INTAKE MANIFOLD COATINGS

By using a combination of coatings an intake manifold will run cooler and enhance performance. The bottom and head flange areas are coated with a lubricated thermal barrier thus inhibiting the transfer of heat into the manifold. This is accomplished in two ways: First, the coating sheds oil rapidly reducing the time available for the oil to transfer heat into the manifold. A good demonstration of "shedding" is to take a teflon coated pan in good condition and heat it up on the stove and add cooking oil to it. Watch how the oil pools. Then take a non-coated pan and watch how the oil films over the entire pan. Second, the coating itself is a thermal barrier and resists heat transfer.

A different coating is applied to the outside surfaces of the manifold. This has a very high emissivity factor and will allow the manifold to dissapate heat more rapidly than bare metal and is black in appearance. This allow the manifold to run cooler. Fuels and solvents normally used around engines do not affect these coatings and they also provide excellent corrosion protection. The end result is a cooler manifold, denser air fuel mixture and improved performance. The runners can also be coated with an insulating type coating keeping the charge cooler and more dense.(see intake runner coatings)

[BACK]