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Post by dragsterdick on Jan 19, 2018 21:19:24 GMT
Have any of you guys had it done? Any thoughts?
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Post by c5farmer on Jan 19, 2018 21:33:39 GMT
Never had it done, but there are some pistom manufacturers that offer it on their pistons. I think if it was really great, all the pistons would come that way, especially from the big 3 manufacturers looking for a little extra gas mileage and dependability. Piston scratches on cylinder walls usually come from running without an air ceaner.
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Post by Fugly on Jan 20, 2018 0:01:53 GMT
Depending on what your goal is ,,coatings can be very beneficial- skirt coatings can even build up a piston that is a little loose....
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Post by Fugly on Jan 20, 2018 0:03:00 GMT
Scratches can come from dirt, tight piston to wall, sharp edges on skirt or rings, and of course dirt
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Post by dragsterdick on Jan 20, 2018 1:05:40 GMT
Thanks Damon! I called Diamond today and they told me that they said my piston to cylinder clearance was a little too tight and that is where the scratches on the skirts was from ! So he said just hone it and coat the skirts if it needs it? Less work and cost of new pistons.
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Post by Fugly on Jan 20, 2018 1:46:24 GMT
Hone it....check the bottom edge of the skirt for sharp edges and smooth them with a stone if need be
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Post by rebelrouser on Jan 20, 2018 19:07:54 GMT
lots of differant coatings for pistons, some for wear, some for thermal insulation. I know that the coatings used for thermal insulation will raise combustion temperatures, so you may need to retard timing a couple degrees, compared to non coated. Had a couple guys with nitrous engines found it out the hard way. I have used many of the pistons with coatings on the skrits for wear resistance, and they seem to work OK, they were stock or mild type engines. Sealed Power puts those coatings on a lot of their replacement pistons. www.hotrod.com/articles/hrdp-0612-engine-coatings/ decent article with some dyno results.
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