Do L92's need to be surfaced before install?
 

I just purchased a new set of these heads and was wondering if they would need to be decked before install? I just pulled them out of the box and they look good, but I can feel VERY slight lines where they were cut previously from factory. I want to make sure I dont have any sealing problems with them, and was wondering if maybe a re-deck could maybe come out smoother?? I want to keep the chambers as big as possible.. I have a 6.0L with a forged bottom end and a turbo on it and plan on pushing a pretty good amount of boost with these on cometic gaskets (and a coat of copper sealer). Do I need to worry about anything?

We generally surface all the L92 heads we do. A lot of the cores we've recieved have had some sort of nick or scratch in the sealing surface, so we generally surface all of them. Checking them with a straight edge would also help determine if you need to surface them.

Good luck,

Richard:)

ditto, i thought the deck on mine looked like shit too!

With Cometics, I'd definitely surface them. Both sets of L92's on my engine were milled.

Well I dont see any nicks or scratches.. I guess I will just check with a straight edge and go from there. Thanks!

We posted at the same time, lol.. are cometics that touchy?

Does anyone have any opinion on using copper spray gasket sealer on cometics?