I just bought a set of Je pistons for my 1.8 build, there is no coatings at all on these pistons.I had Wiesco's and they had at-least the side skirts coated. Im starting to wonder is i sould have keept my Wiesco's! I was concerned with valve clearance when using a over sized valve. Does anyone have any good recommendations on coatings? what type? what company? how much should i look to pay? anything else i should have coated while my motor is apart?

 

We had a thread on this exact topic just a little while ago. Search.

As for valve clearance, what head are you using?
(my sigs are turned off so I apologize if its already listed)

 

Tech Line Coatings | Automotive ( Hi-Performance ) Coatings

this is supposed to be the *****.