[ItalianStallion]

Does anyone know if you can install the radium PCV valve on the mountune breather plate. (the updated UK one specifically)? The reason I ask is because it seems like, for the reasons OP mentioned in his post where stock breather plate looks to be more effective than the aftermarket mountune USA plate thus why mountune UK updated theirs to the V2 version, the radium plate looks very similar.
In the pictures below, the mountune US and radium plates just have those thin open baffles, where the mountune UK has an enclosed labyrinth style of baffles. Where the radium plate shines is its upgraded PCV valve. Both of the mountune plates require you to reuse the OEM blue PCV valve. Radium sells their PCV valve separately, and I'm curious if there is a way to get that valve to work with the mountune UK plate?

Mountune USA:

Radium:

Mountune UK:

Radium PCV valve:

 

[SenderPiggins]

@ItalianStallion Not as is. You'd have to tap the oem fitting, but not sure there's enough material to do it.

For mountune v2 they have the two other ports on the sides. You could use those.

 

[nicklulu]

@ItalianStallion Not as is. You'd have to tap the oem fitting, but not sure there's enough material to do it.

For mountune v2 they have the two other ports on the sides. You could use those.

And you need to plug the one on the top.

The one on each sides would not go through the "labyrinth" though (or at least one of them won't).

 

[Pezzar]

The issue here is the stock PCV valve works at the breather plate level, this does not stop boost entering the catch can and pressurising it and that is where the real issue lies.
I have gutted my PCV valve to improve flow (below)

and am fitting a UPR upgraded check valve (below) on the clean side of the pcv catch can piping (line to the inlet manifold). This prevents on boost pressurising the pcv can.

UPR 100psi Upgraded Checkvalve (Recommended for Catchcan)

YOU MUST MEASURE YOUR HOSE BEFORE ORDERING! This is a necessary upgrade to your UPR catch can system if you are running over 22psi. The included checkvalve in the UPR kits work great but overtime can break down and fail to hold boost from entering the catch can. We have found it a great upgrade...

www.tuneplusinc.com

Similar issues found with the EB mustang and this is the fix they use.

 

[BigFatFlip]

The issue here is the stock PCV valve works at the breather plate level, this does not stop boost entering the catch can and pressurising it and that is where the real issue lies.
I have gutted my PCV valve to improve flow (below) and am fitting a UPR upgraded check valve (below) on the clean side of the pcv catch can piping (line to the inlet manifold). This prevents on boost pressurising the pcv can.

Similar issues found with the EB mustang and this is the fix they use.

Interesting... I actually have both on there now (stock PCV valve and UPR check valve). Notice anything different?

 

[Pezzar]

Interesting... I actually have both on there now (stock PCV valve and UPR check valve).

Yes, so do I, except my stock pcv has no internals

Notice anything different?

Too early to tell yet will update soon, but mustang dudes had very good results with this

 

[lucky phil]

The issue here is the stock PCV valve works at the breather plate level, this does not stop boost entering the catch can and pressurising it and that is where the real issue lies.
I have gutted my PCV valve to improve flow (below)

View attachment 349997

and am fitting a UPR upgraded check valve (below) on the clean side of the pcv catch can piping (line to the inlet manifold). This prevents on boost pressurising the pcv can.

UPR 100psi Upgraded Checkvalve (Recommended for Catchcan)

YOU MUST MEASURE YOUR HOSE BEFORE ORDERING! This is a necessary upgrade to your UPR catch can system if you are running over 22psi. The included checkvalve in the UPR kits work great but overtime can break down and fail to hold boost from entering the catch can. We have found it a great upgrade...

www.tuneplusinc.com

Similar issues found with the EB mustang and this is the fix they use.

Boost entering the catch can doesn't mean a thing unless you have a rubbish catch can. Radium are designed to take the boost pressure. Thirty psi is no big deal pressure wise for a decent catch can to handle.

Ciao

 

[Pezzar]

Its the boost entering the catch can then sucking oil back out when hitting vacuum is the way ive understood it, even with mishi and radium cans.
The upr setup employs the clean side check valve as part of the kit.

 

[Si2RS]

Its the boost entering the catch can then sucking oil back out when hitting vacuum is the way ive understood it, even with mishi and radium cans.
The upr setup employs the clean side check valve as part of the kit.

How would it suck it out if the oil is collected on the bottom of the can, and the lines are at the top? I would think once oil passes into the catch can, it drips to the bottom. Unless you're not emptying the can out on a regular basis like you should be, I don't see how vacuum can be so strong that it sucks it out of the bottom.

 

[Pezzar]

the way it was explained to me made sense and another example is Pressurise an aircraft cabin then release the air out,
The clean side check valve is the fix the EB mustang owners are using and having lot of good results

 

[JamoRS]

How would it suck it out if the oil is collected on the bottom of the can, and the lines are at the top? I would think once oil passes into the catch can, it drips to the bottom. Unless you're not emptying the can out on a regular basis like you should be, I don't see how vacuum can be so strong that it sucks it out of the bottom.

This makes more sense to me....

 

[Pezzar]

Really?
Missing the point then because what collects in the can during engine cycling is vapour not liquid, liquid doesn’t form til it condenses, when engine shuts down and cools off.
At the end of the day believe what you like but easy to understand when you apply a little science.
Its not the sudden vacuum as one person focused on its the built up pressure suddenly needing somewhere to go in a hurry that drags vapour back into the intake. Its well documented by tuneplus and upr and others

 

[JamoRS]

From the Radium site....


Do I need to install a check valve to keep boost out of the catch can?
No. Radium Engineering catch cans are designed to withstand boost pressure and thus can be plumbed directly to the intake manifold without the need for a check valve.

Blog Post Catch Cans 101

 

[Pezzar]

This is already proven to be not the case, with both mishi cans and radium, check the mustang forum it’s rife there, as i said believe what you like makes no difference to me at all.
Just documenting what I found and my issues!

 

[JamoRS]

I'm not saying your wrong and I'm right!
Just bringing the facts to the table on this discussion..jesus....

 

[Pezzar]

Just documenting jesus
Works both ways

 

[lucky phil]

Its the boost entering the catch can then sucking oil back out when hitting vacuum is the way ive understood it, even with mishi and radium cans.
The upr setup employs the clean side check valve as part of the kit.

Nope thats not an issue. Under off boost there is flow from the crankcase breather plate through the PCV valve and then the catch can and into the inlet manifold. When Boost pressure goes positive the PCV valve shuts and there is no flow through the catch can but there is boost pressure. When the boost pressure drops off the pcv valve opens again and intake manifold vacuum once again re establishes and the flow returns. The can is designed to not syphon, that's how a well designed catch can works.

Ciao

 

[lucky phil]

Really?
Missing the point then because what collects in the can during engine cycling is vapour not liquid, liquid doesn’t form til it condenses, when engine shuts down and cools off.
At the end of the day believe what you like but easy to understand when you apply a little science.
Its not the sudden vacuum as one person focused on its the built up pressure suddenly needing somewhere to go in a hurry that drags vapour back into the intake. Its well documented by tuneplus and upr and others

The whole idea of a catch can with a oil separator is just that, as air with oil suspended in it flows into the can the separator separates the oil out and it collects in the can. It's a principle that's as old as the ICE itself. It's got nothing to do with shutting the engine down and cooling off.

Ciao

 

[Pezzar]

The upr check valve is a well documented fix for all catch can systems.
The key here is that vapour flows through the system and not liquid as i said in just documenting what I found but people love to flame dont they

 

[Pezzar]

Nope thats not an issue. Under off boost there is flow from the crankcase breather plate through the PCV valve and then the catch can and into the inlet manifold. When Boost pressure goes positive the PCV valve shuts and there is no flow through the catch can but there is boost pressure. When the boost pressure drops off the pcv valve opens again and intake manifold vacuum once again re establishes and the flow returns. The can is designed to not syphon, that's how a well designed catch can works.

Ciao

Boost enters and builds in the inlet tract as it supposed too, without a clean side check valve it flows into the can, when the pressure in the tract drops the pressure in the can will naturally flow back to the inlet taking vapour with it.
Seems reasonable to me and the check valve alleviates this.
As I said well documented on the EB mustang forum and fix detailed there too