with or without a PCV valve

[Iyaoyas]

Can you just get ride of the PCV valve? I have allready removed my EGR and Evap system. There is still a breather on the valve cover so it will still beable to vent. If someone knows why/why not i should do this please inform me.

 

[snowborder714]

Not recommended.
http://www.dsmtuners.com/forums/articles-engine-fuel/366890-4g63t-pcv-system.html

 

[DSM1G90]

Do you like replacing main crank seals due to excessive blowby pressure in the crankcase?

 

[primo513]

You basically are getting rid of the pcv vacuum line when you use a catch can with a breather on it

 

[project98dsm]

Never had a problem with deleting PCV system. Vented catch can with feed/return from valve cover via -8an pushlock fittings.

 

[Boosted187]

I have always ran an open filter type catch can and no PCV with no issues.

 

[DSM1G90]

Looks like the poor ol' plain and simple PCV valve itself is an enemy to the 4G63 setup where it's really a life saver to the system- it's not harming anything, nor taking away any power, but removing it is like calling the engineers who designed it and having it in the system, "ignorant and not smart enough for their knowledge applications".

Sure, removing it may does well work, with the added catch cans and such (which I do agree these units needs to be in the system to remove the cruddy goo that resides in the exhaust stream), but removing it really helping the system?

Just my wonders since I'm keeping mine intact in place and that is what's important to me and my DSM.

-DSM

 

[Joethefallen23]

Buy a brand new pcv, throw a US Plastics 3/8 checkvalve in and call it a day. You'll never have a boost leak past the pcv again, all the while keeping its all important function....or you can delete it and watch as excessive crankcase pressure slowly destroys every seal in that tired old motor.

Sealed, baffled catchcans are the way to go.

 

[WES_393]

Eliminating the PCV valve properly (as shown in the PCV system thread) will only reduce ventilation during idle and cruise. It will improve ventilation during WOT conditions (boost) since both the valve cover ports are relieving pressure.

 

[4G63_fiend]

I recently heard the PCV with catch can is not only good for venting/ relieving pressure, but also help with power numbers while doing so. I recently met a local DSMer here locally, and he turned me onto the idea. My current DSM came with a little filter in place of the tube. I never really gave it much thought, but keeping the set up makes sense! Even vehicles that are N/A benefit, much less a turbo application. Yes we all hate the oily residue that accumulates, if you install a catch can, then route the return back to the intake it will eliminate that nasty mess. Re-routing the PCV back to the valve cover after the catch can doesn't really make much sense considering it will just be pushing the gasses back to the engine. Where putting the return line back to the intake side can only help air flow. Sure it won't be a huge upgrade for those that chose to remove it, every little bit counts! The local guy I was speaking with about this has been in the DSM scene for more than 10 years, and has a proven 91.5 Laser that makes over 600hp! Just thought I would add my 2 Cents!