Respect to KillerBee for putting their design through this level of scrutiny. I wasn’t convinced it would be a success as it doesn’t address sloshing in the sump at all, however it takes outside the box thinking to drive developments forward and for that they deserve credit. Thanks again to you for doing all this legwork on the behalf of the community.

Even though the results are not ideal from a “I’d like my brz to lubricate properly” POV, this is an excellent process to watch

If I’ve learned anything from this video, it’s that this dude is the next BRZ wizard, mad respect for all the work you’re doing, we need more people like you in the car community!

I really appreciate this, please continue to keep us posted. Any steps we can take to increase the longevity of these engines is critical!

I commend both you and Killer B for taking an academic approach to this issue. A lot of these companies will throw a product on shelves and say "oh, it *should* work!" but Killer B is actually doing GOOD analysis on this. Meanwhile, Subaru and Toyota seem to want to sweep under the rug judging by how their response was to reiterate how the cars are "road cars".

Please do the PLM dual level oil baffle next. I really appreciate the work that you're doing. Glad to see a community building up around this car

This issue is currently holding me back from purchasing a BRZ. The whole point of these cars is to be a fun little track car. Might have to keep my evo for longer

I had high hopes for this, but that’s how stuff goes. Back to the drawing board and onto the next idea.

As a former WRX owner who went through two EJs due to similar oiling problems (and spun bearings), I really hope you're able to get to the bottom of this and provide a fix for the FRS/BRZ enthusiasts. IMO, it's ridiculous that Subaru didn't learn their lessons from the EJ motors to make the FAs more resistant to this. Anyway, fantastic work; I hope you find a solution soon!

When trying overfill. Do it about 2/3 ~ 1qt. + baffling. That is how we keep these engines intact during insane track days + sprint event of full beating 30 mins.

Really appreciate you doing this and sharing the honest results. Also the thoroughness of your tests really needs to be commended. This is not easy to test and you are doing an outstanding job controlling the variables

As a brz owner, I can’t thank you enough for the work you done. Good job keep it up!

Thank you for all the hard work you are doing for the community. ❤

Thank you for this information and thank you for keeping your cool from all the hate on the GR86 sub reddit.

Killer B is the goats for open testing like this. Tells me they have faith in their final product. I'll grab one when it's finished.

Thank you for your sacrifice.

Big respect for all the effort to bring the community this data and testing. With this systematic approach, it's only a matter of time before a reliable solution is found, so thanks so much.

Loving the scientific research behind your testing. I am grateful for your support to the community of GEN2 owners.

You [and all those helping you with this] are awesome! Thanks for all your time and money toward this car. This is again another reason I love the BRZ/GR86 community. Solution focused people willing to invest in keeping these cars alive and well!

I dont even have one of these cars but im very interesting in watching the process of you guys figuring out the oiling system. Great videos guys!

This issue is the one thing stopping me from purchasing BRZ/86. Thanks for all your work and hopefully a solution is found soon

Good data. I run a GReddy on mine with .75qt overfill. Curious your findings with overfill data. Good stuff bud

Thank you for this. Please keep us posted with all your findings. We appreciate it very much.

This dude just keeps dropping and delivering knowledge like he’s UPS…respect

Awesome video, love the academic approach. Really unfortunate that Subaru isn’t doing anything to address this when there’s clearly an issue. Once you come up with a solution I’m sure many of us will jump on board

The first thing I noticed was the oil pressure was almost 10psi lower. But I'm not too worried about the rtv. Once we apply it ourselves, I'm fairly certain the rtv won't be an issue. What catches my eye is even with the baffle, in some turns, you can see pressure drops earlier than with one on. My question is if these drops are significant enough, can we use the tomei baffle as a foundation and build upon there. Even on gentle curves this baffle proved to be a hindrance. The tomei baffle at least allowed the oil pressure to stay higher for gentle right turns and S turns. It's a thought, but I'm not the expert here.

Thank you for your efforts in finding the cause and a solution

@900BRZ FYI Amazon links in the description are broken. Thanks for the update, I really appreciate the straight forward, sober analysis.

Huge props to Killer B for this one and allowing us to see the data and how products don’t always work as intended. This has me wondering if there was ever any tests like this done for EJ25 engines to see if the oil baffles actually help with oil pressure or not. Great video

Appreciate the follow up and great data analysis!! 👌 Looking forward to more findings

Kudos for putting your engine on the line.

Thank you so much for testing this.

Hey man, even though I saw your post a few days ago i was still waiting for this video to come out. Very interesting to see that the pressure is lower across the board with the prefilter. I really hope that next results will be more promissing. I really think keeping the oil in the pan is the way to go, you can see that as soon as the car is turning to the right the pressure drops, which means that the oil is escaping the pan and not only being stuck at the top of the engine (at this temperature the oil should have no issue going back to the pan). I cannot wait for further testing ! Thanks for the quality content man 👍

I don’t even have a BRZ but these videos have been very good watches and I’m excited to see the next videos

As track build GR86 owner, I really appreciated your persistence on trying to solve oil pressure issue.

Subaru rally mechanic here: I have seen countless EJ/FA/FB/EZ engine failures due to oiling issues in both Street and race prep form. The engines that survived were using dry sump systems, its as easy as that. I agree we would like to know the whys of the oil system failure but for anyone wanting to avoid a failure I would point to the world of racing using dry sump systems. At this point GMC/chev have made one of the best semi dey sump systems available. Compact and inexpensive. Im not sure why subaru did not adopt this style of system for its new generation of engines. It would have saved them headache and warranty returns as well as furthered their racing pedigree.

Have you considered starting a gofundme so that we as the community can support your testing? I'm sure lots of people (myself included) would send some money your way to pay for the track days, parts, labor, etc. This is great stuff and we all want more ASAP.

This guy gave the best presentations in school, I bet

This man is doing the lord’s work. Operators

What a legend. If you figure this problem out and you or someone else makes a product to fix it then i'm going to do a more financialy intelligent decision and buy a gr86 instead of a supra

This is getting super interesting

Thanks all for this important research. I hope this leads to a product that can fix the problem.

Our 2023 is still sitting in the garage with 500 miles on it since we got it new. Wife's fun car so doesn't get driven much. Thank you for all this testing and info. Hopefully something comes out soon that fixes this right turn issue.

Thanks for doing the work to gather the data and sharing it with the community.

seriously awesome work. While I don't have a second gen I really appreciate the hard work you're putting into this issue. This is the kind of stuff that makes the twin community so great. With that said I'll bring up what I mentioned on your last video. After looking closer at the shape and layout of the oil pan I still believe the issue is the asymmetrical oil pan and pickup favoring the passenger side. I'm pretty sure the best solution will be a vertical walled baffle that runs front to back to prevent sloshing towards the driver side. That's not to say a horizontal baffle isn't needed either but I think the car needs a system like what IAG builds for WRX's. As for your idea of over filling, I feel like this may alleviate some of the pressure drops but then you might run into more issues with excessive blow by. I'm guessing 1/2 quart might be ok but much beyond that I'd worry assuming you don't have a horizontal baffle to keep the oil from sloshing up into the the upper oil pan / block girdle area. It might be a good idea to see if KillerB will do a horizontal and vertical baffle system combined with a little more oil. Though it would be good to measure the volume of the stock oil pan and keep the oil fill to what will fit in the pan.

Many thanks for these excellent video's, much appreciated. Very interested to see what's next. Greetings from the Nordschleife (awesome track to drive these cars).

I hope that Subaru and Toyota/Gazoo are watching these videos. This is the type of factory testing that should have happened prior to production, but I hope the manufacturers are conducting them now!!! It seems like the marketing guys (especially at Toyota) got a little ahead of the proverbial skis in touting the GR86 as track tested. You have produced well thought out and designed studies controlling for as many confounding factors as possible. I look forward to future installments. In the meantime, I guess I will be sticking to roads that only turn left.

I think it is more on the pre filter rather than the baffle that caused the lower pressure.. The pre filter essentially shifted your oil pick suction higher position due to the perforation holes design compared to stock that is only open on the bottom.. Imagine using a straw filled with holes to drink

This is some real engineering being conducted! Love all the data

Fantastic work! Thank you so much for your valuable time and effort!

Thank you for these updates. Bummer about the killer b baffle but the win here is the systematic way in which you are working toward a solution. It’s the kind of R&D that Subaru should have done in the first place. I am far from knowledgeable on the subject of oiling and flows but if the oil is pooling to the left and not the right, I wonder if a design with strategically located vertical plates could do the job?

This is such a beautiful video. Great info and like no hubris just pure facts and even admittance that the test may not be perfect. I am now subscribing to this channel. Good job my friend

Great video, really well presented testing. Also, thanks for actually writing the English subs for the CC button, because they are accurate, and I can't always be sure just by listening what some of the words are, especially with terminology that is very specific or place names that I'm not familiar with. Usually an English speaking video maker won't bother to write accurate English subs. So in those cases I'll usually try "English auto generated" or "Auto Translate" and after I've had a few laughs about how bad they are I'll probably just turn them off. Because the "auto" thingie can't understand everything that is said any better than I can. So anyway thanks for putting the real words in there in writing.

I just watched a video of Phelps Garage and he had the Tomei baffle plate and saw improvements in oil pressure on long sweeping righthand turns.

Even though I dont own a GR/BRZ, I love how much detail you put into these videos. Hope you find a solution soon, and maybe even compare oil pressure with the EJ platform?

Thank you so much for the data analytical approach. I'm glued to this channel as I own a GR86 and knowledge is power

900 out here doing gods work. Keep us updated on reddit too my man.

Another great video, thanks for putting this data together!

Great video! I feel like it’s a lesson for Toyota hopefully they will do a mass production 3 cylinder GR86 not just test cars.

great video! thanks for doing the hard work. I hope we find a solution soon

Thank you for taking the time to analyze this and work towards a solution! and being unbiased with companies even though they are sending you prototypes. will definitely be following this series.

Can't stress how important your personal work is to the community, and a personal thank you, as I want to get an FA24 (Beyond my Outback Wilderness with it's FA24T as that doesn't really count lol), to replace my STI, and this has been of concern to me.

Thanks for doing Subaru's work for us :)

I really appreciate you doing all of this meticulous testing so maybe one day I can take my GR86 to the track without worring and can just focus on having a good time made it a very easy decision for my sub to the channel!

Thank you for all you are doing. I have a GR86 on order to be a fun weekend car with track and autox in mind. Wanting a fix for this has been something I have been searching for and good to know there are other enthusiast working on some solutions. Subscribed and looking forward to some positive designs and results soon.

Excellent video, thanks. I'm both looking forward to seeing where this goes, and hoping you find a solution soon. Love the approach.

Appreciate this data and your testing result. keep up the good work. many thanks

If it's not a baffle issue, I wonder if the problem is caused by oil pooling up somewhere else in the motor or a restriction causing the oil level in the pan to drop. Excellent video and props to Killer B!

What baffles are you thinking about experimenting with between GReddy, Tomei, and Ansix? From what I've read GReddy is supposed to prevent some oil from going into the timing chain cover (though after your video that seems less of a selling point), the Tomei cannot fit the KillerB pre-strainer, and the Ansix utilizes the flaps which KillerB dislikes in a horizontal configuration. Edit: And thank you so much for providing such a thorough analysis of this issue. It wasn't long ago we all just thought it was excess RTV

I was surprised to see lower oil pressure, since the oil pump seems to be in constant pressure relief above 4500 rpm or so. I would say that the suction pressure of the oil pump must be increased (i.e. more vacuum pressure at the pump inlet) in order to see lower gauge pressure at the outlet when the pump in in pressure relief. High suction vacuum pressure is typically caused by inlet restriction (therefore probably the pre-filter in this case). Ideally suction pressure shouldn't be more than a couple of psi of vacuum. A 10 psi drop in suction pressure would probably be enough to cause cavitation and reduced flow. There's a paper describing this called "Modelling approach on a Gerotor pump working in cavitation conditions". In your last video you show two oil pressure sensors. Which sensor is showing the pressure we seeing on screen and where exactly is it connected?

Brian, thanks to you and your group for the testing and public results. Im most looking forward to seeing results for a vertical baffle design like Kazama or Jun Auto. Subscribed and eagerly awaiting future videos

I really like your data analysis approach. Awesome job, keep it up!

GREAT TESTING !! WE NEED MORE OF THIS KIND OF TESTING !!!

thank yiu again for your fastidious work!

I love the twins, but with all the issue they have and the BRZ MT costing US$45k in my country (converted from PHP) the MX-5 seems to be the better buy. I appreciate the progress and the work you've done for the community though.

Accusump!!!! Problem solved, and every track car should have one!

Doing the lord's work!

awesome test! I look forward to more results!

Can’t wait to see your next test !!!

alot of people are talking about your video. idk who hasn't heard of it!

Hey. Thanks for the thorough work. Much appreciated. I am still in the camp of more fill, w40-50 oil and no cooler to help baseline pressure.

I wanted that I’m in school to be an aircraft mechanic and they use a lot of baffles or “slosh boxes” around their fuel pumps so maybe just copy one of the design of an airplane and maybe it’ll work real well for the oil system. Jets use a dry sump for oil but the piston planes don’t so maybe look into those as well

Would love to see y’all use an oil accumulator setup and see the data logs. I’m sure it’ll be the cheapest and best way to minimize oil starvation without a dry sump conversion.

Anecdotally, I’ve seen multiple WRX STIs fail immediately or shortly after installing the Killer B oil pan and/or oil pickup, including the STI that was filmed blowing up on Gears and Gasoline immediately after installing the Killer B parts. I’m not trying to imply that their parts are specifically harmful, just that they may not be as effective as Killer B claims. I suggest reaching out to multiple professional Subaru Motorsports teams and asking what brands of oil pans and pickups they use in competition, then contacting those brands to discuss their designs and how they compare to Killer B’s. There’s plenty of FA/FB engines surviving in high-level professional racing competition. Find out how those motorsports teams are handling the oiling system in their comp cars.

A good ol' baffle should help... maybe a combination baffle and oil pan spacer to increase oil capacity.

If killer be combined this design with tomei in a way it would actually fix both the elevation and right turn problems

Thanks again. Keep it up.

Keep up the great work! 💪 🔥

Thank you 🙏, keep at it 👍. I'm fairly certain I'm not the only one waiting for your results to determine if a BRZ/86 is a wise long term investment.

Keep up the great work

The work you are doing on this is fantastic! Thank you for bringing a data-driven approach to this issue. Any thoughts on when the next test will be live?

I wonder if an oil pick up extension can be added similar to the pre filter. Maybe even one that redirects the angle. Paired with a different pan. Need to get a camera in the pan while on a sweeper to see if the pickup is getting starved to begin with which is no easy task.

That's absolutely awesome.

keep us posted!

Thank you and keep up the great work:)

Great report. Sad news. But progress sits at the heels of many failures. Hope the standard trapdoor baffle idea works. Of course the extra quart might make all the differences.

Thank you!

This is great work, it’s a bummer you (and KillerB) haven’t found the resolution on the first try but it’s interesting to witness the process. For purposes of looking at potential oil pump starvation I do want to mention, a user (ETM_Shaman) on the ft86club forums tested something similar with the first gen FA20. He drilled a tap into the timing cover and measured pressure right at the oil pump. I’m not sure how much has changed on the FA24, but wonder if that may be a viable data source.

Shame the result is not what we were hoping for. I really would love a tutorial video on how we can make the DIY canbus oil pressure module.

I run 5 and 3/4 quarts of 5w30, 9 track days with 1.3 sustained Gs on catalyst on 200TW RT660s and have not seen any oil foaming, change out every 3 track days (overkill? Maybe) but no baffle and no oil cooler