On the pistons??? Worth it???

 

I guess it would depend on what your expectations are. Any way, the December 2006 issue of Hot Rod has some dyno tests of various engine coatings. Haven't read it yet though. Also, do a search. Engine coatings is a subject that was recently done in the Advanced Tech section, as I recall.

 

big supercharger, maybe a twin turbo setup.. just don't want any problems.. I got a big engine, dont' want any problems.. looking for longevity.. LOL.. I should say I'm hoping for longevity

 

I'd worry more about selecting the right high-quality engine parts. Thats what is really gonna help longevity. As far as coatings go, it seems the most beneficial coatings are the "lubricity" coatings.

 

The article in Hot Rod magazine that was mentioned showed what coatings were worth as far as dyno numbers were concerned. It also touched on many other things. The one thing that was said was that coating the exhaust ports and combustion chambers of cylinder heads (in this case aluminum) was a very good idea but that also coating the pistons could create problems with heat transfer( not going through the piston and eventually to the oil) which could in the end lead to more problems with detonation. Some piston companies use specific tempering and the heating process when the coating is applied which could interfere with the integrity of the piston. For this reason I opted to coat only the chambers and exhaust ports. Bearings are also a good idea but are more of an insurance policy if you were to suddenly have no oil pressure.