1. Air/Oil Separator not needed unless you're running lines back into your engine 2. Drain back might be needed, but might not. If it's a small amount of oil collected it's really more complexity than it's worth to add an additional fitting into the pan. 3. This can help evacuate pressure, true. But my concern is sucking oil into the compressor at full boost. To avoid this I could still use an oil/air separator in the breather line but need a 2nd can on the PCV side which I wanted to avoid. This video is meant to provide enough information to make those decisions for your own car 😃
@@gedas3419 Yeah I have nothing to back up that it could be bad for the turbo, and I know it's good to pull a vacuum on the crankcase. I may switch over to that. I actually have hooked a MAP sensor up to my turbo inlet and it pulls decent vacuum, drops from the normal sea level 100kpa down below 90kpa while in boost
@@gedas3419 Not all cars have the same PCV requirements. When I went over 350hp on my miata I had to eliminate pre-turbo plumbing because I was getting a ton of oil in my turbo and IC pipes. This setup is the result of decades of R&D amongst turbo miata enthusiasts. Any research you do will lead back to this exact setup if youre seeking above 300whp. This was the ONLY PCV setup that worked well for me after trying multiple different configurations
Sold my Miata a long time ago but never stopped watching you, your content is great and a lot of it can transfer over to any car not just the Miata. Keep up the good work chief.
Don’t feel bad gentlemen, I am pretty sure I can say with most certainty that a REALLY large chunk of his current 121,000 subscribers are not Roadster/MX-5/Miata owners.
@@alberthernandez4362 Hate to say it but I also have sold both my Miata's. Today's prices I couldn't afford not to for the offers I got. But still a loyal sub for Greg & still wanting more Canyon driving uploads.
I remember commenting on one of your broke and boosted videos back when I was a very smart 20-year-old expert about everything, saying imperial bad, metric good. I have since grown as a person, turboed an eunos roaster of my own (with a kraken kit no less!), and have come to realise metric and imperial are not so different after all. In fact there's one thing both systems have in common. They're incompatible with imperial 😂 Honestly though your videos were a major help for myself and countless others on their quest for POWAAR and they only seem to be getting better. Little things like outlining the breather lines at 4:12, oooh, yes. Just knowing that I get to watch your videos for free, I almost feel guilty! World's best (Miata)Dad
Looks great as always! Awesome alternative to welding them like we typically do, saves you the pain of a respray if it’s already a finished cover. If you do want to put scrubbers in the baffle passages (def not required), the trick is to only put it in half of the baffle passage, on the side farthest from the AN fitting. It scrubs the oil out, but won’t let the oil weep towards the fitting and into your catch can.
You can bore out -10AN to 3/8 NPT fittings to match the -10AN ID. Pretty easy with a drill press and opens it up significantly. There's enough material on the 3/8 side to get away with it safely on a low pressure line.
Quick tip on wrinkle paint - the quality/tightness of the wrinkle is dependant on curing temp. If you are painting multiple parts that are in the same visual area, do your painting/curing all at once. Letting paint cure outdoors on different days with different temps will cause different wrinkle finish on the parts.
I am absolutely loving your vids, you have a great way of explaining things. I had an issue with my vw golf (rabbit) gti, slipping clutch, when I opened it up it was drenched in oil, worked out that the crank case was not venting well enough and was blowing past the crank seal into the bell housing at high revs . Better vent, better clutch........subbed.
On my motor I removed the pcv valve so I have two open ports on the valve cover hooked up to a three port mishimoto oil catch can and I have that third port connected to a fitting I drilled into my air filter on the turbo to pull vacuum on the entire system under all conditions, no issues so far!
I feel like I am quite sure you need to rtv the baffles back in. My old turbo setup was filling the catch can after 20 mins of normal driving. Couldn't figure out why. Pulled the valve cover to find the rtv was worn. Resealed it, and the issue went away. Multiple track days and still no issue
That is the PCV setup I settled on, but the catch can would fill up with 10-12oz of oil during a track day session. The oil would spit out of the catch can filter, travel through the hood vents and onto the windshield. At first I thought the puking oil was from worn rings, so I rebuilt the engine with your videos as a guide :) I take it back out on track and same exact issue. Same amount of oil too. My guess is the extended G's from cornering and high rpm boost is over powering the stock oil/air separation. So I fabricated an aluminum 6in x 6in x 4in vent to atmosphere catch can with loads of baffling and stainless steel wool. Then I added a drain hose from catch can to oil pan just like mazda speed miata does from the factory. No more overflowing catch can issues. I would be curious if you run into similar issues on track with your setup. The Catfish camaro guy on donut media had a video on power to weight ratio and was looking for someone to do a trackday with at button willow(mentioned it at the end). That would be a neat collab video. GL man
Might be in the catch can thread linked in the description, I think I remember it being mentioned to plug the coldside port during heavy track use due to this exact issue.
Do you have oil pressure logging? It sounds to me like the oil is hitting your crank and getting whipped up. It will change oil pressure when smashing those corners but also throw oil out the breather
@@ReubenHorner I never thought to log oil pressure, yet that's crucial info. I have an aftermarket oil pressure gauge on top of the dash that I keep eyes on in the straights, but it would be interesting to know oil pressure in corners and braking. During the build I installed an oil pan baffle with trap doors. Thanks for the input, I will hookup the oil pressure to MS3.
I like it! Love the Channel. I’ve got a 1996 MX5 that I bought a few years ago, it was put together by Flyin Miata. forged internals, ARP studs everywhere, Garrett turbo charger I don’t remember the size or at the moment, Full stainless dual exit exhaust, lowered with a Full adjustable suspension set up, under body bracing, interior upgrades. paid 6000 for it with only 53,000 original miles on the odometer and all of the original paperwork from the build. I also did several other modifications to it it. New ECU coolant reroute LS coil conversion added some dedicated power and ground cables. was tuned to 300hp unfortunately due to a few bad parameters while setting up launch control Number three connecting rod left the Chat and the engine bay.
You mentioned at idle and low throttle there is a vacuum at the intake manifold through the pcv valve. What happens to your car since you essentially deleted the pcv valve?
That Testors paint has been around for millions of years. (Joking) But forreal theyve been around for a minute and its enamel so it should hold up super well. thanks for the head up. Might use it on my entire valve cover.
420th like! I think I'll put a catch can or two on my stock NA8 in preparation for a turbo some day, I'm really excited for the low mount Kraken video!
great video as always Greg! Definitely going to be putting some of your tips to use on my supercharged 2.4l LE5 NA. The baffles in the valve cover on that motor are strikingly similar to the Miata ones.
If you're a cheap ass like me, into fab work, an old A/C receiver dryer can be repurposed as a DIY catch can. You don't even need a welder if you're planning on drilling/ tapping the dryer can as well. You can find certain ones that work better than others size/ bracketry wise. Depending on how much time you take/ materials you use, its possible to make yours look store-bought and even better than some that are dedicated catch cans. You can add a drain, sight glass, barbs for filter/ inlet/ outlet, etc👍👍
Hey Greg what's your thoughts on DIYing an oil filler cap that breathes directly with the catch can, while keeping the stock exhaust PCV that is connected to the same catch can? It runs 12psi with
The only thing missing in your list is the AN ends for the hose I was just looking for the easy way out and order form the link Love your channel Thanks for the info
Hey Greg, I've forged my motor and may be going close to 18psi, I am mainly concerned about crank case pressure and my seals. I see Level7 do a oil cap 'QuickVent' product that looks a great way of venting pressure without messing with the cam cover. I plan to utilise this with a suitable AN10 catch can, but I was wondering once I install it, and I've got 2x AN10 venting the cam cover from the oil cap, should I still keep the PCV/mani hose in place (it has a GTX valve) or cap this off completely?
I had to fit a 2L catch can (FIA regulation) on my breather side only which was enlarged because on NA high compression, the oil fumes lower the overall fuel RON index which is not good on a race engine...
coool video Greg just small note regards of math - increasing diameter from original 6.39mm up to 9.15mm will increase area (which is what matters) by over 100% not 43% so you should be good :D
Could connect the oil catch can to the intake of the turbo help to the ventilation system? Since it’s a vaccum point should help to suck the vapours on the top of the head.
Made the valve cover mod myself (welded because im a pro of course). Cleaned the rtv from baffle plates and DID NOT put any new rtv... Tried it without any hoses and no hood on the car, *fuckyyes* and after a couple of minutes when oil got up to temp it started squirting all over my windshield (yes while driving). Let me tell you there's no windshield washer fluid for that scenario... To sum up, a lot of oil got into my baffles just by creeping thru the non rtv'd surfaces and then when crank case pressure came it looked like I were running a fryer at McDonald's. Rtv your baffle plates (if you dont have the old rtv intact) Don't run without a hood Don't make the AN10 fittings point straight up. My 2 cents
You're the second person to report the issue with not RTV'ing the baffle plates so it definitely sounds like a good idea. I've done this to 2 other valve covers and had no problem, so mixed results are possible. Another thing someone else mentioned is using loctite on the screws, typically I don't worry about this myself because the soft aluminum does a great job at holding screws in, but it won't hurt anything.
@@TheCarPassionChannel Just to add, welded the fittings straight up and also got the cheapest AN fittings. Guess who had lots of problem closing ny hood? Had to mash my fittings from 90 degrees to somewhat like 130 degrees. At last I ordered some higher quality fittings with much shorter neck and larger diameter. Still hits the hood but its something 🤷
Is a vacuum from the intake not needed? Watching your video for future knowledge of doing this myself and am curious if you found this efficient over time?
I had a dual breather setup with no PCV just like this, just without enlarging the passages. I would notice while letting the car idle for a while, I'd see vapors come out the catch can and out the tailpipe upon initial throttle. Sadly I didn't get to put enough miles on the setup due to thrust bearing failure, but I am curious to hear how this works out on the street for you.
Went ahead and ordered the same as you to make a catch can. Unfortunately the engine builder of my forged 1.6 put the thrust washers in backward and destroyed my motor. Lasted 100 miles. Should have new motor up and running within 3 weeks. Would love to race you when its ready. My Garrett 2867r Gen 2 would make an interesting run.
Hi Greg, did this end up solving your leaking oil seals on your red car? I have a freshly built motor with oem seals and have leaked through two front main seals. Breather system is AN6 and I'm thinking it might be time to go bigger
I’ve thought about running a VTA can from the old oil drain from the 323 (plug behind the alternator on the 1.6) but unsure if it’ll be beneficial or not?
I see one problem with this. Sludge. The factory PCV system is there for a reason. It's to prevent sludge buildup. Tho maybe with a car that doesn't get to see a lot of miles, it's not such a big issue. For a daily driver tho, you'll definetly wanna keep some sort of vacuum on the valve cover
Was your catch can on the PCV side or breather? On the PCV side there would potentially be vacuum pulled on that chamber so it could certainly suck oil in
@@TheCarPassionChannel I had one catch can for both the pcv and breather which vented to atmosphere. was not connected to the intake. Still cant get my head around to why it pushed so much oil (form memory it was mainly the breather side) out without the plates sealed up.
Run a breather hose from the valve cover to the catch can. Run a second high-temp hose to North of the catalytic converter (wink wink) to a welded bung that is angled pointing downstream of the exhaust. Yes, the hose should be flex steel for a foot or two as it connects with the exhaust. Place a high temperature one-way valve inline, in case of backfire. The suction from the exhaust will pull out the oil mist from the crankcase, and it will "generally" burn up as it exits the tailpipe. Prolly better for race cars than something that needs to pass emissions...
Is there a risk for those Phillips screws to back out and fall into the cams? Would it be worth using blue loctite? I don’t have a Miata so I have no idea.
I was literally just researching this the other day for my NB and then gave up after reading 3 different answers. My Turbo BRZ has a dual catch can set up with a breather pre-turbo because emissions laws where I live. I’m thinking it’s overkill for the MX-5.
I love how straight the downpipe comes out, and that it keeps that hot unit of a turbo down low and somewhat "farther" from the engine bay. It gives you more engine bay space as well, but the downside is that it's quite a bit harder to work on, which you'll see in the manifold install video, hahaha. I could not imagine installing this thing with PS and AC.
@@TheCarPassionChannel I really want to keep PS and AC, even though my AC doesn’t work now I want to get it repaired… my power goals are low 200’s at the wheels so I think I’m good with the high mount but I’ll continue researching
Hey Greg, quick question. I have the same old mishimoto can that you had and if I go rip around all day I can easily fill the can up almost halfway every time. Is there a reason for this or is it just poor ventilation? My car is a 1.6 turbo that makes roughly 225 whp.
Hi Greg, I know you said in the video that for cars in the 200-250hp range you don't need to do this, my question is can I do this on my 240whp car and it will still be a benefit? Currently running no catch can at the moment and wanna do this route over a separator between the PCV and intake
The benefit from running a can still exists because you're avoiding oil vapors going into the intake - the comment about 250whp was mostly referring to converting the PCV into an open breather. The common setup is just like you said - using an oil/air separator in line with the stock PCV system, and either running the breather to a catch can OR running a second oil/air separator in the breather line in case you want/need to hook that up to your intake.
I’ve seen other videos of older small block engines that instead using the intake to pull pressure they use the exhaust which would reduce carbon build up id think? Anyone think this would work on a Miata?
Not a big fan of open systems... Also, placing it on exhaust side has its own potential problems. Have you considered adding a vacuum pump or something like that?
I have a turbo 1.6 and I noticed a ton of blow by should I upgrade the pcv valve and port out the breather side I’m going to be drifting with the car what do you recommend? I’d ask the fb groups but rather get intelligent responses instead of 100 smart ass comments
Any catch can/air oil separator system is only going to manage the blowby, nothing is going to reduce it. But, it is important that the blowby is able to escape, otherwise it can cause leaking seals. You also want to avoid constantly feeding oil into the intake.
You need some JIS screwdrivers. Those are not phillips, they're japanese industrial standard. Slightly different. A phillips can round them out. Look for the vessel megadora set on amazon or get at least a #2 from them.
I read something about oil droplets hitting compressor blades @ 170,000RPM and that scared me away from it. And - it wouldn't pull a vacuum since this can is vented.
@@miatamadness9535 Yeah that is true, but I also wanted to avoid dual cans. I'm just testing this setup out, if I experience issues I can move on to another setup.
I just needed to reconfigure the system to let the crankcase breathe more, needed something with 2 inlets and a vent, rather than an inlet and outlet designed for oil/air separation
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
![Troubleshooting 6 Common Issues Your Miata Might Have! [Project 2SJ Ep5]](/img/1.gif)
3 Things I thought would be made in a 'optimal' setup. 1 Air oil seperator. 2. Oil drain back to oil pan. 3. Air back to intake turbo suck side.
1. Air/Oil Separator not needed unless you're running lines back into your engine
2. Drain back might be needed, but might not. If it's a small amount of oil collected it's really more complexity than it's worth to add an additional fitting into the pan.
3. This can help evacuate pressure, true. But my concern is sucking oil into the compressor at full boost. To avoid this I could still use an oil/air separator in the breather line but need a 2nd can on the PCV side which I wanted to avoid.
This video is meant to provide enough information to make those decisions for your own car 😃
@@TheCarPassionChannel yea, good answer. TurboBandit runs 900hp on Mercedes with breather preturbo.
@@gedas3419 Yeah I have nothing to back up that it could be bad for the turbo, and I know it's good to pull a vacuum on the crankcase. I may switch over to that. I actually have hooked a MAP sensor up to my turbo inlet and it pulls decent vacuum, drops from the normal sea level 100kpa down below 90kpa while in boost
@@TheCarPassionChannel ♥️
@@gedas3419 Not all cars have the same PCV requirements. When I went over 350hp on my miata I had to eliminate pre-turbo plumbing because I was getting a ton of oil in my turbo and IC pipes. This setup is the result of decades of R&D amongst turbo miata enthusiasts. Any research you do will lead back to this exact setup if youre seeking above 300whp. This was the ONLY PCV setup that worked well for me after trying multiple different configurations
Sold my Miata a long time ago but never stopped watching you, your content is great and a lot of it can transfer over to any car not just the Miata. Keep up the good work chief.
I've never owned a miata, and likely won't, but I still get excited with every new video!
@@cdsprech same here.
Dang. I sold my Miata yesterday.
Don’t feel bad gentlemen, I am pretty sure I can say with most certainty that a REALLY large chunk of his current 121,000 subscribers are not Roadster/MX-5/Miata owners.
@@alberthernandez4362 Hate to say it but I also have sold both my Miata's. Today's prices I couldn't afford not to for the offers I got. But still a loyal sub for Greg & still wanting more Canyon driving uploads.
Stop it Greg Peters. Stop it. Your passion for the Miata is contagious.
I remember commenting on one of your broke and boosted videos back when I was a very smart 20-year-old expert about everything, saying imperial bad, metric good. I have since grown as a person, turboed an eunos roaster of my own (with a kraken kit no less!), and have come to realise metric and imperial are not so different after all. In fact there's one thing both systems have in common. They're incompatible with imperial 😂
Honestly though your videos were a major help for myself and countless others on their quest for POWAAR and they only seem to be getting better. Little things like outlining the breather lines at 4:12, oooh, yes. Just knowing that I get to watch your videos for free, I almost feel guilty!
World's best (Miata)Dad
Looks great as always! Awesome alternative to welding them like we typically do, saves you the pain of a respray if it’s already a finished cover. If you do want to put scrubbers in the baffle passages (def not required), the trick is to only put it in half of the baffle passage, on the side farthest from the AN fitting. It scrubs the oil out, but won’t let the oil weep towards the fitting and into your catch can.
You can bore out -10AN to 3/8 NPT fittings to match the -10AN ID. Pretty easy with a drill press and opens it up significantly. There's enough material on the 3/8 side to get away with it safely on a low pressure line.
I haven't had a mx5 in over 5 years and I'm still watching your videos. You're awesome Greg, thanks for content
Quick tip on wrinkle paint - the quality/tightness of the wrinkle is dependant on curing temp. If you are painting multiple parts that are in the same visual area, do your painting/curing all at once. Letting paint cure outdoors on different days with different temps will cause different wrinkle finish on the parts.
Clicked to learn automotive stuff….now I’m meditating. 😎
I am absolutely loving your vids, you have a great way of explaining things. I had an issue with my vw golf (rabbit) gti, slipping clutch, when I opened it up it was drenched in oil, worked out that the crank case was not venting well enough and was blowing past the crank seal into the bell housing at high revs . Better vent, better clutch........subbed.
What a good & original way to start this upload….. thanks from Australia
That exhaust manifold looks crazy!!!
On my motor I removed the pcv valve so I have two open ports on the valve cover hooked up to a three port mishimoto oil catch can and I have that third port connected to a fitting I drilled into my air filter on the turbo to pull vacuum on the entire system under all conditions, no issues so far!
I feel like I am quite sure you need to rtv the baffles back in. My old turbo setup was filling the catch can after 20 mins of normal driving. Couldn't figure out why. Pulled the valve cover to find the rtv was worn. Resealed it, and the issue went away. Multiple track days and still no issue
Same thing happened to me, definitely seal those baffles.
That is the PCV setup I settled on, but the catch can would fill up with 10-12oz of oil during a track day session. The oil would spit out of the catch can filter, travel through the hood vents and onto the windshield. At first I thought the puking oil was from worn rings, so I rebuilt the engine with your videos as a guide :) I take it back out on track and same exact issue. Same amount of oil too. My guess is the extended G's from cornering and high rpm boost is over powering the stock oil/air separation. So I fabricated an aluminum 6in x 6in x 4in vent to atmosphere catch can with loads of baffling and stainless steel wool. Then I added a drain hose from catch can to oil pan just like mazda speed miata does from the factory. No more overflowing catch can issues.
I would be curious if you run into similar issues on track with your setup. The Catfish camaro guy on donut media had a video on power to weight ratio and was looking for someone to do a trackday with at button willow(mentioned it at the end). That would be a neat collab video. GL man
Might be in the catch can thread linked in the description, I think I remember it being mentioned to plug the coldside port during heavy track use due to this exact issue.
Do you have oil pressure logging? It sounds to me like the oil is hitting your crank and getting whipped up. It will change oil pressure when smashing those corners but also throw oil out the breather
@@whippingstar I have tried that, it just pukes out the hot side. Thanks for the input tho
@@ReubenHorner I never thought to log oil pressure, yet that's crucial info. I have an aftermarket oil pressure gauge on top of the dash that I keep eyes on in the straights, but it would be interesting to know oil pressure in corners and braking. During the build I installed an oil pan baffle with trap doors. Thanks for the input, I will hookup the oil pressure to MS3.
Really the best INTRO. breathing is so important
thanks for the video. It was helpful in my non miata 928 GTS motor which has a lot of blow by.
Epic beginning. Breathing 😮💨 🧘🏾
I like it! Love the Channel. I’ve got a 1996 MX5 that I bought a few years ago, it was put together by Flyin Miata. forged internals, ARP studs everywhere, Garrett turbo charger I don’t remember the size or at the moment, Full stainless dual exit exhaust, lowered with a Full adjustable suspension set up, under body bracing, interior upgrades. paid 6000 for it with only 53,000 original miles on the odometer and all of the original paperwork from the build. I also did several other modifications to it it. New ECU coolant reroute LS coil conversion added some dedicated power and ground cables. was tuned to 300hp unfortunately due to a few bad parameters while setting up launch control Number three connecting rod left the Chat and the engine bay.
I was just talking about this with one of my coworkers. Great video, appreciate the link!
Sorry, I'm just here looking for stuff for my escort gt. It's the same 1.8 bp05 as the Miata. Already learned a good amount from you.
You mentioned at idle and low throttle there is a vacuum at the intake manifold through the pcv valve. What happens to your car since you essentially deleted the pcv valve?
That Testors paint has been around for millions of years. (Joking) But forreal theyve been around for a minute and its enamel so it should hold up super well. thanks for the head up. Might use it on my entire valve cover.
420th like! I think I'll put a catch can or two on my stock NA8 in preparation for a turbo some day, I'm really excited for the low mount Kraken video!
that paint crawl is called capillary action. has to deal with surface tension force
This is the only catch can setup that worked for me when i went over 350hp. I tried multiple setups and nothing worked except this
Really good to know about the Testor's trick! I have a bunch of model paint lying around... perhaps I'll give it a try!
Pro Tip: use a PCV valve from a turbo 1995 Supra (and a grommet too). Fits the Miata without mods and is all metal and definitely holds boost!
Mazda 323 GTX PCV falls into the same category 👍
Jesus man! I gotta start taking notes here! PCB valve tip. Nice!
great video as always Greg! Definitely going to be putting some of your tips to use on my supercharged 2.4l LE5 NA. The baffles in the valve cover on that motor are strikingly similar to the Miata ones.
Dude, I'm breathing better already! Namaste
Looks great, the lettering came out super!
If you're a cheap ass like me, into fab work, an old A/C receiver dryer can be repurposed as a DIY catch can. You don't even need a welder if you're planning on drilling/ tapping the dryer can as well. You can find certain ones that work better than others size/ bracketry wise. Depending on how much time you take/ materials you use, its possible to make yours look store-bought and even better than some that are dedicated catch cans. You can add a drain, sight glass, barbs for filter/ inlet/ outlet, etc👍👍
Crazy that you bring out a vid on catch cans when that's the thing I'm just about to buy for my nearly done mk2 turbo 👍👍👍🏎️🏎️🏎️🚔
Great stuff, this hopefully solves my track day oil oil leak!
Another great video Sir! I used loctite on my baffle screws during reassembly as you can imagine the outcome when pushing the redline…😇
Hey Greg what's your thoughts on DIYing an oil filler cap that breathes directly with the catch can, while keeping the stock exhaust PCV that is connected to the same catch can? It runs 12psi with
Sounds dodgy. Follow these exact instructions is my options
The “demo engine” will never be forgotten I remember seeing the video when u first got it. 😂
The only thing missing in your list is the AN ends for the hose
I was just looking for the easy way out and order form the link
Love your channel
Thanks for the info
Ohhh shoot you're right, I'll get those on there in the next half hour
should always use a bit of cutting oil when tapping threads
Please get a bench vise! It will make everything so much easier to drill and tap.
Hey Greg, I've forged my motor and may be going close to 18psi, I am mainly concerned about crank case pressure and my seals. I see Level7 do a oil cap 'QuickVent' product that looks a great way of venting pressure without messing with the cam cover. I plan to utilise this with a suitable AN10 catch can, but I was wondering once I install it, and I've got 2x AN10 venting the cam cover from the oil cap, should I still keep the PCV/mani hose in place (it has a GTX valve) or cap this off completely?
your giving away my stock block secrets now !! only clean air to me is how an engine should run ;
Stock block king in the house! 👑
Great video and explanation, very helpful. Thank for the hard work and posting this for us to watch!
Great video Greg! Does it matter which side hose goes higher or lower on your catch can? Any advantage or disadvantage one way or other?
I had to fit a 2L catch can (FIA regulation) on my breather side only which was enlarged because on NA high compression, the oil fumes lower the overall fuel RON index which is not good on a race engine...
coool video Greg just small note regards of math - increasing diameter from original 6.39mm up to 9.15mm will increase area (which is what matters) by over 100% not 43% so you should be good :D
Could connect the oil catch can to the intake of the turbo help to the ventilation system?
Since it’s a vaccum point should help to suck the vapours on the top of the head.
good job bro, looks good💪
Made the valve cover mod myself (welded because im a pro of course). Cleaned the rtv from baffle plates and DID NOT put any new rtv... Tried it without any hoses and no hood on the car, *fuckyyes* and after a couple of minutes when oil got up to temp it started squirting all over my windshield (yes while driving).
Let me tell you there's no windshield washer fluid for that scenario...
To sum up, a lot of oil got into my baffles just by creeping thru the non rtv'd surfaces and then when crank case pressure came it looked like I were running a fryer at McDonald's.
Rtv your baffle plates (if you dont have the old rtv intact)
Don't run without a hood
Don't make the AN10 fittings point straight up.
My 2 cents
You're the second person to report the issue with not RTV'ing the baffle plates so it definitely sounds like a good idea. I've done this to 2 other valve covers and had no problem, so mixed results are possible. Another thing someone else mentioned is using loctite on the screws, typically I don't worry about this myself because the soft aluminum does a great job at holding screws in, but it won't hurt anything.
@@TheCarPassionChannel Just to add, welded the fittings straight up and also got the cheapest AN fittings.
Guess who had lots of problem closing ny hood? Had to mash my fittings from 90 degrees to somewhat like 130 degrees.
At last I ordered some higher quality fittings with much shorter neck and larger diameter. Still hits the hood but its something 🤷
always showing good vids...greeting from australia
That cold open! I'm W E A K!!! 🤣😂😅
thanks greg, exactly how i plan to do it. hows your re-route going? piping looking good in the bay
Is a vacuum from the intake not needed? Watching your video for future knowledge of doing this myself and am curious if you found this efficient over time?
I had a dual breather setup with no PCV just like this, just without enlarging the passages. I would notice while letting the car idle for a while, I'd see vapors come out the catch can and out the tailpipe upon initial throttle. Sadly I didn't get to put enough miles on the setup due to thrust bearing failure, but I am curious to hear how this works out on the street for you.
Went ahead and ordered the same as you to make a catch can. Unfortunately the engine builder of my forged 1.6 put the thrust washers in backward and destroyed my motor. Lasted 100 miles. Should have new motor up and running within 3 weeks. Would love to race you when its ready. My Garrett 2867r Gen 2 would make an interesting run.
Damn that sucks
Just what I needed! 😀
R there any downsides to putting a tiny air filter on the valve cover, on the other breather on opposite side of the PCV breather? NA set up
No and that's a common setup. Reading through that catch can thread will help cover all the different setups
Hey Greg! Awesome video! I will definitely be doing this to mine. Just a heads up, the link for the "3/8 npt - 10an" links to a "1/4 npt - 4an"
Thank you, the link should be correct now
When I first turboed my miata I ran the non valve port straight to atmosphere and after a few weeks both of my cam seals walked out.
Hey Greg do you have any links to information on pcv and breather systems for itb applications??
Hi Greg, did this end up solving your leaking oil seals on your red car?
I have a freshly built motor with oem seals and have leaked through two front main seals. Breather system is AN6 and I'm thinking it might be time to go bigger
Yo. my guy. Please please PLEASE tell me what brand shirt that black plaid one with the brown collar and cuffs is. that thing is fire and i need one.
I got you covered my dude - amzn.to/3lcbCRy
It's 100% the most comfortable and best looking flannel I own.
@@TheCarPassionChannel You sir are a legend. The black one was out of stock but I got myself a nice one 👍 Thank you.
@@TheCarPassionChannel got my flannel in the mail today. It's amazing. Incredibly soft and comfy. Thank you so much 🙏
I’ve thought about running a VTA can from the old oil drain from the 323 (plug behind the alternator on the 1.6) but unsure if it’ll be beneficial or not?
I regret not getting my Kraken manifold and DP powdercoated. Would recommend doing it before it gets tarnished Grag!
Once again Greg top quality content love your work keep it up man 🙏
i wonder if the exhaust is gonna sound different with the offset turbo
I see one problem with this. Sludge. The factory PCV system is there for a reason. It's to prevent sludge buildup.
Tho maybe with a car that doesn't get to see a lot of miles, it's not such a big issue. For a daily driver tho, you'll definetly wanna keep some sort of vacuum on the valve cover
I needed to see this!!!
19:14 In my experience you should RTV these plates on, i didnt and filled my catch can in 40 km's. rtv'd them back on and the problem was gone.
Was your catch can on the PCV side or breather? On the PCV side there would potentially be vacuum pulled on that chamber so it could certainly suck oil in
@@TheCarPassionChannel I had one catch can for both the pcv and breather which vented to atmosphere. was not connected to the intake. Still cant get my head around to why it pushed so much oil (form memory it was mainly the breather side) out without the plates sealed up.
Thanks again!
Run a breather hose from the valve cover to the catch can. Run a second high-temp hose to North of the catalytic converter (wink wink) to a welded bung that is angled pointing downstream of the exhaust. Yes, the hose should be flex steel for a foot or two as it connects with the exhaust. Place a high temperature one-way valve inline, in case of backfire. The suction from the exhaust will pull out the oil mist from the crankcase, and it will "generally" burn up as it exits the tailpipe. Prolly better for race cars than something that needs to pass emissions...
you sold me on the citrus paint stripper with "it smells great"
Could very worn valve seals cause crankcase pressurization?
Is there a risk for those Phillips screws to back out and fall into the cams? Would it be worth using blue loctite? I don’t have a Miata so I have no idea.
Yeah, definitely a good idea.
I blast wrinkle black with a heat gun straight away after 3 or so coats, aint right but it works
Hey Greg where did you get that Mazda flag from?
Could you make a Mac valve (ebc) install video !? With changes in megasquirt ?
Check out my MSM tuning video, I'm pretty sure I cover it there.
namaste Greg! hitting like just for the intro hahahah
put RTV .. don't skip that step. It only take a few minutes, never had any problems on my build
Hi, so did you remove the pcv?
I was literally just researching this the other day for my NB and then gave up after reading 3 different answers. My Turbo BRZ has a dual catch can set up with a breather pre-turbo because emissions laws where I live. I’m thinking it’s overkill for the MX-5.
I’m considering the Kraken kit myself. Why would I go with a low mount over a high mount? I was going to get the high mount because I didn’t know
I love how straight the downpipe comes out, and that it keeps that hot unit of a turbo down low and somewhat "farther" from the engine bay. It gives you more engine bay space as well, but the downside is that it's quite a bit harder to work on, which you'll see in the manifold install video, hahaha. I could not imagine installing this thing with PS and AC.
@@TheCarPassionChannel I really want to keep PS and AC, even though my AC doesn’t work now I want to get it repaired… my power goals are low 200’s at the wheels so I think I’m good with the high mount but I’ll continue researching
Hey Greg, quick question. I have the same old mishimoto can that you had and if I go rip around all day I can easily fill the can up almost halfway every time. Is there a reason for this or is it just poor ventilation? My car is a 1.6 turbo that makes roughly 225 whp.
Is the catch can in the breather system, or in the PCV system? Usually just more blowby means more oil vapor is going to enter the can.
Hi Greg, I know you said in the video that for cars in the 200-250hp range you don't need to do this, my question is can I do this on my 240whp car and it will still be a benefit? Currently running no catch can at the moment and wanna do this route over a separator between the PCV and intake
The benefit from running a can still exists because you're avoiding oil vapors going into the intake - the comment about 250whp was mostly referring to converting the PCV into an open breather. The common setup is just like you said - using an oil/air separator in line with the stock PCV system, and either running the breather to a catch can OR running a second oil/air separator in the breather line in case you want/need to hook that up to your intake.
@@TheCarPassionChannel thanks so much dude, can I still use this process in my 240hp application? The AN lines look mint!
@@andrewatkins1438 Yeah you could do the AN lines on both sides and still have a functional PCV system too
PSH, that red paint, ain't gonna last! ;)
I’ve seen other videos of older small block engines that instead using the intake to pull pressure they use the exhaust which would reduce carbon build up id think? Anyone think this would work on a Miata?
Not a big fan of open systems... Also, placing it on exhaust side has its own potential problems.
Have you considered adding a vacuum pump or something like that?
what is that hole on the top of the valve cover
For the VVT Actuator
I have a turbo 1.6 and I noticed a ton of blow by should I upgrade the pcv valve and port out the breather side I’m going to be drifting with the car what do you recommend? I’d ask the fb groups but rather get intelligent responses instead of 100 smart ass comments
Any catch can/air oil separator system is only going to manage the blowby, nothing is going to reduce it. But, it is important that the blowby is able to escape, otherwise it can cause leaking seals. You also want to avoid constantly feeding oil into the intake.
You need some JIS screwdrivers. Those are not phillips, they're japanese industrial standard. Slightly different. A phillips can round them out. Look for the vessel megadora set on amazon or get at least a #2 from them.
Nice, creativity rules :-)
How come you didn't reuse your existing catch cans and run a return line pre compressor and use that to pull vacuum through the crank case?
I read something about oil droplets hitting compressor blades @ 170,000RPM and that scared me away from it. And - it wouldn't pull a vacuum since this can is vented.
@@TheCarPassionChannel that can wouldn't but your old mishimoto ones would/should be alright 😂
@@miatamadness9535 Yeah that is true, but I also wanted to avoid dual cans. I'm just testing this setup out, if I experience issues I can move on to another setup.
damn, i tapped my exhaust side 1/4 npt because I didnt think there would be enough metal for 3/8
It all makes sense, but I'm still trying to figure out what an inch is. lol
Sweet!
did you dislike the mishimoto oil catcher?
I just needed to reconfigure the system to let the crankcase breathe more, needed something with 2 inlets and a vent, rather than an inlet and outlet designed for oil/air separation
Did you get any footage from MATG?
No there won't be any MATG video this year, just wanted to enjoy the event without having to worry about filming everything
Greg. I like your flannel. Where do I get one
Amazon - Legendary Whitetails is the brand. Best flannel I own. amzn.to/3muxfvQ
@@TheCarPassionChannel thanks m8. I got a few from costco last year i really like but its always a good idea to expand
Optimal catch can is a healthy engine. Facts.