Metal Finishing or coating can be done on various objects for various reasons. One such reason is to coat engine parts both for performance & aesthetic purposes. It is very important that before having any engine part coated you make sure the intended coating is not only the right coating for that part but also safe as well. In fact, Jim with JnJ Auto Service points out that when chrome plating a head gasket or any other engine part that is designed to dissipate heat, the plating can reduce the amount of heat that can be dissipated or released from that engine part. In some cases, heat loss is actually reduced which can cause bigger problems not only for that engine part but for the entire engine of your vehicle. However, it is important to note that when an engine part is coated correctly it can help to add lubricity, corrosion protection, and heat management while also enhancing cosmetic aesthetics.
Different Coating Material For Different Purposes
Dry Film Lubricants – This type of coating contains ingredients like molybdenum disulfide and Teflon that help to add surface lubricity while protecting against friction. This type of coating is most commonly used on piston skirts, engine bearings, intake & exhaust valve stems.
Oil Shedding Coats – This coating contains high levels of PTEE also known as Teflon as well as similar polymers that are great at shedding or repelling oil. This type of coating can improve cooling and oil return to the pump.
Thermal Barriers – These coatings contain high levels of ceramic ingredients and are very poor heat conductors, but are great at reflecting heat. This coating is generally used on the inside/outside of an exhaust manifold.
Thermal Dispersants – This type of coating is great for the inside/outside of oil pans and can also transfer heat more efficiently than bare or painted metal
Generally, if you are looking to have any of your vehicle’s engine parts coated with any type of substance make sure to do your research first and that you utilize the services of a reputable metal coating & finishing professional. It is also a great idea to speak with a trusted mechanic about the coating you are looking into. A certified and honest mechanic can lend great insight and knowledge into what will be best for your vehicle engine’s overall health & longevity.