[NMSVT]

Ok guys been awhile since I’ve posted. My truck is running ok with the engine that replaced my 10 second motor.

I say OK because my current engine has some nasty blowby and isn’t as fast as previous engine.

The part I need help with is with the PCV system. I’ve always had my valve covers connected to a catch Can and vent to atom. Well with this current engine and it’s blowby, I get all that smoke consisting of oil/fuel vapor coming out the cans…

my question is…
1. Can I connect the driver side valve cover to closed catch can (non vented can) then to my plenum port (whipple 2.9L) instead of the intake air tube post throttle body?

2. Can I just vent the passenger side valve cover? No smoking coming out from there. It does have a PCV valve. OR do I need to also plumb passenger side valve cover to whipple plenum?

3. With my current setup, when truck is ON and I open the Oil Fill cap I know have suction coming from passenger valve cover. Is that normal? When I had both valve covers vent to ATMO I did not have this suction/vacuum there.

4. Will i need a re-tune???

I know buy having the engine suck up all that shit and burn it my plenum, blower and IC will be coated with oil. Fuck it don’t matter to me anymore. I can always clean that stuff up.

Thoughts? remarks? thanks!

 

[Leeproctor83]

If vented on either side will require a toon.
I like mine vented because as you mentioned it keeps the I/C clean.

I only have a catch can on the passenger side andstill using stock PCV

 

[cbxer55]

I'm still usig the stock PCV with a catch can on the passenger side between the PCV valve and the plenum. Elbow on the back of the block deleted.

 

[Certified Drunk]

Get a couple catch can breather, mount one on each valve cover.
Use some an10 hose.
Moroso catch cans..

https://www.summitracing.com/parts/mor-85402

Metco makes some valve cover adapters...

AN Valve Cover Adapters

MBR0016-10AN
MBR0018-10AN

 

[cbxer55]

I never saw the point in putting one on the driver's side. The flow is into the engine from the elbow. What oil is there in that? Passenger side is outbound into the plenum through the PCV valve. Captain, there be oil here.

 

[NMSVT]

If vented on either side will require a toon.
I like mine vented because as you mentioned it keeps the I/C clean.

I only have a catch can on the passenger side andstill using stock PCV

Hey Kenny longtime no talk! Yes having it recirculate back into the engine makes a mess but I’d rather that than smell/see fuel vapors/oil mist while driving around.

 

[NMSVT]

Get a couple catch can breather, mount one on each valve cover.
Use some an10 hose.
Moroso catch cans..

https://www.summitracing.com/parts/mor-85402

Metco makes some valve cover adapters...

AN Valve Cover Adapters

MBR0016-10AN
MBR0018-10AN

Hey Marty thanks for the links but I have the catch cans covered. My real questions lye in my first post… I know you are super knowledgeable care to answer some of them? Thanks

 

[NMSVT]

I never saw the point in putting one on the driver's side. The flow is into the engine from the elbow. What oil is there in that? Passenger side is outbound into the plenum through the PCV valve. Captain, there be oil here.

My driver side valve cover is the one that fills my catch can way more than the passenger.

 

[Dusten]

My driver side valve cover is the one that fills my catch can way more than the passenger.

That's a pretty serious issue as the driver's side is supposed to be dry.

 

[cbxer55]

That's a pretty serious issue as the driver's side is supposed to be dry.

Yup, air is going in to the engine on the driver's side. Man, what must be happening if there is oil on that side? YIKES!!!

Before I put the oil separator on, when I did my MP and JLP plenum, my stock plenum was a mess. But forward of that, bone dry. My IC was a mess, couldn't see the sun through it. And being the boost gauge gets it's reading above the IC, I was getting false high boost pressure readings. Needle used to slam the peg on the top, even with the stock pulleys. Now, with a two pound lower and an upper that takes one back, I see nine pounds on the gauge, as it should be.

 

[Certified Drunk]

It's from the vacuum being so strong under throttle, it's pulling air/oil from the crankcase.
I had a breather in the drivers side valve cover. PCV / catch can in the passenger side.
I'll have to find the article on this and post it after work.

 

[cbxer55]

Aha! Makes sense to me now. Never thought that the vacuum in the intake would be so damn bad it would pull oil out of the engine on the wrong side. So far, I haven't seen traces of it in my intake, C & L elbow is clean inside last time I had it apart. But, it's definitely something to watch for.

 

[NMSVT]

That's a pretty serious issue as the driver's side is supposed to be dry.

Really? Care to explain why it would be an issue? Truck sounds and runs good other than the smoke out the cans/covers.

Driver side valve cover I get fuel vapor/oil mist. I run E85. Being sent to the catch can makes condensation and that's why I get it filled up even quicker.

Passenger side I get oil in catch can but not much.

 

[NMSVT]

It's from the vacuum being so strong under throttle, it's pulling air/oil from the crankcase.
I had a breather in the drivers side valve cover. PCV / catch can in the passenger side.
I'll have to find the article on this and post it after work.

Isn't that a good thing? I'm order to relieve crank case pressure under boost?

I'm amazed by the amount of vacuum the passenger side valve cover now has with routing the driver side valve cover back into the Whipple plenum.

 

[Dusten]

Really? Care to explain why it would be an issue? Truck sounds and runs good other than the smoke out the cans/covers.

Driver side valve cover I get fuel vapor/oil mist. I run E85. Being sent to the catch can makes condensation and that's why I get it filled up even quicker.

Passenger side I get oil in catch can but not much.

I run e85 and my catch can fills up too. But if I pull the driver's hose it's bone dry.

 

[NMSVT]

I run e85 and my catch can fills up too. But if I pull the driver's hose it's bone dry.

I would believe because it's getting sucked dry by the engine/vacuum.

How i had mine setup up before (couple days ago) i had the driver's side VC nipple to a catch can then vent to ATMO. That's why it was getting all that shit smoking under the hood. It would accumulate everything that is supposed to be burnt off by the engine.

Is your driver side valve cover plumbed to your intake elbow or plenum? Does it matter? That was one of my questions. I wouldn't think so?? (post or after throttle body)

 

[cbxer55]

Driver side valve cover is plumbed to the intake elbow. Passenger side exhausts to the plenum.

 

[DebtLife Projects]

Is your driver side valve cover plumbed to your intake elbow or plenum? Does it matter? That was one of my questions. I wouldn't think so?? (post or after throttle body)

I was told is does matter and needs to be before the throttle body, that way when the throttle blade is closed/partially closed at idle, the air can enter the drivers side valve cover and circulate/work as it should.

 

[kirk]

It's considered previously metered air, so it should re-enter between the tb & maf

 

[Certified Drunk]

You’re over thinking this…, keep it simple.
Put a breather in the drivers side valve cover.
Put a PCV valve in the passenger side valve cover > catch can > Plenum.
Larger the hose will slow the velocity and the oil will return to droplets.
You will need a tune for the unmetered air.
A stock system works good on a stock engine, you’re far from stock.

Marty