Frequently Asked Questions
SQI Performance Coating
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Engine & Ceramic Coating FAQPowder Coating FAQ

Engine & Ceramic Coatings FAQ

What parts should be treated?
Any part subject to friction, loss of lubricating film, heat damage, corrosion or abrasion. In addition to the friction issue, enhanced appearance is achieved for parts such as headers, brackets, and suspension pieces.

How much power will I gain?
This will depend upon many factors that which varies from application to application. Testing has shown significant power increases on a dynamometer. In addition certain changes can be made in such areas as tolerances, timing, jetting and the lubricants used, that will increase torque and H.P. and are only possible through the use of coatings. Horsepower gains of up to 40HP have been measured in independent dynamometer testing.

How long will the coatings last?
Depending on the coating, part life increases from two (2) to ten (10) times what is normally seen. The dry film lubricants may burnish until they are no longer visible, however, the active materials are bonded into the pores of the part and continue to provide protection. The thermal corrosion barrier coatings may provide corrosion protection for (10) years or longer.

Will I see a temperature change?
Parts will run cooler. Engine oil and water temperatures have shown a reduction. On headers the radiated heat will be substantially reduced leading to lower underhood temperatures and less heat absorption by nearby parts and surfaces.

What about clearances?
The dry film lubricants will burnish as they run until they are no longer visible. They are applied at thicknesses ranging from .0005" to .0015". However, before assembly the coating may be burnished back to less than .0002" with gentle buffing using "Scotch-Brite™" or similar material. NO CHANGES need to be made in clearances due to the use of these coatings, though in many instances because of the reduced part temperature and increased lubrication tighter clearances may be run.

What about machining, balancing?
All machine work should be done first.

What tuning changes will be necessary?
The changes necessary will vary from engine to engine and depend on how many parts are coated. In general coating the combustion chamber surfaces will allow you to run less initial timing with no loss of power (usually a gain will occur). You may also be able to run significantly less fuel, due to the more efficient oxidation that occurs with the coated parts. There are cases where the opposite applies.

Can used headers and exhaust components be coated? Do I get the same warranty?
Yes. Used parts need to be treated to remove rust and contamination. Many companies charge for this. Others have this cost already built in to their price. SQI Coating does not charge for this service. We offer the same warranty on new or used parts.

How do I send my parts in?
UPS is our preferred shipper, their rates are very reasonable and they gladly handle larger packages. Please package your items so they do not be damaged in shipment. We will repackage them to protect not only the part, but also the surface coating they have received. We will gladly send you an email confirming the receipt of your parts after we receive them.

What is the turn-around time?
Exhaust components are usually four to six business days. In wintertime when the workload is heavier it can take as many as seven business days. We can tell you when you contact us what the turn-around time would be if parts are shipped immediately. Turn around time for engine components is three to four business days, with express one-day service available.