Ok, i need a bit of help figuring out what exactly happened with my motor.
I got a rebuilt motor to put in the car after an accident.
At the end of the break in (1000 miles nothing over 4000 RPM or 40% throttle) there was an issue with the passenger side cat getting clogged. My guess this had been happening for quite some time as when I took the cat off it was basically powder. The symptoms were that the temp got a bit hot on the highway (never past 95ish), and cooled down as soon as I pulled off. After a couple stops (checked coolant level/cap, verified fans were kicking on etc) the car had basically no power at all. So I got it home and gutted both cats. all was well again.
I was at the end of my 1000 mile break in, so I changed the oil and took it around the block... finally able to get it into boost. It pulled smooth and strong.
The next time I drove it was a warm day, but the temp stayed perfectly fine, but when I pulled of the highway at my destination the oil pressure light began to flicker, and I noticed a bit of smoke from the tailpipes.
I got it home and noticed the passenger side turbo had what looked like tar coming out of the cartridge, so I swapped it out with the one off the old motor, thinking that the heat from the melted cat had damaged it. No more smoking.
Now on to the oil pressure issue. I installed a gauge so I can see what the oil pressure ACTUALLY was doing. Upon start up it would be fine (40 psi), and would come down slowly as it warmed up to about 15psi. after idling for a long time (30-45 minutes) it would finally drop enough to trip the light, which comes on about 5 psi. Now if i started it up cold, and drove it (even easily) the oil pressure would drop to 5 or lower the first or second time I let it back down to idle.. even if i had only driven a block or 2.
I drianed the oil to put in a bit thicker mixture, and noticed a decent amount of metal (copper and aluminum) in the oil. I put in thicker oil and started it up and it acted exactly the same. I ran it for about 20 minutes until the oil pressure got to around 15 and drained the oil again.. it looked worse than the last oil.
So the motor is out and I pulled the pan off today, and here is what I found on the pickup. It looks and feels like some sort of film... slightly transparent, and brown in color. Along with some slivers of what looks like copper, and aluminum.
I pulled the oil pressure relief valve out found some pretty serious gouges on the piston.
Thanks in advance.