Can I use Evap port for PCV?
Can I use Evap port for PCV? I am running a LS6 intake on a 5.3 in a custom application. I am routing some vacuum lines. Can I do the following?
1 - I don't have the nipple on the trottle body because it is off the truck - so can I run a line from the tube on the passenger valve cover to the nipple on the intake behind the trottle body on the passenger side?
2 - Can I run the truck PCV valve in the stock hole at rear of driver side valve cover and run a line to the nipple on the the driver side intake behind TB - it is the evap port which i am not using for evap?
Thanks for you help.
1 - I don't have the nipple on the trottle body because it is off the truck - so can I run a line from the tube on the passenger valve cover to the nipple on the intake behind the trottle body on the passenger side?
2 - Can I run the truck PCV valve in the stock hole at rear of driver side valve cover and run a line to the nipple on the the driver side intake behind TB - it is the evap port which i am not using for evap?
Thanks for you help.
The way you describe would have vacuum from the intake pulling on both valve covers - no way for fresh air to get in.
The passenger valve cover front port should connect to a metered air source - meaning somewhere between the MAF and the TB. So it is usually connected to the port on the top/side of the TB, there is no vacuum there.
The drivers side valve cover rear port should have a vacuum hose running up to port #3 on the intake, with a PCV valve installed right before the manifold. It's also a good idea to run a catch can on this side as well.
Here's some good reading, check out the first link:
https://ls1tech.com/forums/11987562-post15.html
The passenger valve cover front port should connect to a metered air source - meaning somewhere between the MAF and the TB. So it is usually connected to the port on the top/side of the TB, there is no vacuum there.
The drivers side valve cover rear port should have a vacuum hose running up to port #3 on the intake, with a PCV valve installed right before the manifold. It's also a good idea to run a catch can on this side as well.
Here's some good reading, check out the first link:
https://ls1tech.com/forums/11987562-post15.html
You need to tap somewhere between the MAF and the TB for the fresh air input. This thread has a nice pic showing the hose right before the DBW TB, post #6:
http://forums.corvetteforum.com/c6-t...post1561330979
http://forums.corvetteforum.com/c6-t...post1561330979
