Can there be such an excessive amount of turbo back pressure that it leads to a rise in crankcase pressure?

 

make sure there are no lines that go from pressuriezed part of intake to valve cover. and if they do make sure there is a one way check valve on it.

but sounds llike you gfound the fuel pressure problem. nice nice find on that one!

 

Really it comes down to boost level/cylinder pressure and bypass.

 

yeah vent BOTH of the valve cover vents to the atmosphere. i see people leave the line going to the pcv valve, that will keep the pcv valve closed under boost and that only leaves the one breather nipple open on the VC to vent crankcase pressure.

 

Yep, get rid of the pcv and cap the manifold and have both ports go to a good open to atmosphere catch can. You can also get a really cool Vibrant, I think thats who makes it, oil cap that has a vent port for like $30 to add to the venting. I'm thinking of getting one so I have 3 open to atmosphere vents. I dont want to have to drill hole in the valve cover.

This is it.

http://www.amazon.com/Aluminum-Vacuum-Scav...a/dp/B002TRTP8K

 

I've vented my vc for the last year, no issues whatsoever.

Btw, I am selling an AP2 valvecover alreaded welded for 2 -10AN

 

jeremy.. i might pick that up from you

 

I'm using this.

Actually it's for sale, I'm going with 2, -12's.

 

how much, ill take it? what color?

 

I still have the line that goes to the pcv attached, if i now vent it will it effect my tune or anything?