I can't help it, I have been drawn to the dark side
High tech coatings. These are from techline. This is my first experiment with coatings, and I am in a state of mind that they are good. I am sure there is lots of room for criticism, and I encourage it. These are Wiesco forged pistons going in a 455 for my car. I have used a flapper wheel to dull all ridges in the piston top.
All work is done with gloves to eliminate transfer of oils from hands to project.
techline_pistons-1.png
In this photo, the pistons have been heated to 350+ to burn off oils. The ring grooves are then masked. The inside of the piston and the top is then burnished with aluminum oxide (or garnet) at 30-35lbs. pressure. You can see an old piston pin is used to protect the pin bosses. The pistons are then rinsed/washed with acetone as a final step before coating.
techline_pistons-2.png
Here you can see the TLTD heat dispersant applied to the underside using a couple of old pins to protect the bosses.
techline_pistons-3.png
And finally the CBX coating on top of the pistons.
Next comes curing in the oven, and then fitting them in the block
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