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Engine Specific Info and Questions => IDI Engine => Topic started by: jtanguay on August 28, 2006, 09:44:44 am

Title: Casidiam?
Post by: jtanguay on August 28, 2006, 09:44:44 am

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

http://www.casidiam.com/

Title: Casidiam?
Post by: larry104 on August 28, 2006, 10:04:52 am

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.

Title: Casidiam?
Post by: jtanguay on August 28, 2006, 10:49:56 am

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 :)

Title: Casidiam?
Post by: larry104 on August 28, 2006, 11:19:31 am

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.

Title: Casidiam?
Post by: jtanguay on August 28, 2006, 12:52:17 pm

Quote from: 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.

Thanks larry, you've given me some insight :)