have you ever heard a 22re rod knock before this?at around 15 sec. it sounds just like my old 22re which had the 1st and 2nd rod bearings toasted, it would idle fine but then once the throttle was applied and between that and 2500 rpms under load it would make that sound,kinda sounded like a wood pecker tapping on the side of the motor and it just got progressively worse til it threw a rod.
doesnt sound like an iginition ping pre detonation either but i could be wrong ?
could also be a collision between a valve an the piston head?how is your timing? could have jumped a tooth maybe?
if it still does it with the valve cover not tighten down its deffently not that.
inspect the rockers, cam for flat spots, and if u want to pull the pan and wiggle the rods and see if they move alot just do eliminate it being a rod knock.
