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Old 04-16-2024, 03:39 AM   #10
grippgoat
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Join Date: Mar 2023
Drives: 2023 BRZ, 2018 Golf R 6MT
Location: WA
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After the previous track day, where I was fighting a loose car, I took off the 19mm rear sway and put the stock 14mm back on. I also lowered my rear spring perches 5mm, because the car had over 10mm rake (measured at the jack points), which is too much from all the reputable sources I can remember.

Hit the Ridge with Hooked on Driving on april 13th, and the car was incredibly much better. I was able to imrpove my personal best to 1:55.9. I think the car is a bit pushy, and I'm going to try more camber (especially front, which is only about 3.2) to see if that helps. I still have some work to do on the driver mod. And I think I've got another day or two of tread left on the SC3Rs. So hoping to find a couple more seconds at least.

In the previous vid, when I wasn't going as fast, the oil pressure drops were present but honestly not concerning. They were all a fraction of a second at part throttle and lower RPMs. Going faster makes them way, way worse. There's an overlay in the video, but I can share RaceChrono data if anyone wants it. I wonder if Varus would send me a prototype pan and baffle for testing. I want some of the 900 BRZ Oil pressure.

I also took an oil sample when I changed oil a couple weeks ago, but haven't sent it out for analysis yet. I should do that.

Track vid below. Skip the first half if you don't care to see what happens when you go out with 26 psi front and 28 psi rear to see how low is too low. But once they got up to about 31 front and 30 rear, the car started hooking up better than it ever has, and I was able to just keep pushing harder and driving the lap time down. I also had my front left compression damping set two clicks higher than I thought, which might be why I went tokyo drift in turn 12 when I was on pace for a 1:55.9. Managed to keep it clean two laps later. Also, there was a drift event in the super tight left-hand turn 11 that involved an add clunk / rattle that I didn't notice when I was on track, but it's pretty loud in the vid. No idea what it was. I don't think I clipped a curb or anything. Maybe a really sloppy downshift? :shrug:

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