Just a helpful note: I installed the AOS yesterday and it took hours to hook up the hoses. Found one of the nipples and got first hose on fairly quick. Thought it was on the PCV valve. We could not find the intake nipple??? Ruined my arm getting in there too many times. Finally after several hours I figured it out!!!! The PCV nipple should be pointing toward the firewall, but it had turned and was pointing toward the passenger tire. That is why we could not find the second nipple for hose. Finally got the nipple turned toward the firewall and it was pretty easy then. Learn from my experience, and the install is not very hard.
Thank for the video FM. Took an hour, one sore forearm. Key is to expand the hose ends and a small bit of oil like mentioned by others. Makes the job straight forward.
The rear hoses aren't so bad if you take the time to 'practice' a few times and visualize what you'll be doing. Could not have done it without this video, though!
This was not nearly as difficult to install as the video made out. I think I did the entire install, start to finish, in about 45 minutes. The hardest thing, as mentioned, is the nipple on the engine block. I used a drop of oil in the hose, then shoved the handle of a ratchet wrench into the end of that hose for a minute or two to stretch it out slightly. I removed the handle, and immediately put the hose onto the nipple - it slid right on using only one hand, no fuss. I do wish there was something that screwed into the drain plug so that a hose could be run down to the bottom of the engine bay to drain, rather than having to remove the AOS from its bracket in order to drain it.
This system looks like a total pain in the ass. A lot of catch can systems have a dip stick that seems like it would be helpful. Taking this thing on and off to check the levels every 1000 miles is gonna suck googs.
On a direct injection engine it's usually considered one of those "better safe than sorry" items for preventative maintenance especially on turbo cars. Verus has a little more info on their site, and there is a lot of information on the Miata forums as well.
Very informative and detailed video. Are the hoses supplied oil resistant? This is important because a hose made for lets say fuel line hose would breakdown from oil mist, and quicker then one may think. Also I would opt with using a bit of silicone lube instead of a drop of oil on hose ends since the silicone won't damage rubber and plastic like a petroleum lube would; but if the hose material is intended to carry oil then the drop of oil will not cause the rubber to break down.
As far as terminology, an Air-Oil-Separator is pretty much the same thing as a high-quality "catch-can". The Verus unit is a bit more advanced than the average catch can tho, and features multiple micron filters, baffles and includes hoses that attach to both the crank case and head. You would need a high-quality dual-catch can set-up to match the all-in-one Verus AOS.
I checked on Verus's website but didn't see anything regarding the need to replace or clean those 4 filters inside the AOS. Is there any need to maintain those filters over time?
From our experience those don't really need to be cleaned as the oil and moisture should drip down eventually. You could clean them if you wanted, but we haven't found it necessary yet.
The video shows two nipple openings on the engine stand alone block. I have the hose attached to the PCV valve. I cannot get the intake manifold hose attached. Tried for 2 hours. Arms too big I guess. But perhaps I’m trying to fit it on the wrong nipple?Not much skin left on the arm but would try again. Otherwise I have to take the manifold off.
FM Thanks for the video! Don’t want to mess this up. Please confirm the hose from the swiveling purple PCV valve connects to the check valve on the AOS (nozzle 3 when counting from the the front of the car) Is that the right way?
Check out the official written instructions from Verus, it might make things easier to explain: www.flyinmiata.com/support/instructions/misc/M04-37960%20ND%20Miata%20Air%20Oil%20Separator%2C%20Verus.pdf
Verus's instructions show the hose going on the bottom nipple on the intake, (the one under that screw) where as you put it the the top one Which one is correct? haha
The instructions and the video should be correct. The large barb with the check valve should go to the intake manifold, while the port closest to the engine on the air oil separator should go to the PCV valve, or "Engine block" as it's labelled in the Verus instructions.
Hi, i installed one of these to my supercharged ND so it had to be placed in another position, but after 2k miles when i went to drain it there was nothing in it, did i do something wrong or is it supposed to return all the fluids back? seemed to dry to me
On our ND, we rarely ever have more than a few drips. Granted, it's not driven a massive amount. A healthy engine shouldn't really have much blow by, but I'd still at least check it after every oil change. If you're worried about it, be sure to double check that all your connections are correct. Other than that, nothing seems obviously out of the ordinary.
Any problems with pressure leaking between the crank and intake through the system on higher PSI engines? I’ll be running between 14-16 psi in my 2018 club and heard there may be an issue with this.
While it may be possible under extreme conditions because the two halves in the Verus separator share a drain, this is not likely, and not something we've seen, due to the built in PCV valving inside the Verus connectors. Please reach our customer support team directly at 970-464-5600 or support@flyinmiata.com for more info!
It should, but we can't guarantee it since we've never had one to try. You might need to fab/or modify the mounting bracket that attaches the air/oil separator body. If you need more details, feel free to reach out to us at support@flyinmiata.com . Thanks!
Wondering why this one has 2 paths but all the other catch cans on the market only go on one? Also, since this system shows that when unbolted, it is 2 separate hollow halves bolten together with no seal in between, how does it prevent the oil from seeping through eachother's channels or simply mixing together? Is the shaped channels just general air flow guidance? just curious. Also wondering if anyone thought about a fuel injector that can be either manually sprayed into the throttle body or "fed" just to suck fuel down the intake ports so the valves can get chemically cleaned as you drive that way. Meth kits have proven not to clean anything, but I think the properties in actual gasoline will.
On most applications, the optimum plan would be to have two catch cans - One on the intake side, one on the exhaust. This Verus unit combines them into one smart AOS. There is no need for separate reservoirs, since the hose barbs on the Verus unit have check valves installed to prevent back flow.
An AOS will recirculate back into the engine. On healthy engines without excessive amounts of blowby, you probably won't need to empty it very much. An OCC will usually vent oil vapors to atmosphere and make a mess under your hood, rather than recirculate. Two very similar parts, but commonly misconstrued.
1st 1000 miles and got no oil on the catch can. I checked and rechecked to make sure the installation is correct and its good with no kinks either. So far no signs of busted seals. I was positive I'd get some oil in the can to make an average reading. I even checked the valves were working before installation and they are. Im perplexed 🤔. Fukit
We've seen a lot of variation of how much this kit actually catches, and it can vary a lot depending on your location, oil used maintenance schedule, mileage, etc. Even if you aren't seeing anything in the catch can, consider it good long term preventative maintenance ;)
I have a 2021 with about 40K miles on it. Header, exhaust, injectors and tuned for e85. I've had mine on for about 20K miles and haven't seen anything drain from the bottom every time I change the oil. I'm worried at times as well that it isn't catching anything.
It would be nice to see a naturally asperated install (of another type of oil separator) on a NA as well in the future. I am planning on using a KazeSpec Engineering 2 Chamber Oil Catch Can on my NA. I don't think you sell them but it would be nice to see another install. Not sure either if I would need a check valve for my intake line or not. Do ALL intake lines need check valves? I putting in my own fabbed up catch cans in my 1996 Dodge Ram 5.9 and the video brought up that question for that install as well. Thanks Again for another great video. I have really been enjoying them. Chris
Just a helpful note: I installed the AOS yesterday and it took hours to hook up the hoses. Found one of the nipples and got first hose on fairly quick. Thought it was on the PCV valve. We could not find the intake nipple??? Ruined my arm getting in there too many times. Finally after several hours I figured it out!!!! The PCV nipple should be pointing toward the firewall, but it had turned and was pointing toward the passenger tire. That is why we could not find the second nipple for hose. Finally got the nipple turned toward the firewall and it was pretty easy then. Learn from my experience, and the install is not very hard.
Sorry to hear it was such a pain, but we appreciate the tips! Hopefully that helps someone else with their install!
Thanks for the tip!
Thank for the video FM. Took an hour, one sore forearm. Key is to expand the hose ends and a small bit of oil like mentioned by others. Makes the job straight forward.
You're very welcome, and thanks for sharing your feedback!
The rear hoses aren't so bad if you take the time to 'practice' a few times and visualize what you'll be doing. Could not have done it without this video, though!
This was not nearly as difficult to install as the video made out. I think I did the entire install, start to finish, in about 45 minutes. The hardest thing, as mentioned, is the nipple on the engine block. I used a drop of oil in the hose, then shoved the handle of a ratchet wrench into the end of that hose for a minute or two to stretch it out slightly. I removed the handle, and immediately put the hose onto the nipple - it slid right on using only one hand, no fuss.
I do wish there was something that screwed into the drain plug so that a hose could be run down to the bottom of the engine bay to drain, rather than having to remove the AOS from its bracket in order to drain it.
This system looks like a total pain in the ass. A lot of catch can systems have a dip stick that seems like it would be helpful. Taking this thing on and off to check the levels every 1000 miles is gonna suck googs.
The ratchet wrench handle idea really helps out, many thanks!
Good vid choice, I’ve always wondered about the significance of them in moderate boost applications.
On a direct injection engine it's usually considered one of those "better safe than sorry" items for preventative maintenance especially on turbo cars. Verus has a little more info on their site, and there is a lot of information on the Miata forums as well.
Very informative and detailed video. Are the hoses supplied oil resistant? This is important because a hose made for lets say fuel line hose would breakdown from oil mist, and quicker then one may think. Also I would opt with using a bit of silicone lube instead of a drop of oil on hose ends since the silicone won't damage rubber and plastic like a petroleum lube would; but if the hose material is intended to carry oil then the drop of oil will not cause the rubber to break down.
Good points and yes, the included hose is rated for oil.
Hi FM, How's the fit with the Edelbrock Supercharger?
got the same question
What happens if you mixed up the hoses on the engine?
I need to change the PCV on my ND - could I get it out like this? Is it just a push fit?
What's the difference between an AOS and an oil catch can? Could we use both? Is AOS CARB compliant?
As far as terminology, an Air-Oil-Separator is pretty much the same thing as a high-quality "catch-can". The Verus unit is a bit more advanced than the average catch can tho, and features multiple micron filters, baffles and includes hoses that attach to both the crank case and head. You would need a high-quality dual-catch can set-up to match the all-in-one Verus AOS.
I checked on Verus's website but didn't see anything regarding the need to replace or clean those 4 filters inside the AOS. Is there any need to maintain those filters over time?
From our experience those don't really need to be cleaned as the oil and moisture should drip down eventually. You could clean them if you wanted, but we haven't found it necessary yet.
@@FlyinMiataVideo Thanks, much appreciated! Highly considering this as the next mod!
The video shows two nipple openings on the engine stand alone block. I have the hose attached to the PCV valve. I cannot get the intake manifold hose attached. Tried for 2 hours. Arms too big I guess. But perhaps I’m trying to fit it on the wrong nipple?Not much skin left on the arm but would try again. Otherwise I have to take the manifold off.
FM Thanks for the video!
Don’t want to mess this up.
Please confirm the hose from the swiveling purple PCV valve connects to the check valve on the AOS (nozzle 3 when counting from the the front of the car)
Is that the right way?
Check out the official written instructions from Verus, it might make things easier to explain:
www.flyinmiata.com/support/instructions/misc/M04-37960%20ND%20Miata%20Air%20Oil%20Separator%2C%20Verus.pdf
Verus's instructions show the hose going on the bottom nipple on the intake, (the one under that screw) where as you put it the the top one Which one is correct? haha
The instructions and the video should be correct. The large barb with the check valve should go to the intake manifold, while the port closest to the engine on the air oil separator should go to the PCV valve, or "Engine block" as it's labelled in the Verus instructions.
Hi, i installed one of these to my supercharged ND so it had to be placed in another position, but after 2k miles when i went to drain it there was nothing in it, did i do something wrong or is it supposed to return all the fluids back? seemed to dry to me
On our ND, we rarely ever have more than a few drips. Granted, it's not driven a massive amount. A healthy engine shouldn't really have much blow by, but I'd still at least check it after every oil change.
If you're worried about it, be sure to double check that all your connections are correct. Other than that, nothing seems obviously out of the ordinary.
If your engine is healthy and you're not running too much boost, you might not get much accumulation in the AOS which is a good thing.
@@FlyinMiataVideo appreciate the response! makes me feel better, i thought normal would be more oil build up so glad to know that would be abnormal
Cool
Do I dump the drained oil back or is it recommended to add new oil?
Dispose of the oil collected in the separator, check your levels, and add new fresh oil if necessary between oil changes.
Don't drain the oil back and it's not just engine oil that's collected.
It’ll be frothed oil with a high degree of water. You dispose of anything collected.
Any problems with pressure leaking between the crank and intake through the system on higher PSI engines? I’ll be running between 14-16 psi in my 2018 club and heard there may be an issue with this.
While it may be possible under extreme conditions because the two halves in the Verus separator share a drain, this is not likely, and not something we've seen, due to the built in PCV valving inside the Verus connectors. Please reach our customer support team directly at 970-464-5600 or support@flyinmiata.com for more info!
Is it any different if you have a Automatic.
Drop our techs a line at 970-464-5600 or email us at support@flyinmiata.com. Our CSRs should be able to give you more information there. Thanks!
No. I have an 2019 GT RF AT and I've installed this AOS and it took about an hour. Works fine.
Will this fit with the Long Road Racing strut tower X brace? The one they run on the ND Cup cars
It should, but we can't guarantee it since we've never had one to try. You might need to fab/or modify the mounting bracket that attaches the air/oil separator body. If you need more details, feel free to reach out to us at support@flyinmiata.com . Thanks!
can you make a video instal for a nd with a supercharger.
Would this be the same procedure for the 2020 ND MS-5?
The 2019 and 2020 are almost identical mechanically, so it should be the same procedure.
Wondering why this one has 2 paths but all the other catch cans on the market only go on one? Also, since this system shows that when unbolted, it is 2 separate hollow halves bolten together with no seal in between, how does it prevent the oil from seeping through eachother's channels or simply mixing together? Is the shaped channels just general air flow guidance? just curious.
Also wondering if anyone thought about a fuel injector that can be either manually sprayed into the throttle body or "fed" just to suck fuel down the intake ports so the valves can get chemically cleaned as you drive that way. Meth kits have proven not to clean anything, but I think the properties in actual gasoline will.
On most applications, the optimum plan would be to have two catch cans - One on the intake side, one on the exhaust. This Verus unit combines them into one smart AOS. There is no need for separate reservoirs, since the hose barbs on the Verus unit have check valves installed to prevent back flow.
@@FlyinMiataVideo how would you know if the check valve failed?
Why delete sound tube ? (or maybe it's not related to AOS install ?)
The Virus AOS uses the sound tube location for the install.
If that car backfired "Like my Pinto" would it blow the hoses off?
No
Not sure why they call it an AOS. It is technically a OCC. You have to drain it regularly
An AOS will recirculate back into the engine. On healthy engines without excessive amounts of blowby, you probably won't need to empty it very much.
An OCC will usually vent oil vapors to atmosphere and make a mess under your hood, rather than recirculate.
Two very similar parts, but commonly misconstrued.
1st 1000 miles and got no oil on the catch can. I checked and rechecked to make sure the installation is correct and its good with no kinks either. So far no signs of busted seals. I was positive I'd get some oil in the can to make an average reading. I even checked the valves were working before installation and they are. Im perplexed 🤔. Fukit
We've seen a lot of variation of how much this kit actually catches, and it can vary a lot depending on your location, oil used maintenance schedule, mileage, etc. Even if you aren't seeing anything in the catch can, consider it good long term preventative maintenance ;)
I have a 2021 with about 40K miles on it. Header, exhaust, injectors and tuned for e85. I've had mine on for about 20K miles and haven't seen anything drain from the bottom every time I change the oil. I'm worried at times as well that it isn't catching anything.
It would be nice to see a naturally asperated install (of another type of oil separator) on a NA as well in the future. I am planning on using a KazeSpec Engineering 2 Chamber Oil Catch Can on my NA. I don't think you sell them but it would be nice to see another install. Not sure either if I would need a check valve for my intake line or not. Do ALL intake lines need check valves? I putting in my own fabbed up catch cans in my 1996 Dodge Ram 5.9 and the video brought up that question for that install as well. Thanks Again for another great video. I have really been enjoying them. Chris
Good suggestion, we'll add it to our video list and see what we can do!
Why not purchase a product from the company (FM) that supports the MX5 community?
This is a catch can. Air Oil Separators don't need to be drained.