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Really doesn't look bad enough to account for the amount of particles being generated and ending up in the filter.
At least I found something amiss, not sure if it is "the" reason for the particles.
That does seem very minor. Jake did mention that most scoring is low in the bore and you'd need to look while the piston is tdc. Also, Schnell mentioned the likely culprit being the crankshaft bearings - did you check those?
At this stage, I'm guessing you don't have any of the glittery oil left. If you do, maybe you can take a video of it glittering and post that instead of trying to get a good picture.
A year or two ago, I nearly had a stroke - I was draining my oil pan into a larger container out in the driveway in the sun and noted a terrifying amount of metallic debris. After the urge to soil myself subsided, I went back to the workbench and checked the area where I store the drain pan. More tiny metal particles, leftovers from grinding I was doing at the workbench.
Not suggesting this is OP's situation (although that would be awesome)...but it does not hurt to ensure the drain pan is free of debris prior to each oil change. Leo, I don't suppose you've been grinding near your drain pan recently?
That does seem very minor. Jake did mention that most scoring is low in the bore and you'd need to look while the piston is tdc. Also, Schnell mentioned the likely culprit being the crankshaft bearings - did you check those?
At this stage, I'm guessing you don't have any of the glittery oil left. If you do, maybe you can take a video of it glittering and post that instead of trying to get a good picture.
First page of thread has a link to a video of the oil in the pan.
Gonna have to split the case, look at the back of the bores and the crank bearings as this seems like not enough wear to be the reason for the metal in oil.
A year or two ago, I nearly had a stroke - I was draining my oil pan into a larger container out in the driveway in the sun and noted a terrifying amount of metallic debris. After the urge to soil myself subsided, I went back to the workbench and checked the area where I store the drain pan. More tiny metal particles, leftovers from grinding I was doing at the workbench.
Not suggesting this is OP's situation (although that would be awesome)...but it does not hurt to ensure the drain pan is free of debris prior to each oil change. Leo, I don't suppose you've been grinding near your drain pan recently?
Whatever the origin of the debris, good luck.
Even this far along I would be happy if that was the case but
I thoroughly cleaned the oil pan prior to dumping the filter housing into it. Then took outside in the sun.
Splitting the case could be expensive based on what you replace. Something else to consider is if you had significant bearing damage, you would have ferrous metal in the pan.
As as suggested before, I’d check you scavenger pumps before splitting the case, and maybe the oil pump for debris and scoring.
I could be wrong but I think the bore scoring at the bottom of the bore would be due to piston rocking. If this was the case, then I think you would have ferrous debris from the iron piston skirt coating being rubbed off also.
IMSB was put in with this flange. Not a cause of any problem but Porsche put this part in a brand new car. Casting wasn't complete when they turned it. I doubt its a big deal but I wouldn't think Porsche would do this.
What’s with the edges of 4&5 pistons? How does the mating head look?
They are just sitting that way.
Everything looks pretty good. Crank is spotless.
#1 rod bearing has evidence of small particle damage but really minimal.
01-04-2018, 04:44 PM
