What's the easiest way to avoid pressure in the crank case?
Thread Starter
0.5 BAR
Joined: Jul 2005
Posts: 134
What's the easiest way to avoid pressure in the crank case?
Building my kit and forgot about pressure in crankcase while in boost. What's the easiest way to avoid this, a homemadeturbo way while still being realiable and gets the job done.
1.5 BAR
Joined: Nov 2004
Posts: 820
Re: What's the easiest way to avoid pressure in the crank case?
theres diagrams all over this site of how you "should" run a catch can and a pre turbo intake so you can still have vaccum to the crankcase all the time, in my opinion you dont have to do that, i run my turbo b16 with a breather on the valve cover and the port on the intake mani. for the pcv capped off then i run a hose from the breather box and send it straight down toward the ground and thats it, works fine for me.....
1.0 BAR
Joined: Apr 2004
Posts: 240
Re: What's the easiest way to avoid pressure in the crank case?
Originally Posted by Ravage70
a healthy pvc hooked up the stock way works fine
or am i mis'reading' you?
1.0 BAR
Joined: Nov 2004
Posts: 319
Re: What's the easiest way to avoid pressure in the crank case?
Originally Posted by Ravage70
i ran my car all summer long like this and had no problems
now im na and still have great compression
hey its not the smart way, its the lazy way
now im na and still have great compression
hey its not the smart way, its the lazy way
0.0 BAR
Joined: Nov 2003
Posts: 0
Re: What's the easiest way to avoid pressure in the crank case?
Originally Posted by topspeed
Originally Posted by Ravage70
i ran my car all summer long like this and had no problems
now im na and still have great compression
hey its not the smart way, its the lazy way
now im na and still have great compression
hey its not the smart way, its the lazy way
your an idiot running a pcv valve on a healty engine doesn't hurt ---- as long as you have a valve cover breather so it can vent anything the pcv vavle might leak.
3.0 BAR
Joined: Apr 2003
Posts: 11,056
Re: What's the easiest way to avoid pressure in the crank case?
actually NO you're all idiots 
, if you leave the stock pcv hooked up, it closes immediately as soon as the car see's 1psi of boost, therefore trapping ALL crank case pressure in the crank case. all a breather filter does is let the pressure out of the head once it's ALREADY BLOWN BY your rings 
the EASIEST way to avoid crank case pressure in boost is to totally unhook the pcv valve completely, the BEST way to avoid crank case pressure is to eliminate the pcv valve itself, but in it's place put a straight through hose going to a a source of constant vacuum, such as a slash cut in your exhaust or preturbo pipe. i know tons of people with very high hp that just take the pcv out and don't run anything and it works good enough.
, if you leave the stock pcv hooked up, it closes immediately as soon as the car see's 1psi of boost, therefore trapping ALL crank case pressure in the crank case. all a breather filter does is let the pressure out of the head once it's ALREADY BLOWN BY your rings the EASIEST way to avoid crank case pressure in boost is to totally unhook the pcv valve completely, the BEST way to avoid crank case pressure is to eliminate the pcv valve itself, but in it's place put a straight through hose going to a a source of constant vacuum, such as a slash cut in your exhaust or preturbo pipe. i know tons of people with very high hp that just take the pcv out and don't run anything and it works good enough.
Thread Starter
0.5 BAR
Joined: Jul 2005
Posts: 134
Re: What's the easiest way to avoid pressure in the crank case?
Okay getting confused now, I thought the crank case vent is just a tube leading from the crank case to the manifold. What's this PCV thing? What's this that connects to the head, I don't see how the head has to do with crank case pressure.. Help a noob out=), I don't want pressure blowing oil back into my turbo. I'm just looking for the easiest way that works "good enough".
