I have an ls/vtec swap in my 97 integra. the head is an obd1 b16 pr3 i beleive. anyways i noticed today when i open the hood while it was running that it sounds like the head is ticking? its not very loud but noticable. is this normal or should i look deeper into it? I though maybe alot of these b series have the sound im hearing but im not sure. any info on this would be appretiated. thanks!