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Old 04-07-2018, 01:31 PM   #1
gcoffee94ram
 
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Piston Coatings

Who has, and what was used for coating your pistons?
 
Old 04-08-2018, 01:04 AM   #2
ctdthrasher

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Swaintech. Teflon on the sides, ceramic on top. No it still hasn’t run lol
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Old 04-08-2018, 06:34 AM   #3
Highwayman
 
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Considering coating wrist pins too?
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Old 04-08-2018, 06:45 AM   #4
dummins
 
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Running swaintech coatings on my pistons, ceramic top Teflon side, so far so good.
 
Old 04-08-2018, 07:15 AM   #5
cummin get it
 
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You can teflon coat bearings, wrist pins on pistons, and rocker arms, piston skirts, bottom side of head can be ceramic coated (only the firing chamber around valves) and top of pistons ceramic coated. If your trying to make stock pistons as good as you can get, cryo treat them as well.
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Old 04-08-2018, 08:25 AM   #6
Burningtire
 
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Did my pistons with techline products. Piston tops got cbx ceramic coating, sides skirts got a high build then a dry film lubricant. Click the image to open in full size.

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Old 04-08-2018, 09:05 AM   #7
WUnderwood
 
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PolyDyn in Houston did mine.
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Old 04-08-2018, 11:07 AM   #8
mfsuper90
 
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I’ve heard nothing but good things about microblue for bearing surfaces and/or anything with friction.
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Old 04-08-2018, 11:23 AM   #9
Blueboy

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Swain Tech for pistons.
DLC for Wrist Pins.
 
Old 04-08-2018, 11:36 AM   #10
12valve95
 
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Heard a lot of good things about polydyn. I plan to use them on mine. There website pricing sheet is a bit weird for automotive diesel.

If you need I can PM you the email with specific prices they sent me.
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Old 04-08-2018, 01:15 PM   #11
Pudge
 
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Ceramic on top, and hard anodize the piston. Those are the only things that last from my experience. I've never had a skirt coating that didn't come off. Calico Coatings in Denver, NC do excellent work, prices and turn around time

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Old 04-09-2018, 07:32 PM   #12
gcoffee94ram
 
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Are there true benifits to coating tops of pistons? How many people have actually melted a piston or experienced piston failure that could have been prevented with coatings?
 
Old 04-09-2018, 08:54 PM   #13
12valve95
 
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Quote:
Originally Posted by gcoffee94ram View Post
Are there true benifits to coating tops of pistons? How many people have actually melted a piston or experienced piston failure that could have been prevented with coatings?
From what I understand it is more about getting a better more complete combustion on the tops.

The skirt coatings are about longevity.
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Old 04-10-2018, 09:18 AM   #14
biggy238
 
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Heat rejection @ duty cycle. The (crown) coating lowers heat absorption for the piston, allowing it to maintain duty cycle longer without the crown deforming.

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Old 04-10-2018, 09:19 AM   #15
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Quote:
Originally Posted by Pudge View Post
Ceramic on top, and hard anodize the piston. Those are the only things that last from my experience. I've never had a skirt coating that didn't come off. Calico Coatings in Denver, NC do excellent work, prices and turn around time

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Average, how long did they last in your experience?

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Old 04-10-2018, 06:11 PM   #16
Pudge
 
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I always have pulled the motor down to checking bearings and rings at the end of every season, even if there's no signs of fatigue. My seasons average 30-50 hooks. The skirt coatings never made it a whole season, they had usually come off right under the bottom ring land and in random spots along the skirt. PTW was adequate for application.

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Old 04-10-2018, 06:40 PM   #17
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Quote:
Originally Posted by gcoffee94ram View Post
Are there true benifits to coating tops of pistons? How many people have actually melted a piston or experienced piston failure that could have been prevented with coatings?
I’ve seen pistons melt that were coated
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Old 05-06-2018, 01:55 PM   #18
gcoffee94ram
 
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Had the tops costed at Polydyn in TX.
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Old 05-08-2018, 10:19 AM   #19
Broaner
 
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Contagious Diesel in Mayville WI did mine. Not sure which brand he uses. They looked perfect and I think it was about $200. A shame to put them in their holes.

Click the image to open in full size.
Click the image to open in full size.
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Old 05-08-2018, 11:33 AM   #20
shortbusdriver
 
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Quote:
Originally Posted by Broaner View Post
Contagious Diesel in Mayville WI did mine. Not sure which brand he uses. They looked perfect and I think it was about $200. A shame to put them in their holes.
Thank you for the shout out but just to let everyone know I am no longer coating pistons. The preparation and time that I put into these to make them turn out decent is a pain in the butt and I do not enjoy doing them. So I have decided to turn piston coating work down from now on except for my personal stuff.
 
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