Did We Fix Subaru’s Engine Flaw For Just $500? 

Same. So… Miata?

Lucky you. The news about the oil pressure drop came out 2 days after I purchased the car 😢

From everything I have seen this is working wonders. If you're still feeling iffy check out the use with drysump. Apparently it comes pretty close to negating the pressure drops. Some people are saying it's overkill. Edit: I have a gr86 but this is not from personal experience just from everything I've seen and read

@@actseight9358 Dry Sump is needed if you're in the WRC or GT300 etc. Otherwise it's waste of money. They cost a fortune and are only for legit racing applications. No one in the comments needs one. Not even the GR86 Cup uses them.

The 2023 model fixed the issue.

Well, I don't know wehere do you live but here in Europe the Subaru engines are legendary due to their ability to seize themselves up in no time. Especially the 2,5 litres in STI's and 2 litre diesels. So it is no surprise for me that they botched up another engine as well.

I am actually surprised this issue hasnt been resolved. People are not thinking physics. If it was just oil pickup, problem would have been solved long ago. The issue in my curiosity in the situation points me to the timing cover. We must think physics. Pump still puts out same. It is a linear pressure drop, so not sucking air. The problem I see? The oil pumps to filter housing on extreme left side. On a higher G right turn? The length of the feed to crank and onto right side of engine has to fight that hydraulic head which coincides with where oil pressure sensors are. Path of least resistance. Oil primarily will follow the left channel return. Want to fix the issue? Need either flow restrictors so fluid needs to keep to the right bank which will still have a head pressure loss or a new timing cover to centralize the oil filter. Third option is if the cover is designed like a manifold so all oil flow out of filter housing goes to a central branch, and then off to left and right ensuring bottom end always has the priority path vs left head priority. Rest is stopgaps to compensate, but doesnt solve the issue.

A big part of it is the engine layout. In a Boxster oil is going side to side, instead of just up and down like a Inline 4. Porsche solved this problem by adding scavenging pumps and pickups that take the excess oil back into the system. That being said Honda and Mazda have their own issues. ND1 trans blows up on the track. Honda still hasn't fixed the overheating issue with the 2.0T, that can cause it to melt internals when pushing hard on the track. GR Corolla has overheating issues too. And you can probably actually blame Toyota, because it was the guy that developed the MKV Supra that was in charge of both Gens of the 86/BRZ. Kind of funny too how when GR races the 86, they put the turbo 3 cyl from the GR Yaris in it. Lmo They don't even want to use the Boxster engine they insisted it had to have.

What's next for your car?

For this reason I wouldnt even bother dropping the oil pan.

@@Imprezalove same here. I was debating when news was first released, but Im not touching anything engine/drivetrain related until warranty is up

@@FujiboHeavy The problem with that is you may scuff a bearing, it degrades just slow enough that after your warranty is up it develops a knock and then fails. I understand your logic, but as a research and development engineer for internal combustion engines that seems like a bad idea. You could use their strategy and prevent oil starving thus maintain bearing health and avoid possible large costs of repair in the future.

@@turbobros_online1561 agreed. I would personally use this method for peace of mind if it was dedicated track car. But I would say my view is more for the daily driver but maybe 1-2 track days a year. I see what you mean long term. Who knows, I may end up doing it once I understand the system more. Especially if its something you can turn on/off

@@turbobros_online1561 - UOA tests should be able to pick up any additional wear and tear, for extra peace of mind.

they use a larger oil pan with a custom header if I remember correctly. I don't believe the public has access to the larger oil pan yet

​@@nootologyi've also heard about a 1 liter oil overfill to have a higher oil lever in the sump when the engine is running

@@PaulChoix55 I've talked to 900BRZ and he's gonna be doing a bunch of overfill testing soon to determine what the optimal oil level is

@@nootology In another one of their videos Ansix recommends overfilling by .5L

@@jackp8022 900brz is gonna be testing multiple different overfills since he got better results with more oil, but the car also had a baffle, so he's gonna do that testing without the baffle in.

We have a Ace cs400 header and no mufflers. Mid pipe is stock. Intake side we have the charcoal filter removed with a bmc filter and Ansix auto snorkle.

@@AnsixAuto - Nice! Do you guys have dyno plots on the impact of the ACE headers?

We use the app RaceChrono logging with a ODBLink MX+ and the Ansix Auto oil pressure sensor kit. All the data on the canbus can be logged and displayed.

Take it off if you need to bring it in for any warranty issue.

i’m pretty sure that they don’t cover any track or tracked events for warranty anyway

@@andrikbalderas5628they have covered them. But you gotta fight them maybe with social medias help lmao

​@@andrikbalderas5628That goes back to the initial warranty claims about the car that blew up because they saw it oversteering. The car comes with a 1yr NASA membership. Subaru was handling warranty issues easily, Toyota was more of a pain but usually honored it.

If it’s double loose, u should probably just tighten it.

We're going to do a video showcasing all the mods on our car, stay tuned!

In theory yes, in practice, the space is quite tight. You might need to extend it up higher.

Not necessary but could give you extra peace of mind. Consider cleaning out the RTV from the pickup though.

Sorry we don't have any additional tests planned but we believe there are some other owners testing that out.

​@@AnsixAutowhy wouldn't you test that?

@@AnsixAutowhy not? 🤔🤔👀

Around 8 PSI.

It holds the oil if you fill it prior to closing it. No issues with mixing. The temperature difference isn’t that huge.

Absolutely. We’re very fortunate to have this sweet track!

We might look at putting together a video for the future about how to deal with Accusumps.

@@AnsixAuto I seen in the video that you were going to do a video on questions people had so I had to ask. I will keep my fingers crossed for the next video. Maybe it’s a dark art or magical secrets but no one ever addresses my previous question. Every video is installation and driving the car. No one shows the in between. Thanks 🤙🏽

We're going to make a video shortly explaining how to setup the Accusump. The idea is, you fill the accusump and close the valve, then you correct the engine oil level. There isn't really an issue with it overfilling, it's just one extra quart in the sump at idle.

It goes into a galley port below the intake elbow.

Absolutely, that's what we do. We only have it open on track.

I already bought the tomei baffle but didn't install and i dont know if its compatible with the accusump

It’s a rep Adro wing with endplates we designed in house.

We're running 5w40

@@AnsixAuto got it, and now for my stupid question. Lets say after track day Im done with the 5w40 then drain it to put 0w-20 back in for street use. Can leave the accusump with 5w-40 in it? 😶

@@CrescentBRZ Yah you can leave the 5W40 in there. If wherever you live isn't that cold, you likely don't need to switch back to 0w20 unless you want the minor benefit of better fuel economy.

2GR GR86 or BRZ would be awesome!

@@AnsixAuto I'm honestly surprised it hasn't been done to a previous gen yet

We'd love to see more information. Do you have any logs or any information about the baffle that came with your car? Our car is a 2023 model year and it didn't have anything different compared to the previous model year.

We have a baffle installed. Check out our previous video for a overview of the mods.

It would be nice to see a video of a stock car with one of these installed as most baffles on the market look pretty pointless compared to proper baffled sumps on other cars.@@AnsixAuto

It would not be necessary. We'd recommend cleaning the RTV from the pickup though.

We haven't tested the WRX so we can't say. It only affects cars on the track because of the high lateral G forces.

@@AnsixAuto Oh, absolutely, I meant it with sarcasm because it's the one car that actually had to endure high Gs. And hopefully we find out if the WRX doesn't have the same issue, thanks for all the hard work!

@@kakashikak Find out what the oil pan looks like on a WRX application and if it's different (better) then you may have the answer on this subject.

We have a 2 quart accusump installed.

I wouldn't be too concerned if you're not tracking. I would consider cleaning out the RTV though.

@@AnsixAuto problem is getting a shop to do it without it voiding the warranty, dealership won't even touch because of a handful of reasons they gave me. They said they've never even heard of the RTV issue, full of crap right?! Couldn't even get them to check my diff plug cuz it was leaking, they said only if I spent 6G for a complete rebuild kit...the car had 6k "soft" miles at the time! I looked at it....loose so I bought a brand new one and diff fluid. but now it's in the system as damaged and void warranty.

@@AnsixAuto I'd like too, but apparently no shops wanna touch it at this point and I don't have the resources to do it myself

1st gen doesn't have oil pressure drops on right hand turns.

@@ruturaj47 ah ic well that is good to hear

Yes it would work. The pressure drops aren’t as bad in the first gen but they still exist. Check out @900brz video on the topic.

Yes and they have been proven (check Element Tuning). First gens oiling problems usually occur when running greater power levels with forced induction, which require extra oil pressure at the rod bearings to maintain the oil wedge. I've killed 2 engines because of this

Our setup uses the manual valve so there isn't a trigger pressure. The Accusump will constantly try to stabilize the pressure in the engine.

@@AnsixAuto I see, so it is automatically controlling pressure even with just a manual valve? I'm new to these kinds of systems so thanks for letting me know. I'm definitely going to pick one up as soon as I can. I would like a video on a more in depth explanation and setting up if you ever get around to it.

@@burakoshimazakiWe're going to make a video explaining it in the near future. The Accusump behaves like a big balloon in the oiling system. When the pressure it high, it fills up and when the pressure is low, it deflates and supplies the engine with oil.

@@AnsixAuto thank you for the reply. Is there ever any concern of too much oil being stored and the pickup experiencing cavitation?

@@burakoshimazaki The amount of oil being stored is limited. The oil level of the engine is set with the accumulator filled. The accusump should not change whether or not the picup experiences cavitation.

Yes we have baffles, watch our previous video to see all the mods on our car.

It's a ADRO rep with custom end plates.

That's not true. Motors have blown in GR86 Cup and the GR86 and BRZ race in Japan.

Yes, it works for any car.

@@AnsixAuto can you ship to South Africa?

@@daniyaalmaneveld3779 Yes we can. Maybe not the Accusump itself though.

Unfortunately not...

@@AnsixAuto Oh. Boo....

We'd be more than happy to help them out!

Yah.. the demand is still high.

It's just an inherent problem with the boxer layout unfortunately.

@@AnsixAuto i think porsche managed to control oil surge by having small scavenge pumps in the heads! But I know some porsche models also suffer from oil surge.

Too ridiculous?

@@AnsixAuto Bit.

Which group?

@@LiquidTurbo ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-LEin1Z--koA.htmlsi=EFCEwFt1tjM5utNH. The channel is 900BRZ

Decent plan. We might choose a different motor just to be different.

That's untrue.

Well, may be as it is true that it takes energy to refill. My thought on a positive displacement pump what would happen is that oil pressure will drop back to the remaining pressure in the accumulator until refilled, that is up to the tertiary valve. The key a proper discharge and refill rate.

The only way to fix oil pressure drops is to stop using the boxer engine completely and Subaru probably isn't going to do that. The only mitigation is with special tools like a dry sump, which is what Porsche has done ON VERY SPECIFIC MODELS, specifically the ones meant to be raced. That doesn't make sense for 99.99% of Subaru owners who never see a track, and not even 99% of BRZ owners who never hit the sustained Gs required with the stock tires.

@@patchouli9 Ty for the input. Subaru should step up and make it stock equipment. They, SUBARU, aren't starving - (they leave that to their vehicle engines) Cars are as much as houses, used to be, not so long ago. Making excuses for not doing the right thing on a RACE INPSIRED INTRODUCTION car, is NOT the way to treat LOYAL customers. As previously stated, It Shouldn't even be an issue. PERIOD.

@aesir0784 I don't think people want to pay an extra $500 on every Subaru for a problem that doesn't exist except for literally 5 people who raced their BRZs too hard. The same can be said for Porsche, they aren't starving yet they don't put a dry sump except for special models.

Not even a like in supoort of truth. Too many FANBOI'S I see... 🤣

@aesir0784 that's cuz you're telling people they need to spend $500 on something that's useless to them

instagram.com/ansixauto/?hl=en We need to post more...