Stock PCV. It might be related to the oil consumption, but there is for sure a windage problem. My lifters clatter like crazy if I go above 6000 RPM during or right after a high G corner. Unless my lifters are junk, the clatter is a sign of air mixed into the oil.ericjon262 wrote: ↑Sat Jun 08, 2024 8:42 am Please post up the results! I'll be very interested to hear them.
It's worth mentioning that oil control applies to more than just the sump, I assume you have a PVC system of some kind? It's possible that the PCV is pulling oil from the valve covers, do you notice any knock retard or knock sensor action at the same time? Being that you're based in California, I'm guessing you're still using a stock ECU/PCM? are you able to adequately log spark advance and knock retard?
Good luck at the track!
Here's some frightening data from this weekend.
X axis engine RPM, Y axis is oil pressure. The color axis is lateral acceleration... green is 0 G's, yellow/red is right turns, and blue is left turns. Dark blue is ~1.4 to 1.5G. This track configuration is CCW hence the small number of yellow/red data points.
What's VERY concerning is the oil pressure dropping to less than 30 psi above 3500 RPM in left corners. Worse, once I get above 6000 RPM after exiting the corner, I feel the engine bog down a bit, blue smoke comes out the exhaust, and the lifters start to clatter. The lifter clatter is a dead giveaway of oil foaming happening. Serious oil windage explains the power loss as well.
I don't know if oil is accumulating in the heads and draining down onto the crank, or just getting whipped up by the crankshaft.