FuelSaving2

Powerkote Improves Fuel and Power!

Tests carried out in South Africa by Malcom Kinsey, a member of the Guild of Automotive Journalists produced some outstanding results. Three stop standard Toyotas were coated. The pistons, cylinder heads, intake and exhaust manifolds were coated with Powerkote ceramic coatings, these were the results:

                                                                   0-100                                        Top Speed                                      1/100km

Toyota Tazz 1300

Standard                                                     12.8 sec                                      168 km/h                                          9.3

Coated                                                        11.2                                               177                                                 7.9

Toyota Corolla 1.6

Standard                                                     10.3                                               185                                                 9.0

Coated                                                        9.7                                                190                                                 8.1

Toyota Corolla 1.8

Standard                                                      9.9                                                188                                                 9.4

Coated                                                         9.1                                                194                                                 8.0

Coating Exhaust Manifolds

Exhaust manifolds can either be a cast iron, factory-type manifold or a tube steel header typically used in performance applications, though they are becoming very common in OEM applications.
There are a variety of reasons for coating an exhaust manifold header.

#1 Corrosion protection. The manifold will live longer as well as look nicer. The coating being a even layer allows the heat to move faster and more evenly over the metal, this elevates cracking and hotspots.

#2 The coating is a thermal barrier, thus keeping heat within the manifold or header.

There are a number of benefits for this. First, by keeping heat within the manifold, you're going to accelerate the exhaust gas velocity which reduces back pressure and reduces fuel contamination due to reversion. This is a performance benefit which applies to both petrol and diesel engines. Coating the exhaust turbo housing along with the exhaust manifold spools up the turbo faster and reduces lag, this combination increases power and in turn reduces fuel consumption.

Second, you'll reduce the surface temperature of the manifold. If there is a component close to it, it will not see as much heat as it would with an uncoated manifold. In addition, not as much heat will be radiated under the hood or into the engine compartment. This reduces the under hood temperature which, again, reduces the temperature of surrounding parts, such as, alternators and starters. It also reduces the amount of heat that can be drawn in through the carburetor, which is a secondary performance benefit. There are a variety of coatings that can be used on exhaust manifolds or headers.