Sr20det Valve cover "T" Breather filter or not to breather filter!!!!

[rb25_s13*CHUKI]

I'm making a custom hard pipe for the turbo Inlet as we speak and was wondering if people have had any good experience with running a mini breather filter on the left side of the valve cover "T". I wanna know before I complete the pipe if I should make a bung on the pipe for the hose to hook up to!

[rc1honda]

I think the problem most people run it to with the filter is when it clogs. If you are pushing a lot of boost you are going to get some degree of blow-by. When the filter clogs with oil it can cause serious running problems or even damage to the motor.

If you are going to stay stock the filter is just fine. If you are pushing 14lbs or over I would get a can setup to handle any potential blow-by issues and also to complete the vacuum circuit.

[rb25_s13*CHUKI]

I think the problem most people run it to with the filter is when it clogs. If you are pushing a lot of boost you are going to get some degree of blow-by. When the filter clogs with oil it can cause serious running problems or even damage to the motor.

If you are going to stay stock the filter is just fine. If you are pushing 14lbs or over I would get a can setup to handle any potential blow-by issues and also to complete the vacuum circuit.

So I should be good I'm only boosting 12 psi spike n 10 till redline. Thanks for the Info! I have a catch can where the stock catch can would be running.

[ultimateirving]

I replied in your other thread, please read.

[rb25_s13*CHUKI]

I replied in your other thread, please read.

Just did and thanks! :bigok::bigok:

[EsChassisLove]

Get a legit catch can with good baffling and a oil level reader and route it back to the intake. It's designed to work like that.

If you have a good catch can and a healthy engine then you won't ever see oil in your intake/turbo/pipes.

Put a catch can between the left side of the T and the intake. You will be golden. You can egen get away eith deleting the shitty stock catch can if you have a good one on the other side.

[rb25_s13*CHUKI]

Get a legit catch can with good baffling and a oil level reader and route it back to the intake. It's designed to work like that.

If you have a good catch can and a healthy engine then you won't ever see oil in your intake/turbo/pipes.

Put a catch can between the left side of the T and the intake. You will be golden. You can egen get away eith deleting the shitty stock catch can if you have a good one on the other side.

I have a circuit sports catch can on the right side of the T but I'm running a lil filter on the left side of the T now. I'ma pick up a legit catch can and make a setup for the left side of the T.

I noticed now the car will sometimes idle super low after pushing it hard since i put the mini filter. I think I'ma run the stock intake tube until I get the set up right

[EsChassisLove]

Yea man, ever notice your idle kinda dip a little bit then level out also? That's cuz its not completing the vaccuum.

I'm in the process of buying a new can. I opened it up and its empty. Eff that.

There's a guy on here than sells custom cans with good baffling. Decently inexpensive also

[Howie Felter Snatch]

IMO: Breather = Crap :facepalm:

Route it correctly so you can maintain a VACUUM within your crankcase.. Else at best you'll be getting atmospheric pressure by using a breather. Not to mention they get clogged from oil / oil vapors and start dripping oil. Which could also potentially cause a fire.

Give the engineers at Nissan some credit here and understand why the crankcase ventilation system is connected as is.. Just put a high quality, BAFFLED catch can between the left side of the 'T' and the intake pipe to keep everything clean (e.g. intercooler, intake, etc..)

I've actually cut a stock S13 SR catch can in half to see what's inside/what it does, and it is actually a well engineered piece with angled baffles to allow oil vapors to accumulate and then drain back down to the sump.. A lot of people just dismiss it as crap and don't even stop for one second to understand/see what its doing..

Whatever you do, just make intelligent choices and think about stuff before just listening to the first thing you hear someone say or do on an internet forum..


If you're looking for a good baffled catch can, stay away from Greddy, Cusco, SARD and other empty styled catch cans.. They're not doing much to collect and trap oil vapors, unless you modify them and add steel wool or baffles yourself.

Here's a good example of a well engineered catch can: http://www.saikoumichi.com/OCC_explanation.htm

There are others out there, you just have to research a little bit.

Goodluck!

[Howie Felter Snatch]

I noticed now the car will sometimes idle super low after pushing it hard since i put the mini filter. I think I'ma run the stock intake tube until I get the set up right

That's bad.. I believe you're making the engine work harder to push out the built up crankcase gasses when your running it hard and then the missing vacuum is throwing stuff off. Take that p.o.s. breather off and put the hose back on for now.. :D

[rb25_s13*CHUKI]

That's bad.. I believe you're making the engine work harder to push out the built up crankcase gasses when your running it hard and then the missing vacuum is throwing stuff off. Take that p.o.s. breather off and put the hose back on for now.. :D

Yea i only drove it for one trip to pick up my girl before I put the stock Intake tube back on, Not down to run the car that way.

[rb25_s13*CHUKI]

IMO: Breather = Crap :facepalm:

Route it correctly so you can maintain a VACUUM within your crankcase.. Else at best you'll be getting atmospheric pressure by using a breather. Not to mention they get clogged from oil / oil vapors and start dripping oil. Which could also potentially cause a fire.

Give the engineers at Nissan some credit here and understand why the crankcase ventilation system is connected as is.. Just put a high quality, BAFFLED catch can between the left side of the 'T' and the intake pipe to keep everything clean (e.g. intercooler, intake, etc..)

I've actually cut a stock S13 SR catch can in half to see what's inside/what it does, and it is actually a well engineered piece with angled baffles to allow oil vapors to accumulate and then drain back down to the sump.. A lot of people just dismiss it as crap and don't even stop for one second to understand/see what its doing..

Whatever you do, just make intelligent choices and think about stuff before just listening to the first thing you hear someone say or do on an internet forum..


If you're looking for a good baffled catch can, stay away from Greddy, Cusco, SARD and other empty styled catch cans.. They're not doing much to collect and trap oil vapors, unless you modify them and add steel wool or baffles yourself.

Here's a good example of a well engineered catch can: Saikou Michi OCC Explanation (http://www.saikoumichi.com/OCC_explanation.htm)

There are others out there, you just have to research a little bit.

Goodluck!

Yea thanks for the Info, I just got curious and had some pipes laying around and got tired of looking at the crappy rubber tube but I ran it with the mini filter for 1 trip and it was messing the idle so when I got home I put the stock back on. All is good till I get the proper setup:w00t:

[EsChassisLove]

That's a great diagram of a legit can. I want it. NOAW.

[codyace]

Ultimate Catch Can Thread

If not

Factory Oil/Air Sperator and a catch can on the front of the T.

Too easy. As an ex premie you should fuckin knowbetter.

[Howie Felter Snatch]

Yea thanks for the Info, I just got curious and had some pipes laying around and got tired of looking at the crappy rubber tube but I ran it with the mini filter for 1 trip and it was messing the idle so when I got home I put the stock back on. All is good till I get the proper setup:w00t:

No problem man. Yeah you will be fine, especially because you ran it for such a short time. Regardless, I'm glad you're going with a correct approach. That's AWESOME! :boink:



That's a great diagram of a legit can. I want it. NOAW.

Yeah! :) You can check out their Catch Can offerings at their main page: Saikou Michi Oil Catch Tank Company (http://www.saikoumichi.com/)

[Om1kron]

Ultimate Catch Can Thread

If not

Factory Oil/Air Sperator and a catch can on the front of the T.

Too easy. As an ex premie you should fuckin knowbetter.

You mean the guy who has been building engines since he was fucking 7 years old? Yeah right, love seeing threads like this from fucking know it all's. :down:

[rb25_s13*CHUKI]

You mean the guy who has been building engines since he was fucking 7 years old? Yeah right, love seeing threads like this from fucking know it all's. :down:


I knew my answers but its always good getting second opinions, I've been getting tired of running the return in the pipes all the time. I've ran it every time in the intake pipe I've never done an all out build. I made a bung on the damn Intake tube with my gt30 setup a couple years back.

I've never done the fancy valve cover or ran multiple catch cans. Always simple and basic but still made tons of power and reliable engines. Its always been straight to the point, Except this time I'm on a super tight budget and don't have much to work with.

I also see that you are still on my nuts and Just can't stop hugging them! Please get of my nuts they are sore already, just the little nagging bitch as always. Then you complain to the mods for me posting on ur personal wall. haha what a cry baby!

[rb25_s13*CHUKI]

Ultimate Catch Can Thread

If not

Factory Oil/Air Sperator and a catch can on the front of the T.

Too easy. As an ex premie you should fuckin knowbetter.

Just getting second opinions and trying things on a budget as I don't have the cash I once did to build my cars. Nothing wrong with trying things I've never tried such as running no hose to the intake pipe and leaving it open. One of those hot boring days you try something stupid, we've all had these days

[codyace]

I've never done the fancy valve cover or ran multiple catch cans. Always simple and basic but still made tons of power and reliable engines. Its always been straight to the point, Except this time I'm on a super tight budget and don't have much to work with.


Pro-tip: If you have a super tight budgetr you shouldn't be modding cars at all.

Nothing against second opinions, but why trust forum folklore over something you already 'know' the answer to?


J One of those hot boring days you try something stupid, we've all had these days

No, I've never seen days like that...I work hard for my money, spending it needlessly on half assed mods or wasting brain power on kooky ideas only pisses me off. As the old saying goes 'saving Pennies makes you spend dimes'.

[mct3351]

If you run a breather filter on the T be sure to block off the PCV valve and the intake manifold port for the PCV valve. If you dont you'll be getting unmetered air when the intake manifold is at a vaccum.

[rb25_s13*CHUKI]

Pro-tip: If you have a super tight budgetr you shouldn't be modding cars at all.

Nothing against second opinions, but why trust forum folklore over something you already 'know' the answer to?




No, I've never seen days like that...I work hard for my money, spending it needlessly on half assed mods or wasting brain power on kooky ideas only pisses me off. As the old saying goes 'saving Pennies makes you spend dimes'.

All minds don't think the same

Just because on a budget doesn't meant u can't mod a car I put together a full running sr20,z32 brakes,coilovers,diff,clean seats and dash for under 2k. Gotta find the right people selling the right parts and the right price.

[bladetech8]

^ That definitely helps a lot! :wan:

[s14unimog]

Get a legit catch can with good baffling and a oil level reader and route it back to the intake. It's designed to work like that. If you have a good catch can and a healthy engine then you won't ever see oil in your intake/turbo/pipes.Put a catch can between the left side of the T and the intake. You will be golden. You can egen get away eith deleting the shitty stock catch can if you have a good one on the other side.

You were doing so well until you got here... That oil/vapor separator is not shitty, it actually works quite well but is inconveniently placed for aftermarket manifold/turbo setups. Don't put down something that received more engineering time than your entire build; not to mention there is more to that entire assembly than you're giving credit (ever looked inside the factory line?). Otherwise, I agree with what you said before that.

I have a circuit sports catch can on the right side of the T but I'm running a lil filter on the left side of the T now. I'ma pick up a legit catch can and make a setup for the left side of the T.
I noticed now the car will sometimes idle super low after pushing it hard since i put the mini filter. I think I'ma run the stock intake tube until I get the set up right

that's b/c its leaning out from un-metered air entering through that little filter.

If you run a breather filter on the T be sure to block off the PCV valve and the intake manifold port for the PCV valve. If you dont you'll be getting unmetered air when the intake manifold is at a vaccum.

Damn, you beat me to it. x2