Valve Cover Breather/PCV Delete Review

My take on using a valve cover breather instead of the pcv on a K20 Civic Si.
Product Used: K Tuned Valve Cover Breather
Instagram: / highbeamscrew

[@jmhernandez6503]

It really did help. Much appreciated. Thanks, man!

[@blkmustang007]

That part when the motorcycle drove by was funny

[@chemsrus4914]

Eventually the side of your engine will accumulate with oil and depending on the type of air filter you're running right into the filter clogging it over time. Also I found with my 2009 Honda Civic when I would run the defroster in the winter my cab would fill with gasoline fumes. I would not recommend anyone use these, just buy an oil catch can off of Amazon and some rubber tubing if you don't want oil going into your intake.

[@adamuberschaffenheiser8501]

That is not a pcv delete. Lol the pcv valve is beside the alternator and has the tiny black hose connecting to the intake manifold. Remove the pcv 17 mm socket, plug the intake hole on the manifold then it is a pcv delete lmao.

[@5abivt]

A pcv catch can setup is the way to go not a breather. A breather system will allow blowby and oil vapor and byproducts of combustion to escape but only when there is enough pressure to force it out. A pcv system evacuates this and prevents all the byproduct of blowby to cling to all the metal components as everything is covered in oil and settle to the oil in the crankcase. This IS the actual cause of sludge in engine oil and on internals of the bottom end in an engine. It will also degrade your oil faster as the by products get into the oil. A catch can will allow the pcv to draw all this blowby out and at the same time filter it via steel wire and temperature change causing oil to turn to liquid and settle to the bottom while drawing out cleaner air back into the intake. For forced induction engine that can see boost pressure in the crankcase they make vented catch cans.

[@HighBeams]

+5abivt Yeah you're definitely right a catch can setup is the most ideal. For me on a N/A setup the breather is good enough, but a catch can would be better

[@5abivt]

HighBeamsCrew actually for NA , a breather ok and works but is better for forced induction because it prevents boost pressure building within the crankcase. Basically, all of the blowby you are getting .. very little is being pushed out from your breather *when pressure is high enough , and the rest is just swirling around in your crankcase and getting into your oil as nothing is sucking it out. How much of a difference is hard to identify as it depends on temps, oil types ,condition of rings and seal, what kind of motor and how effective the factory pcv system is etc etc. one thing you can try is to check out oil level and see if the oil is getting darker and more black much faster. Some catch cans are $150-100 I reccomend one for you instead of that small breather ;)

[@HighBeams]

Yeah you are correct! The breather was only $25 so I had to go with that option lol

[@wes1934]

Sure, if the car likes flinging around oil get a catch-can/separator. However, he did one of the best things you can do for the engine: cap off the manifold-vacuum. Sure, it pulls blowby out, but it's also sabotaging the engine by stealing engine vacuum. By capping it off, you're going to have less blowby in the first place because there's now more vacuum available to engine & more fuller combustion & less waste. Also, the breather/fresh air-hose of from filterbox to the crankcase does most of the venting anyway... Instead of this "pcv breather" setup, connect a hose from the valve cover instead, and connect it to anywhere upstream of throttle body (but preferably after MAF). Put a catch-can in between if you like. The low vacuum at pre-throttle-body is more than enough to keep blowby out. If you decide to try this setup and you want to use a pcv valve for better hose-fitting, drill out the pcv valve's washer-ball check-valve mechanism so it's hollow.

[@warrenzevonsangryghost6055]

Hoping no one listens to this 'advice', since it's nearly all wrong. PCV's do NOT 'steal' engine vacuum. The only time the valve opens is when there's little to no manifold vacuum in the first place. Improper crankcase ventilation can be quite serious, leading to major sludge issues and even a (literally) blown engine. Beyond adding a catch can for blowby oil, don't screw with your crankcase ventilation setup. Bad juju.

[@PaoXiong86]

thanks, getting one now. no wonder my intake keep getting oily

[@HighBeams]

+Pao Xiong Glad I could help!

[@chodyfoster_]

That's the ccv side wich is important but much less important than the pcv side wich is located from block to intake manifold from the valve itself the ccv side only goes from valve cover to intake. route in either a catch can or do a vent to atmosphere setup with something that collects it I noticed you also mention it cleans it up but your gonna hat it when you have contaminates all over the engine bay

[@leeronfagan6960]

What did you use to make the breather filter fit?

[@Zspeed]

Thanks for the video, supporting your channe!@Z-speed!

[@leonardfedillaga]

Is that legal in dmv smog?

[@DFish-pb5pt]

ok so where does it go...I have a quarter inch vac hose from fuel pressure regulator to my intake, then I have a 3/8" hose from my crankcase to my intake, and then I have one on the other side from the intake manifold to the PCV valve....do I put this on the crankcase and plug the intake and that's it? Nothing needs to go on the actual PCV valve?

[@HighBeams]

+D. Fish Yup put the breather on the crankcase, plug the intake, and that's all. The pcv valve is a total different part

[@DFish-pb5pt]

HighBeamsCrew good lookin out...'bout to order one

[@ShadesWade]

did you have to delete the two hoses joined with the metal ring fitting? i see your two hoses but not the ring that originally attached them together...?

[@HighBeams]

Are you referring to the other hose beside the pcv? Then yeah I deleted the metal ring when putting the intake

[@ShadesWade]

yeah the one on the crankcase on the bottom right, not the technical pcv down to the left of the manifold. thanks man!

[@ShadesWade]

reason i ask is if you run a aem v2 intake system you wont have proper clearance to fit both the intake and the breather

[@HighBeams]

Alright I get you, didn't know that actually. Luckily I'm running the k&n intake. Thanks!

[@sonicthehedgehognerd3219]

What exactly did you use to plug the intake, i might do this to my 2.2 ecotec

[@HighBeams]

I used a vacuum plug made by dorman help. Came in a pack

[@kengvang5049]

Where did you get the vacuum cap at? I have an injen cold air intake and the local auto stores around me dont have one big enough for my intake to be capped.

[@HighBeams]

Damn got mine at a local Canadian Tire. Maybe amazon sells the dorman vacuum caps

[@realtruth97]

What does the valve cover breather do? Does it replace the pcv vacuum line? Does it let in air, or out?

[@chemsrus4914]

Out and into the air under the hood of your car. Eventually the side of your engine will accumulate with oil and depending on the type of air filter you're running right into the filter clogging it over time. Also I found with my 2009 Honda Civic when I would run the defroster during the winter my cab would fill with gasoline fumes. I would not recommend anyone use these, just buy an oil catch can off of Amazon and some rubber tubing if you don't want oil going into your intake.

[@rosemarieagapay6809]

Just asking if pcv vented to atmosphere will sucks air back to engine? Thanks guys!

[@krtolebiohazardcs1.681]

Rosemarie Agapay no.

[@Wilhuff_T]

PCV valve is a one way check valve.

[@Manlikewezzo]

What is that pipe connected to, under the filter you have on? It runs from the intake to under the cover, you point at it but Iv not heard anyone yet say what it is on here 😂😂🙌🙌 thanks for any help bro

[@HighBeams]

Yeah 😅 people don’t really talk about it, but I think what you’re talking about it’s called the intake resonator. It comes stock on these cars. Extra piping to bring in air I believe. Cold air intakes remove it completely tho

[@mohammedashraf2012]

it does work with 1.6 motors please advise

[@HighBeams]

+Mohammed Ashraf Yeah should work on a NA setup

[@Mr330d]

Do you ever notice smoke / Blow by coming from your filter?? On my diesel with pcv delete filter it Smokes

[@HighBeams]

Nope no smoke. Its been good so far, could be something else maybe

[@adamuberschaffenheiser8501]

I do it stinks smells of oil and fuel so I ran a hose under the car like the ac drip hose does it is an intense cabin smell with that breather nonsense filter.

[@farerse]

won't this breather type let gases out under the hood and possibly into the cabin fans ?

[@HighBeams]

Nope, the gases get trapped in the filter

[@cfq.tufanuf7601]

@@HighBeams did you remove the pcv valve and if so how did you attach the pipe to the crankcase? As before the pipe attached to the pcv valve

[@carlbrooks90]

Iv done the same thing with my trailblazer. No check engine light or anything.

[@HighBeams]

+Carl Br That's good to hear

[@carlbrooks90]

HighBeamsCrew and my engine doesn't have a pvc valve. Its a fixed orifice.

[@SavNout01]

Hope your rear main seal don't start leaking... That back pressure has to go somewhere

[@matthewnelson7211]

And would i need another tune for this? Tired of waiting for tunes

[@miralemnermina142]

you really don't need a tune for this

[@RobertKohut]

You only did a 1/2 PCV delete. In your example you only added a filter to the "clean" side of the PCV system. You need to find the line that goes from the other side of the throttle valve to the valve cover and remove and cap that. That line is the actual vacuum line and the filter you installed is only filtering air "drawn into" the crank case when the "vacuum line" sucks air out of the crank case. It should be easy to find. Just look for a line that is attached "after" the throttle valve, somewhere on the intake manifold, and goes to the valve cover. When this line is pulled off the valve cover there should be lots of suction when the engine is idling and should make the engine run rougher and might even stall. Then you will have a "PCV Delete" Right now you are still sucking in all the engine vapours like it came from the factory. The only thing you changed is where the "clean side" get's it's fresh air from.

[@HighBeams]

Damn, very interesting I never knew. You might be right, I'll look into this.

[@juanmoreira7008]

Robert Kohut show us how

[@RobertKohut]

Well I can't show you on this engine but if you watch my video the principle is the same.... kzbin.info/www/bejne/g5zTe4WiZZ2HhpY Just keep in mind that both the vacuum side and "clean" side need to be addressed to do a PCV delete.

[@ewergarcia6401]

What kind of intake you have ??

[@HighBeams]

K&N typhoon intake

[@AcappEd]

What about if u put another filter on the intake side instead of plug ?

[@Jacei9]

That will just create a vacuum leak

[@Jacei9]

That’s why you have to plug it

[@AJV4L2007]

Did this ever cause any issues or difference?

[@HighBeams]

No issues, helps with blowby apparently

[@robterza]

What air filter is that?

[@HighBeams]

K&N intake

[@jamesmwu4142]

I thought ur.pcv was by the alternator/belt..mmm😒

[@HighBeams]

Lol yeah, but not that one for this vid

[@matthewnelson7211]

Everyone talking down on this needs to think more about whats happening. On my car i hooked it up to my cai bc i dont think it makes a fuckin difference, but the blow by just goes into the intake and gums up my filter so why not run the breather hose down 👇 so the oil still gets caught

[@HighBeams]

Yeah exactly a lot of mixed reviews. Might as well run the blow by through the breather why not. No tune needed 👌🏾

[@seansmith4440]

Thats not your PCV

[@2zzlift989]

You well get oil on that breather soon

[@HighBeams]

Its been fine so far

[@sunitaswami8831]

@@HighBeams hjfm

[@sunitaswami8831]

@@HighBeams fatj

[@cuvame]

How about if you just let the old pcv tube dangle and let the vapor go in the air?? Will that b ok?

[@manuelillescas9387]

Absolutamente nada que ver con la valvula pcv

[@athaothao2880]

civic si k20 vented delete