic) is used by coating companies and manufacturers than any other material. Cermakrome is extremely popular on exhaust systems, where the high luster finish provides a very attractive durable surface. The high temperature characteristics of ceramics have been combined with metallic frits to create a coating that can withstand temperatures in excess of 1300 Fahrenheit and provides 5000 hour salt spray protection (ASTMB 117). Cermakrome polishes to a high luster, stainless/chrome appearance that will not rust, especially effective as a hard protective coating for aluminum parts. The coatings that we use are of the highest quality costing up to three times as much as our competitors use. We offer the Cermakrome finish in two versions- Standard and Show quality. The Standard finish is comparable in looks just like a chrome finish and the Show quality looks just like a chrome finish and has an additional thermal barrier applied to the inside.

2. Colorguard is a combination of special high temperature pigments that have been combined with the Black satin resin to provide a color stable, thermal barrier for exhaust system components. Available in aluminum, cast iron, gold, light blue/gray and dark blue .

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