hello i have a 2000 civic Si and a LS/Vtec engine.
my question is that i am running the Si head and i have
ferra valves and zex valve springs and retainers.
i have had this set-up for almost a year and now i am having a
problem. when the engine is at an idle it sounds sine but
as soon as i rev it a little or start to go i have this sound like the valves are smacking. i have check the adjusting screw on the valves and nothing was loose. i was wondering what the problem might me.
i also check the timing belt and that was a little loose but i fixed it and the sound is still there. please help

-chris martin
gr8ddy1@aol.com