I work in the 4-stroke small engine business. I see a lot of Chrome, Iron and Nickle plated pistons. It adds life and improves power in the engine. I am wondering if it is the same in 2-stroke engine. And if it is worth doing to a snowmobile.
Stay away from hpcoatings for pistons as they have a bad rep. We've also had engine cylinder head runners and domes coated to keep the heat in and moving. But coating the inside of sled pipes doesn't make a diff they've found. A cryo'd and coated piston will take tons of abuse saving our buttsfrom lean condition.
Chrome cylinders have been around for awhile, they used to be taboo because you couldn't bore them you had to re-sleeve, now I think that is pretty much the norm, they will take more of a beating if you do have a melt down compared to an uncoated cylinder.
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