ceramic coatings for piston tops and the combustion chambers

I've never heard of anyone having to adjust CR as a result of Ceramic Coating pistons, chambers and valves in that properly applied coating is laid down in mils.  

If you're currently on the ragged edge of safe, you may want to CC them prior to coating to be safe.  Are you using a gold or silver based coating & how are you prepping them?

 Using a Camcoat product waterbased that you can airbrush  i have never done this before.. but you have to bake it in a 350 degree  kilm/oven.. i will premeasure as a precaution.  Only a few mils?  I will find out just how much it is with the mice.  I also want it in the exhaust ports of the heads..  Im running a type 4 oil cooler  not a remote cooler with fan so Im doing this to help keep the head temps down on my next experimental engine

Hopefully you didn't have to get it from the UK.  When I say measure, I assumed you'd be CC-ing both the heads and piston.  A Mic won't measure total surface displacement.

As for your coating choice, being water based its going to be the thickest and most difficult.  We used to use this coating a while back.  Its basically the same coating used on headers so it is VERY technical.  I recommend doing some test parts before experimenting with engine parts.  It also has to be polished after coating like below.

Thanks for your help!   I will do the research and try  another product or 2  On a couple  old brigg& strations's  I have.. their a good guini pig for this..

Oh if  you wish to recemend a paticuliar product please do, I need somethin on the piston the head chamber and the exhaust ports. Might require 2 different products

Unfortunately I'm not familiar with any DIY varieties of these coatings.

Well i can tell with great certandy.. there are a lot of them but the best ones are listed on some of the indy car blogs.