agp valve breather w/checkvalve??

[srt4nathan]

i currently have a PTP checkvalve on my car and i am running the drivers side valve cover to a breather, but im wanting to replace the breather with the AGP breather kit cuz mine makes a mess...this will work correctly right?? jut wanna make sure since i have a checkvalve

[kritical]

works fine, check valve goes from the pcv line to the throttle body. The AGP valve breather goes on the nipple on the driver side of the valve cover.

[srt4nathan]

Quote: Originally Posted by kritical

works fine, check valve goes on the pcv line not the breather side.

thx

[SeniorT2005]

The only problem I see is it is not connected to the air intake. It is just a breather, which does not pull out crankcase pressure like connecting it to the intake. My opinion on the matter is run a 2nd catch can for the valve cover breather to the air intake. Or just hook it up like stock. There is a line there stock for a reason. While the car is in boost the PCV is closed and the motor has the breather connected to the intake so it can still pull the crankcase pressure out.

[CarsAddict]

The only problem I see is it is not connected to the air intake.

[srt4nathan]

Quote: Originally Posted by SeniorT2005

The only problem I see is it is not connected to the air intake. It is just a breather, which does not pull out crankcase pressure like connecting it to the intake. My opinion on the matter is run a 2nd catch can for the valve cover breather to the air intake. Or just hook it up like stock. There is a line there stock for a reason. While the car is in boost the PCV is closed and the motor has the breather connected to the intake so it can still pull the crankcase pressure out.

so your saying to just run a line from the valve cover to a second cathcan then from the catchcan to the intake??? ive heard people do that but i dont know why. everyone i know runs the AGP breather,and i currently run a brether but not an AGP one and it runs great. what are the benefits to runnning it to the intake, cuz i know what it does but i dont see why to do that instead of just running the AGP breather

[SeniorT2005]

Quote: Originally Posted by srt4nathan

so your saying to just run a line from the valve cover to a second cathcan then from the catchcan to the intake??? ive heard people do that but i dont know why. everyone i know runs the AGP breather,and i currently run a brether but not an AGP one and it runs great. what are the benefits to runnning it to the intake, cuz i know what it does but i dont see why to do that instead of just running the AGP breather

To understand why first you need to know how the PCV system works:
While in boost your PCV will seal not letting and boost pressure enter the crankcase. This is why they integrated the breather into the valvecover. So the carnkcase can be vented and release all of the excess pressure(blowby). Now, the best way to keep the crankcase from having pressure is to pull it out. i.e. vacuum. So in essence by just venting the crankcase it will work, but for the system to work at peak performance you need to have the vacuum from the intake pulling the crankcase pressure out. I believe if you seach the threads a little you will fing a long heated discussion on how our motor run best with the crankcase under vaccum. IMO i like keeping the crankcase under vacuum so I have two catchcans setup.

[SeniorT2005]

Quote: Originally Posted by CarsAddict

The only problem I see is it is not connected to the air intake.

What is this all about??????

[SRT4chris2005]

Ill try to get a picture of my setup later tonight.

I have a BlueStreak catch can ran in line with my PCV.

Then I have a greddy catch can in line with my intake and VC. I have a 4" AGP intake, so I had to have a nipple welded to the intake for this to work.

[srt4nathan]

Quote: Originally Posted by SeniorT2005

To understand why first you need to know how the PCV system works:
While in boost your PCV will seal not letting and boost pressure enter the crankcase. This is why they integrated the breather into the valvecover. So the carnkcase can be vented and release all of the excess pressure(blowby). Now, the best way to keep the crankcase from having pressure is to pull it out. i.e. vacuum. So in essence by just venting the crankcase it will work, but for the system to work at peak performance you need to have the vacuum from the intake pulling the crankcase pressure out. I believe if you seach the threads a little you will fing a long heated discussion on how our motor run best with the crankcase under vaccum. IMO i like keeping the crankcase under vacuum so I have two catchcans setup.

so i just run a line from the valve cover to a second cathcan then from the catchcan to the intake right??

[SeniorT2005]

Quote: Originally Posted by srt4nathan

so i just run a line from the valve cover to a second cathcan then from the catchcan to the intake right??

Thats the way I have mine setup.

[srt4nathan]

Quote: Originally Posted by SeniorT2005

Thats the way I have mine setup.

i have an agp catchan now is there a fit a 2nd?? or no since the design..what are some cathcans that will work for the sencond catchcan

[SRT4chris2005]

Heres mine.

[nutz]

you guys want the sad truth, unless your air filter is super restrictive just plumbing into the intake (intake tube) to get vacuum is absolutly worthless. guys who do this on the dyno will attest, the crankcase blows by way more than even a super restrictive (and power robbing) intake ever could. bottom line it dosnt work, and they do it on stock cars because venting crankcase pressure to the atmosphere is not allower by law, emmisions!
next time your on the dyno boosting see how little vacuum is generated from the intake tube (its tiny) if its allot change your air filter


so the bottom line is if you run it into the intake tube you will never see vacuum under boost in the crankcase (without a pump) and it can and will hurt your performance by venting oil vapor (yes even with a catch can) in to the combustion chamber, they can and will cause mucho knock

I know a great vendor posted up a thread about this BUT.....every car I have ever seen on the dyno makes me question this HARD and say no


the best bet is to get a good oil overflow can with NO filter (vented to the atmosphere) so the crankcase can easily bleed presure

[srt4nathan]

^^^^^^ interesting so you disagree with the 2 catchcan method?? this is what im looking for pros and cons...continue the debate!!!