PCV talk

lamia2super

Corporal
Dec 3, 2016
103
27
0
Miami, FL
Ride
2007 BMW 335i & 2016 Tacoma
so how is everyone handling the crank case pressure ?

Ive seen a few people run rb with a additional OCC for high and low pressure sides...

whats the benefit to running the RB external kit vs buying the ADE(or other) fittings for a fraction of the price

I have two mishimoto OCC sitting around and I'm trying to figure out the best route to go

picture is just for fun
33040795025_2d387de903.jpg
 
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lamia2super

Corporal
Dec 3, 2016
103
27
0
Miami, FL
Ride
2007 BMW 335i & 2016 Tacoma
What is the ideal setup for a single turbo car?

thats what im trying to find out and from what ive read everyone likes the rb external pvc kit...my ideal setup would include a billet valve cover :rolleyes: + billet intake mani
 

Bme30

Lurker
Nov 28, 2016
19
10
0
Florida
I just don't want to run 2 catch cans. Is there a way to get all this done and run a single 3 port catch can??
 
Feb 19, 2017
25
8
0
Ride
335i
Just picked up the RB on BMS... hoping to have it installed with my BMS catch. Anyone know any install videos running around for my specific setup?
 

08_335i

Sergeant
Nov 3, 2016
372
217
0
28
Ride
2008 ST 335i
The flapper valve is there for a reason, and its not emissions. So deleting it, or VTA, IMO and another highly respected engineer on this platform, is a bad call. The best setup is a high side catch can in between the ST and flapper valve. And then tapping the ports with a low side catch can. Were not talking 7psi and 300hp anymore folks, this [email protected] starts to matter to be done right at our high power outputs.
 

1and1

Specialist
Dec 28, 2016
60
34
0
Tally, FL
Following for the knowledge and had no intention of contributing- still, just had to pop in and offer a heartfelt "Thanks!" to whomever corrected the thread title :)
 

Velocity26

Specialist
Feb 7, 2017
61
21
0
Tampa, FL
Ride
2010 335i
The flapper valve is there for a reason, and its not emissions. So deleting it, or VTA, IMO and another highly respected engineer on this platform, is a bad call. The best setup is a high side catch can in between the ST and flapper valve. And then tapping the ports with a low side catch can. Were not talking 7psi and 300hp anymore folks, this [email protected] starts to matter to be done right at our high power outputs.

You are correct, the flapper is there for a reason. Under low load the flapper is closed and the PCV valve is operating and pulling air out of the crankcase at a metered flow. The flapper has a small orifice that allows air in so that there is never a complete seal and the crankcase cannot be pulled down to the same vacuum as in the intake manifold.

Under high load (boost) there is no vacuum to keep the flapper closed, so it pops open and allows a ~3/4" passageway for gasses to escape without building excessive back-pressure in the crankcase. You need the ability to flow a significant amount of air to keep pressure from building up in the crankcase, that is the reason that a BMS can is the choice. It had large fittings and can flow a large amount of air without restricting the flow. It is not perfect, but it flows better than any other that I am aware of.
 

mkster08

Corporal
Nov 5, 2016
107
19
0
Kansas
If you want to vta, you can leave flapper there, run a heater hose off the end of it, route it wherever you want and put a crankcase breather filter on the end of the hose, I have mine routed to wheel well
 

Velocity26

Specialist
Feb 7, 2017
61
21
0
Tampa, FL
Ride
2010 335i
I wonder how beneficial the PCV system is in reducing oil leaks? How many folks have removed the PCV system entirely, and gone full VTA, long term and what have the results been? I know that I had to fix several oil leaks (Oil filter housing and valve cover gasket) long before 50k miles. Thankfully the dealer did the VCG under warranty but I paid my mechanic to do the OFHG when doing the valve cleaning. Someday I may have to face the pan gasket myself too.
 

_mpreza

Lurker
Dec 11, 2016
17
4
0
Now thats full on!
Lots of time and effort there dude,
its something to be proud of!!
Luv It:)