PCV Delete and Catch Can Install for LS Turbo Silverado

In this episode I delete the PCV system from my 2000 Chev Silverado Turbo and install a catch can to capture oil and blowby from the crankcase.

[@grominwithrob1339]

Putting the filter on the top of the manifold is going to bring in unmetered air. That could complicate tuning. Of course with that build, you would be better off tuning with speed density. Really sweet build. HP Tuners is a must for literally anyone. If they support your vehicle, you should buy it. 😂

[@brianlutzak]

take the breather off the dirty side and run it to the catch can and the clean side to the catch can. you are probably going to get an oily engine bay with the setup you have going as the air coming out of the driver's side is the side with the oil/air mix you are trying to eliminate.

[@LowbuckLS]

I do plan on installing a catch can on the driver’s side as well. One thing I don’t understand though, I’m sure you are right, but why is one side of the engine dirtier than the other? If all of the cylinders are in similar condition shouldn’t the amount of blow by be the same on both sides?

[@brianlutzak]

@@LowbuckLS I'm not 100% sure but I think it has something to do with the baffling in the valve covers and the way GM designed it. It could also just be a distinction in terms referencing which direction the oily air is pulled from and the "purified" air enters.

[@bashtheslash9083]

@@LowbuckLS The "dirty" side is where the crankcase gasses exit and get recycled back into the intake. The "clean" side (passenger side) draws in fresh air from the intake tube usually. Love your videos! Keep up the great work. 👍

[@MusicConnoisseurian]

@@LowbuckLS The clean side is pulling air into the engine ahead of the throttle at idle. When the throttle opens, the pvc valve opens also and allows the gases, vapors, etc.. to be sucked thru this line by the intake instead. "MrDIYer" has a very good video on PVC system.

[@CorEdmonds]

I owned a 95 turbo Talon and they had a pvc system that had a check valve that sealed the vacumn side when the boost kicked in. The talon also had a vacumn tube (bung for vacumn hose) on the intake pipe before the turbo's Inlet (right after the air filter) . That allows for maximum crankcase ventilation while in boost mode!

[@reubenmorris487]

I had a 94 Base model that I turbo swapped. Under boost the car would just push oil into the turbo (or catch can if you had one) and anywhere else you didn't seal up well. I eventually blew oil past the rear main seal gasket, blew the dip stick out, and a few other places. The PCV on those cars only seemed to work when OFF boost.

[@CorEdmonds]

@@reubenmorris487 That is exactly what was supposed to happen because the same vacuum port used for the PVC system will become pressurized when the boost pressure ramps up. The PVC system will always need to be connected right after the air filter piping and before the forced induction (turbo/supercharger). When the turbo starts to really pull a bunch of air through it the PCV will then have vacuum.

[@humbertourias69]

@@reubenmorris487 I just have that problem I turbo my car and I can't get rid of the smoke from the crank case I put an oil catch can from the valve cover to the filter on the turbo and make the turbo smoke

[@lylegoodluck]

​@@CorEdmondsyour comment made me think. I boosted my 5.3 and won't idol smooth. I have my fresh air side vented. I'm gonna try and get it plumbed between my air filter and centrifugal supercharger.. I hope that fixes my issue! Thank you!

[@Cert.Backyardbs]

@@lylegoodluckany updates? I have a turbo charged 4.3 s10 and am having a rough idle after disconnecting the vent from valve cover to intake (in between throttle body and charge pipe) but I called it off should it just run fine?

[@guitargod66]

Randy I just wanted to say thank you seriously for your channel and doing all these videos. Literally everything I google search comes back to a video on your channel and helps me with my current build. Thanks really isn't enough!!

[@LowbuckLS]

LS Graveyard thanks sir, glad your finding the videos helpful!

[@carlodonnell146]

Is it necessary to delete the PCV valve when using a catch-can, or can the PCV work along with the catch-can?

[@aussieaeromodeler]

nice job , I just installed the same unit on my 2000 AU2 ford ute (I'm in Australia) , reason I fitted the catch can was to eliminate carbon and oil residue build up in the throttle body , plenum chamber and inlet valves . My vehicle isnt turbo chanrged so I used the existing PCV arrangement , but with the catch can between the PCV valve and the manifold inlet , I used the same method as you for the filter on the fresh air inlet on the valve cover . I have also put a stainless steel pot scrubber inside the catch can to give the vapor something to condense on , system works extremely well

[@drewrodriguez6032]

Way better then other videos I seen on installing oil catch cans .

[@v.e.7236]

All you needed on the passanger side was an air diverter valve - like one-way vacuum port to keep air from moving opposite to the direction desired. No more boost into the valve cover. Also, if you had a three-port catch can you would be able to run the passanger valve cover and the PCV running into one can. You don't need two catch cans. smh

[@canadapainter658]

this is a straight forward video easy to understand,,,thanks,,, other videos are garbage you got an UP from me,,, finally I can say that..

[@auto3garage522]

Hopefully this sort my issue mine keep blowing oil and so hard to tell

[@samschiller1453]

couldnt you just run both valve covers to one catch can?

[@LowbuckLS]

Sam Schiller yes you could

[@CouchHam]

Is there a 2nd video showing how well this works??

[@StationroadRatrods]

Yet again, I search for info and Randy has a video on it 😁

[@LowbuckLS]

@@StationroadRatrods appreciate ya Barry!

[@StationroadRatrods]

@@LowbuckLS how’s your summer going?

[@LowbuckLS]

@@StationroadRatrods pretty busy working, but still trying to fit in a bit of LS related stuff. Want to get back into putting out videos regularly.

[@StationroadRatrods]

@@LowbuckLS I understand you there. I’ve been doing renovations flat out all summer and it’s hard to keep up with it all. I wish you the best!

[@calvin4374]

Also, did the PCV delete (with the same amazon Breather), in an effort to relieve crankcase pressure. I still have oil, in the exact same location. I am interested in alleviating this issue, too.

[@LowbuckLS]

Hmm I was hoping this would solve that issue, will have to keep an eye on it. Seems to be working ok for me so far but I haven’t turned it up much yet.

[@LowbuckLS]

One other thought, have you checked your compression or done a leak down test? Maybe your engine has excessive blow by under boost which is causing high crankcase pressure?

[@calvin4374]

@@LowbuckLS I should check that. I did the rebuild the motor and gapped the rings for boost over the winter. I thought I fixed it with it the breathers, but in fact blow out front crank seal and was relieving the pressure there. But, no oil at the dipstick. After resealing the crank seal, oil was back on the firewall and right rear of the block. I have been chasing my tail. Still driving it, though.

[@sxs4l245]

Maybe a larger catch can guy's? I know on the turbo systems I have worked on had VERY LARGE catch cans. Or an expansion can to catch can, just my 2 cents....

[@randyrichardson4364]

thanks for another video. please update on how well this works.

[@LowbuckLS]

Will do, so far it’s working well at low boost levels.

[@traviskampe9712]

So is this getting rid of the crankcase pressure? I have a naturally aspirated motor with higher compression and it is making to much crankcase pressure

[@pyropyro1738]

Same I have a 6.0ls high compression and the pcv is shooting a lot of smoke and smells idk if I should just plug it up

[@lawrencedeaninvestments2171]

He That seems like a good way I ran both valve covers to a Y and then went to that same CATCH CAN and with the filter on top then I ran the other hose the out back to the throttlebody and I think the throttlebody pushes air out because I kept getting like a milky substance this is when it was very cold weather to I just thought I’d share what happened to me with that same can and how I had it set up different your set up is more right don’t run it back into the engine but watch out for cold weather

[@rafezora8524]

Did you know that PCV are one way??

[@squarebodyseth5986]

Did you know that because they are 1 way they dont work when the intake has positive pressure.

[@deadsiri-ous4534]

Did he remove the PCV valve from the driver side before putting his breather on? I am running tall valve covers on my 5.3 and need to run a catch can now also..

[@ismaelcarrillo3956]

They make flow check valves for hoses to allow air only one way

[@jimmydondero1912]

I hurd u can not pug outlet..were did u see that you can would love to read that...and could the plugged outlet be another inlet for other valve cover ..or does it push out there

[@JINO187]

Im late to the party but how did this go for you??

[@jche64]

Completely and safely eliminates the issues of blow by. Why don't they send them out of the factory this way?

[@Hilth0Modding]

Emissions

[@bertvisser6423]

I could also just run a hose from the valve cover down to below the engine and let it vape off there right? Can't see anything wrong with that. I hate that they run it into the intake,and combined with egr messing up the intake.

[@codyhertel2765]

Absolutely can I've done it to a car of mine. The epa frowns on it but it won't hurt the engine at all

[@TheSaxon25]

Haha. Aw yes. The good ol draft tube. I'm into it!! 🍻

[@submariner144]

​@@codyhertel2765i read that you still need vacuum to exit the crankcase fumes.

[@FAFO1984]

Why not put a check valve in the Hose from Valve cover to TB?

[@LowbuckLS]

That would work too, my concern was the check valve could have sludge build up in it and stop working. This way I know for sure there is no way for boost to get from the TB to the crankcase except via blow by.

[@FAFO1984]

@@LowbuckLS Makes sense.

[@speedydry]

The existing pcv is a check valve. The pressure in the TB prevents the pressure in crankcase from venting into the TB, so the pcv circuit is effectively blocked. By removing the pcv, this is like the olden days with an open crankcase. Filter on catch can keeps oil mist mostly contained. Governments don’t like this unrestricted system. Good maintenance keeps emissions in check.

[@cesarleon8851]

Can u do this to a normal 5.3 lm7 N/A with no cam ?

[@ChrisTheMobileMechanic]

Im gonna weld a -12 to the timing cover and run -12 an hose to a catch can along with the valve cover ports to make catch can venting to atmosphere.

[@ChrisTheMobileMechanic]

I run the same setup on my 700hp turbo 4g63t Gsx eclipse. (12an off back of block not timing cover, and 2 -10an off valve cover)

[@LowbuckLS]

Gsx_Chris88 that should work well. I might end up doing something similar if these lines aren’t big enough

[@4x4Productionz]

whats the point of the catch can if its not going to separate oil in the intake?

[@brracing6287]

Did you ever have any problem with oil blowing out filter on catch can? I'm only running 8psi and it's blowing oil out filter on catch can

[@treypoppi4804]

Do you know if I’m suppose to remove my pcv valve when installing these

[@juans-life]

I want to run my catch can on left side but from valve cover to catch can to throttle body. Non turbo cammed 5.3 can i run a breather on the other side like your setup? PCV confuses me haha. thanks for the video

[@ty.rodriguez]

if you're gonna run a breather, it should only be one that leads from the valve cover to the catch can, nothing to the intake, unmetered air coming into the engine

[@Boostededdy]

I see you have a coolant res tank and the overflow tank as well, wheres is the res connected to?

[@Krosstikable]

Curious if this caused engine issues like most PCV deletes do...

[@squarebodyseth5986]

Pcv deletes dont cause engine issues.

[@richardeddings7259]

I thought that was the clean side don't you want to run the catch can on the

[@dylanmoreno3749]

Could I do the same thing that you did on the passenger side with the driver side valve cover ??

[@LowbuckLS]

Dylan Moreno yes that would work

[@dylanmoreno3749]

Do have a link by chance

[@mattross1334]

Hey how did this catch can setup do during higher levels of boost?

[@LowbuckLS]

Matt Ross it’s working fine so far but haven’t turned the boost up past 15psi yet, been running at 10-15 with no issues though.

[@snivesz32]

That’s not the correct way to plumb a boosted engine, you will end up with the “forbidden milkshake” in your oil pan from not adequately removing moisture from the oil. Also your truck will smell pretty bad with oil fumes, not to mention polluting the air. I’ve plumbed plenty of turbo engines and retained the pcv as well, they work great, no oil burning smells no hacky install, very pro.

[@makomako5301]

It didn't look correct to me either. Especially just the breather on the valve cover. Can u tell us the correct routing? Thx in advance

[@comaradelee]

i have 5.3l vortec non turbo. can i do this with NA?

[@LowbuckLS]

@@comaradelee you can but it’s not really necessary with an NA vehicle, it’s when you pressurize the intake with boost that the stock configuration causes problems.

[@comaradelee]

@@LowbuckLS thank you sir.

[@artquintero5654]

What’s the part number for that catch can?

[@canadapainter658]

what did you use for 9:16? did you put the PCV housing back and topped it with a breather? what if the PCV stuck closed???

[@miguelg3537]

Could I use it for carb ?

[@flexo.__]

Link To Catch Can ?

[@Zslowzr1]

No you only have a breather and no vacuum supply to evacuate the blow by...Why not just use the catch can in place with the current PCV system? Then you have a vent when the crank is boosted and still have flow of the gasses in and out of the crankcase.

[@CorEdmonds]

The vacumn line that is supposed to suck crank case gases will then become pressurized when the boost kicks in. That will cause the crank case to blow oil out the dipstick, rear main seal, front balancer seal etc.

[@submariner144]

​@@CorEdmondsPCV is one way, it will not pressurize the crankcase because there is no way the pressure can go through the PCV.

[@CorEdmonds]

You have to look up a PCV for an original equipped turbo car such as a 96 turbo eclipse.

[@CorEdmonds]

Or you can vent your pvc to the " Before Turbo" part of your intake piping. Then it will pull your crankcase gases in especially at high boost!

[@submariner144]

@@CorEdmonds but it'll be bad for the turbo blade right? I still use the PCV delete setup. PCV removed, vented to oil catch can and plugged intake hole. But i wonder is it dangerous for the engine since there is no vacuum to pull the vapor out? You also tried this setup right? Any bad experience so far?

[@rigweldernomad932]

How did it work?

[@LowbuckLS]

It's working great so far.

[@davek556]

👍👍

[@sxs4l245]

Get cha some hose and a t bud. So it don't spray all over on the driver side. Run it over and t em together closer to the catch can. Yee Yee!

[@LowbuckLS]

Good idea. If it starts making a mess on the drivers side I’ll do that. So far it’s been ok though but haven’t turned it up much.

[@sxs4l245]

I think engine size also plays into this whole senario of ventilation. Smaller engines are smaller so it takes more outside volume to catch that mess....it's a big v8 with lots of case room so it may work well for you. Looks like a fun pickup man! I just love the "LS" world..... Good luck!

[@kyleallen3857]

If you find yourself using the words, “I think...”, you need to back-up and reconsider doing the video Just a thought

[@jacobstienecker]

That’s not a LS. It’s a vortec 🙄

[@scottlavoie2363]

Please tell me you're not serious.. 😬

[@laned8418]

What kind of power are you making

[@LowbuckLS]

Pretty conservative for now, haven’t dynoed it but maybe 500 wheel. Once I upgrade the transmission I can turn it up more