Thermal Coatings

[GTR-32U]

Ok so I have been reading up a little on thermal coatings for engines and I really was only aware of certain things being coated eg manifolds in HPC etc. But some really practical things I am seeing is coatings of internals for improved performance. I have had a look at a few sites regarding coating pistons,Heads,valves even valve springs, Supposedly they trap far more heat into the combustion process and also have a higher detonation threshold due to reduced hot spots. I must admit it all looks great..Just wondering if anybody on here had had any experiences with it they wish to discuss

[Beer Baron]

have had pistons ceramic coated before and with moly coated skirts. and bought HKS step 3 pistons before which have a ceramic crown, moly skirt and some kind of titanium coating on the ring lands. I don't really know what if any difference it made but the theory seems sound.

[mickey]

supposing there are benefits I guess the next thing is cost and how long do they last. To coat them again would require a full engine rebuild so you'd have to factor that cost in again.

[217/r33]

i have never done this myself, but the logical reason for doing this would be to reduce heat escaping through the head and pistons to reduce temperature.

edit: didn't read the full post, i would also like to hear from anyone who has done this.

-alex

Edited June 2, 2009 by 217/r33