coated pistons
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coated pistons

  1. #1
    Senior Member APOLLO's Avatar
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    Default coated pistons

    What Are The Pro's And Con's With Coated Pistons? What Do You Gain Or Don't Gain?

    Thanks In Advanced Troy

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    gn7
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    tops help retain heat in the chamber where it can help with power, helps keep heat off the pin if you are using a high placed pin, helps reduce the heat the alumn sees, specially during detenation, helps spred the heat across the entire surface instead of concentrated in local areas, etc. Basically every thing below the coating runs cooler. The skirt dry film can reduce wear but mainly safe gards against scuffing, specially on 2618 alloy pistons. There is zero disadvantage to coated pistons other than $$$$$



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    Thank you very much

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    They will also provide protection from metal shavings/debris. Thanks to my pistons being coated, I didnt have to buy new ones. The coating took the abuse.

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    Senior Member APOLLO's Avatar
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    I heard of it before but never thought It would benefit me. I just got my pistons today and there was a brochure on piston coatings. That is why I brought it up. Now I'm thinking of sending them back to get coated.

    Thanks for the in put guy's

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    Senior Member Jim W's Avatar
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    I went with coated piston skirts and coated main and rod bearings.
    Swain technologies, only because they are close to me (20 miles) and have been doing it since day one.

    Jim
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    Cantard 71hallett's Avatar
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    Quote Originally Posted by Jim W View Post
    I went with coated piston skirts and coated main and rod bearings.
    Swain technologies, only because they are close to me (20 miles) and have been doing it since day one.

    Jim
    What do they charge to do pistons Jim...might send you a set.
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

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    Senior Member APOLLO's Avatar
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    What kind of coating is it and is it the same that gets used on the rod and main bearings?

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    Just another Wannabe Wannabe's Avatar
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    No- bearings get different coatings. There are so many different types of coatings, it is crazy.
    Every time you coat an engine part that reduces heat absorption, you require less fuel to make a perfect burn. (Enter the discussions in NASCAR about different teams with different fuel economies.)

  12. #10
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    Have never seen a performance advantage in any piston coating, and have seen them tested under very controlled conditions.
    There may be some longevity benefits from thermal coating the tops, and some combo's won't live without anodized top ring lands, but skirt coating is a waste of time. IMO

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    Senior Member Jim W's Avatar
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    Quote Originally Posted by 71hallett View Post
    What do they charge to do pistons Jim...might send you a set.

    Paul,

    the invoice from my machinist says $240.00 skirts only.

    He may of marked it up a bit for his time etc.

    Jim
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    Senior Member Jim W's Avatar
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    Quote Originally Posted by Warp Speed View Post
    Have never seen a performance advantage in any piston coating, and have seen them tested under very controlled conditions.
    There may be some longevity benefits from thermal coating the tops, and some combo's won't live without anodized top ring lands, but skirt coating is a waste of time. IMO
    Skirt coating may be a waste of time for performance but how about longevity when the piston needs a little help from being too tight for a unforseen reason?

    Jim
    GN7
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    Got it wet on 6/15/10-------->finally......



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  15. #13
    steelcomp was here
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    Quote Originally Posted by Jim W View Post
    Skirt coating may be a waste of time for performance but how about longevity when the piston needs a little help from being too tight for a unforseen reason?

    Jim
    Just curious what "unforseen reason" that would be?
    If God is your co-pilot, change seats!
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    Cantard 71hallett's Avatar
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    Quote Originally Posted by steelcomp View Post
    Just curious what "unforseen reason" that would be?
    The unforeseen one.

    Did you hear anything back? Pm me if you did I guess.
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

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