Oil filter examination

[AdamBorz]

So, the other day as I was pulling up to my garage, I thought I heard an engine knock… just at idle. Now, my driveway is rough stone, and I had just heard the tail pipe scrape a bit. I shut off engine, popped hood, and restarted. Nothing. Ran normal…

So I wasn’t sure if I had kicked up something (stick whatever as my garage is under construction and there is stuff laying around).

I pulled into garage, everything sounded normal.

Still, that bearing noise (almost like rod knock) bothers me.

So, I changed oil, and cut open the oil filter. First time I ever did this, there are some small shiny bits…. I had ran this oil on the engine dyno and we beat the snot out of it, tested how high to rev for peak power; didn’t do much past 7000 on forged rotating assembly as power fell off above that.

Anyhow, can’t duplicate the noise, but attached is the video I took. I cut open with snips… the pleated filter kinda glimmers and here is video of bottom of filter. Okay won’t let me post video, but here is the worst of it.

So question is, is any “stuff” in filter normal, and is it normal for bearing noise to stop if there is a spun main or??? I’ve only ever experienced this once on a stroked forged internals 496 supercharged engine in a boat. Once it had rod knock it didn’t stop knocking…

 

[Kev555]

bits are miniscule, check your camshaft rollers

 

[AdamBorz]

Here is the video on YouTube. Oil isn’t all that old, a little shiny but after I rotated it a bit I saw that clump that is what is pictured. I didn’t use a saw to open, just metal snips so I doubt I got something in it…

 

[Juice]

Send oil off for anslysis.

 

[AdamBorz]

Send oil off for anslysis.

I drained oil into a container with other oil. I still have that little bit in the filter. That is a good idea.

 

[AdamBorz]

On the boat engine I referenced earlier, when I dropped the oil pan there were chucks of con-rod bearings. I’ve never seen anything this fine. Hence I’m asking is any shiny bits normal or okay or??

I’m actually worried about driving it now, don’t want to make it worse if there is a problem.

I guess checking the cams out wouldn’t be that hard… but the fact the bearing noise went away has me scratching my head.

 

[AdamBorz]

Video of engine running after I changed oil. Slight chirp is the belt tensioner dancing…