Combo is a 540ci tall deck bowtie block, Eagle crank and rods and JE domed pistons. Chinese aluminum heads that have been gone through locally. Comp solid flat tappet cam and lifters and Crane stud mount rockers (not turning it much over 6500). King bearings throughout. Whole motor was just freshened up due to a valve spring failure.
This is only the second oil change on it, first was the break-in oil change and that filter was dirtier for sure but nothing to be alarmed about. This oil and filter has maybe 20 miles and a handful of 3/4 throttle pulls on it, didn't suspect anything just wanted to make sure all was still well with it. Oil pressure has always been excellent, around 50PSI warm idle and well over 60PSI when I get into it. Have been running Valvoline VR1 20W50 high zinc oil at recommendation of engine builder.
This is quite literally the only piece of metal I found in the oil, every other pleat looked pristine. Oil in the filter had barely any metal in it at all, certainly not enough for my phone camera to pick up. Oil in the pan looked pristine and there was no metal on the drain plug. Piece is about the size of a fingernail, doesn't really seem big enough to be part of a lifter but don't know for sure. I have not gotten the chance to check valve lash since the last time it ran but I spent a considerable amount of time listening to the valvetrain and couldn't hear any inconsistencies in the sewing machine sound.
Going to call engine builder to get his thoughts, but in the meantime any guesses from the bullet?
This is only the second oil change on it, first was the break-in oil change and that filter was dirtier for sure but nothing to be alarmed about. This oil and filter has maybe 20 miles and a handful of 3/4 throttle pulls on it, didn't suspect anything just wanted to make sure all was still well with it. Oil pressure has always been excellent, around 50PSI warm idle and well over 60PSI when I get into it. Have been running Valvoline VR1 20W50 high zinc oil at recommendation of engine builder.
This is quite literally the only piece of metal I found in the oil, every other pleat looked pristine. Oil in the filter had barely any metal in it at all, certainly not enough for my phone camera to pick up. Oil in the pan looked pristine and there was no metal on the drain plug. Piece is about the size of a fingernail, doesn't really seem big enough to be part of a lifter but don't know for sure. I have not gotten the chance to check valve lash since the last time it ran but I spent a considerable amount of time listening to the valvetrain and couldn't hear any inconsistencies in the sewing machine sound.
Going to call engine builder to get his thoughts, but in the meantime any guesses from the bullet?