Last night i went out sliding.. Just hit a couple round-abouts and things; everything was fine. So then we went back to my buddies house and rode out to a meet everything was fine.. drove probably 25 minutes back toward my house and about a mile from my house i heard a tapping noise.. so i baby it home and pop the hood and there was a tapping noise comming from the head... Ive searched and called everywhere but idk what it can be.. stuck lifter? timing belt jump a tooth? The noise doesnt get louder as rpms increase but it does get faster in relation to the rpms.. help this car is my means of transportation