I’d do exactly what Nick did and then talk to the builder about Hard anodizing the rings for extra top ring protection. It’s generally done in boosted applications but extra insurance for detonation. I’ve used Swain Tech for exhaust(headers, manifolds, down pipes, Y pipes) and their White Lightning coating. They have specific products for the coating job . Builders are mixed on coatings for engines; often because of turnaround time. In your case, if the builder is for coatings it sounds like he wants to add the extra protection. Will it provide a speed advantage; probably not to our level of testing but you’ll ensure you have better detonation protection.
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