well basicly my evo is ruining stock . no i just change them into original still making noise ..yea its sound from the head engine .usually in the morning when i start my car it doent make any noise but after few minute its back ticking . i notice that during the lifters was remove i saw my cam caps one of it was scrached but i intended to still use it. do i need to replaced them? the machanics told me to overhaul the engine check the internal but then i just though this was just a lifter, what should i do? my fren told me just buy a second hand complete head and just replace it.. am ruining out of ideas. i did bring to a specialist pro shop they said the same its coming out form the top. any one has an idea? thanks