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Ceramic coatings

Practical Engine Building

Discussion and questions related to the course Practical Engine Building


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what is the general consensus on ceramic and other coatings for pistons and other engine parts?

Seems to be all the rage for intake and exhaust parts... irrespective of benefits, I can hardly see anything potentially damaging going on there. However, coatings on the pistons just seems like they might cause particles to chip off over time...

https://youtu.be/7AczhknPIPk

I've used ceramic crown coatings in the past but I've never done a back to back test to validate their usefulness. I can't personally see any downsides and the theory of them is sound. A proper coating that's applied by a professional company shouldn't have any chance of flaking off. As for the pistons, I'd actually recommend you have them coated by the manufacturer if you want to try a coating.