Quote:
Originally Posted by JFP in PA
I still don't see any evidence of the cases and cylinder heads being sent out for proper cleaning; where they? If they were not, all the galley passages where probably still full of metal grit............
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The oil filter did its job, there wasn't much metal in it in any event, the car ran for a 1 block after the IMS let loose. Enough to get the previous owner home. Areas in order of highest contamination were:
1) Inside the IMS tube
2) Oil pan
3) Return galleys from the head - it appeared the cam chains were transporting bearing material into the head area and it was returning to the oil pan. And this last sentence is an analysis of early failure that some folks might keep close to the vest, here you get it for free.
4) Oil filter - a smattering of chips on the filter element, maybe 2 dozen.
I did not find any metal debris on the high pressure side of the system and I looked hard and long. I used spray cans (mainly brake cleaner) feeding the little red tubes into the oil passages to chase everything out. followed with my old favorite WD 40
The heads were inspected visually and with rare earth magnets both before and after they went out to be rebuilt. Nothing was found.
On rare earth magnets - pulling the chips off the aluminum with them from about 3 inches away looks like sawdust getting sucked up with a shop vac, and that is through the oil film. It's kind of amazing to watch. I went over the case multiple times during cleaning over the course of several days until nothing was attracted to the magnet.
