Casidiam?

[jtanguay]

I've never heard of this stuff before, but sounds very promising... (and expensive  :cry: )

http://www.casidiam.com/

[larry104]

NASA physicists Mike Mirtich, Bruce Banks,  and Frank DiFillipo developed diamond-like thin films about 20 years ago. I was a student working there at the time. There is also a clear variant of the coating that can be applied to optics.  Several companies have been spun off as a result of their work. No personal experience with DLTF coatings, but I've seen some of the tribology data and heard they work.

[jtanguay]

20 years ago? Wow...

I e-mailed the company and asked them about piston skirt coating.  I wonder how much better it would be than moly coating

[larry104]

I'm not impressed with moly or ceramic coatings.  I had ceramic applied to the piston heads and moly to the skirts on a stroker motorcycle engine. At roughly 10K miles, I need to rebore the cylinders.  Not good. At about 5K, I had a roller rocker arm break (factory defective),  and had the cylinder off. The skirt coating had already worn through by that point.  It's less than a 0.001 in. thick.  The ceramic coating was also gone.  If it was there, I couldn't see it after having cleaned the piston by soaking it in kerosene.  Again, no personal experience with the diamond coatings, but I wouldn't waste money on moly.

[jtanguay]

I'm not impressed with moly or ceramic coatings.  I had ceramic applied to the piston heads and moly to the skirts on a stroker motorcycle engine. At roughly 10K miles, I need to rebore the cylinders.  Not good. At about 5K, I had a roller rocker arm break (factory defective),  and had the cylinder off. The skirt coating had already worn through by that point.  It's less than a 0.001 in. thick.  The ceramic coating was also gone.  If it was there, I couldn't see it after having cleaned the piston by soaking it in kerosene.  Again, no personal experience with the diamond coatings, but I wouldn't waste money on moly.

Thanks larry, you've given me some insight