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CFM Performance Valve Cover Breather
- Thread starter Chris@CFM
- Start date
Thread Starter
#43
[MENTION=382]airjor13[/MENTION] its meant to be a very simple yet super effective method of venting positive crankcase pressure, especially on boosted applications.
Here's a link detailing the negative effects of crankcase pressure.
http://www.shophemi.com/images/media/p-2273-arrington_ccv_bible.pdf
The factory PCV valve flows one way, to prevent boost from entering the crankcase. This means that under boost the excess pressure will work it's way out through the clean side pcv (thus entering the intake) or a seal (CTSV's are notorious for leaky rear mains).
Our breather simply replaces the oil cap (10 second installation!! lol) and facilitates venting ONLY under boost via the one way valve. Under vacuum (which is when the PCV kicks in) the ball seals preventing unmetered air from entering as well as allowing 100% function of the factory pcv. This is why we recommend running a closed system oil separator (Such as the Mishimoto) on the PCV/ "Dirty" side. The breather and catch can both work under 2 different conditions, venting excess pressure at boost, and drawing out crankcase contaminants under vacuum.
Let me know if you have any other questions!
Here's a link detailing the negative effects of crankcase pressure.
http://www.shophemi.com/images/media/p-2273-arrington_ccv_bible.pdf
The factory PCV valve flows one way, to prevent boost from entering the crankcase. This means that under boost the excess pressure will work it's way out through the clean side pcv (thus entering the intake) or a seal (CTSV's are notorious for leaky rear mains).
Our breather simply replaces the oil cap (10 second installation!! lol) and facilitates venting ONLY under boost via the one way valve. Under vacuum (which is when the PCV kicks in) the ball seals preventing unmetered air from entering as well as allowing 100% function of the factory pcv. This is why we recommend running a closed system oil separator (Such as the Mishimoto) on the PCV/ "Dirty" side. The breather and catch can both work under 2 different conditions, venting excess pressure at boost, and drawing out crankcase contaminants under vacuum.
Let me know if you have any other questions!
Thread Starter
#49
Looks awesome thanks for the pics!
You're welcome! Thanks for the order let me know if you need anything else.
The only silly questions are the one you don't ask
. We are indeed in Central Florida, Longwood to be exact. While we do not have a showroom, we do have a pickup area for local customers. You can come in and order, or save time by ordering online and opting for local pickup. We'll let you know when it's available to pickup.
Let me know what you need and i can check stock or order in as needed!
You're welcome! Thanks for the order let me know if you need anything else.
The only silly questions are the one you don't ask
. We are indeed in Central Florida, Longwood to be exact. While we do not have a showroom, we do have a pickup area for local customers. You can come in and order, or save time by ordering online and opting for local pickup. We'll let you know when it's available to pickup. Let me know what you need and i can check stock or order in as needed!
Thread Starter
#50
Looks awesome thanks for the pics!
You're welcome! Thanks for the order let me know if you need anything else.
The only silly questions are the one you don't ask. We are indeed in Central Florida, Longwood to be exact. While we do not have a showroom, we do have a pickup area for local customers. You can come in and order, or save time by ordering online and opting for local pickup. We'll let you know when it's available to pickup.
Let me know what you need and i can check stock or order in as needed!
You're welcome! Thanks for the order let me know if you need anything else.
The only silly questions are the one you don't ask
. We are indeed in Central Florida, Longwood to be exact. While we do not have a showroom, we do have a pickup area for local customers. You can come in and order, or save time by ordering online and opting for local pickup. We'll let you know when it's available to pickup. Let me know what you need and i can check stock or order in as needed!
![[coolsmile]](/images/smilies/cool.png "Cool Smile [coolsmile]")
Thread Starter
#53
Save 15% off on all CFM Performance valve cover breathers this 4th of July!
Sale ends Monday July 4th at midnight.
www.valvecoverbreathers.com
Sale ends Monday July 4th at midnight.
www.valvecoverbreathers.com
Wanted to provide feedback to my experience with [MENTION=2221]Chris@CFM[/MENTION]. My breather cap was off the car for a while so the o-ring was shrunken and a little rough. I emailed Chris and he got me the specs for the size and material of the o-ring. After checking a bunch of places locally I couldn't find one so Chris offered to send me a replacement. Got it a few days later and it worked great! There was a noticeable difference in size between the old and new. Great customer service from CFM and the breather is GREAT.
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