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Oil consumption under high G corners on track

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Old Sep 14, 2023 | 05:41 PM
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obsidian_G
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From: ontario
Default Oil consumption under high G corners on track

Hi guys, this is my first post on my350z, I usually post on G35 Driver, but I think there is more people here with track knowledge.

I got a 2005 G35 coupe 6mt with the DE rev up. I have been tracking the car for the past 3 years, and have upgraded to some Pirelli Trofeo R semi-slicks this year.
Last track day I experienced extreme blow by after hard cornering on the track. The car seems to have oil getting past the pcv valve and my catch can and going straight into the combustion chamber. It seems to happen after turn 6 at my local track (TMP) right after I get on WOT. I'll post a pic of the track layout.

TMP track map

I’ve been running the Trofeo R’s for this entire season, and the only thing I changed before the track day was my front brake pads. But they were changed to a less aggressive compound, so I don't think it's that. I also don't think it has anything to do with the coolant because it did not burn a drop at the track. I also road-tripped the car 3 hours away after the track day and the coolant level did not move. It only seems to puff out smoke at the track. I did multiple pulls to redline on the street and it did not smoke at all.

I believe the car is pulling too many g’s causing the oil to get past the pcv and into the intake manifold. I am using a cheap Amazon catch can on the pcv side of the engine, but it did not seem to catch any oil last track day. However, the car did burn a noticeable amount of oil on track (more than usual that is).

has anyone experienced this issue on track? Are the VQ's known to have this blow by problem like the s2k when pulling high lateral G forces?

Thanks in advance!
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